The elucidation of the folding mechanism of a protein is an insoluble problem, because it requires the complete description of the nascent (unfolded) and final (native) states, together with all intermediates along the U → N transition. plate mold construction, core grinding instructions, and core and mold machining dimensions are included in the Collapsible Core and Collapsible Mini-Core Design & Assembly * *To determine maximum dimension of moldable undercut, reduce the amount of collapse per side shown in the table above by . Made of seven steel wires braided to create one sturdy, non-sagging clothesline, this clothesline is durable. Dove Tail collapsing cores also eliminate unscrewing mechanisms and slides, and allow for. MiniCores® utilize unique technology for molding plastic parts with threads or details normally requiring complex unscrewing or side action mechanisms. Collapsible soils have caused infrastructural damages resulting in several economic losses and loss of lives in certain cases. Dimerization of cLD monomers across a large interface creates a shared central groove formed by -helices thataugtarlion Aluminum Telescoping Extension Ladder 12. Collapsible Core Inch mm Inch mm Inch mm Inch mm Inch mm Inch mm Inch mm CC-125-PC. The complex mechanism of protein folding in cells has intrigued the scientific community for decades. The girder. Collapsible core for concrete construction Download PDF Info. 2. ) Expired - Lifetime Application number US293901A InventorFigure 1: Schematic illustration of the mechanism of collapse settlement. Collapsible Core – DT Series; About; Legal notice; Message business; Parc industriel la Prairie Alex - 01100 OYONNAX. Furthermore, it was shown that the stress-strain curves of the folding core and L-crush test are qualitatively comparable with each other. COLLAPSIBLE CORES. In This Tutorials We'll Discuss Collapsible Core and it calculations. 0003 of clearance in the dovetail, about 0. The character and structure of loess determine its complex collapsibility (i. The side chain of Trp421 points into hydrophobic/aromatic core of the enzyme and accepts a hydrogen bond from the nearby γ-oxygen of Tyr280. 4, H and I) (14, 15, 21, 49). Two of the most common methods for dealing with threaded parts are by jumping threads or installing unscrewing mechanisms. The kinetic folding mechanism of [2-66]2 TR suggests that: (1) the complexity of the folding kinetics of full-length WT TR arises from alternative interactions of the DNA reading heads with the dimerization core domain-not from the intertwined nature of the dimerization interface; (2) residues 2-66 contain all of the sequence information. . It sounds and looks a lot like a magic trick. During the last six decades, many researchers have focused on studying the collapse mechanism of various collapsible soils upon wetting. The patented design incorporates only three moving parts, which utilize conventional mold movements. In some aspects the core device includes a rotatable shaft, moveable outer wall components positioned radially from the shaft, a first disk operatively. Radius “R” is most important. Collapsible Core Injection Molding molds from design, making, testing, producing, collapsible core mechanism, dovetail collapsible core, collapsibility of core ahmedsami92 A In U. Then, use JavaScript to slide down the content by setting a calculated max-height, depending on the panel's height on different screen sizes: Example. The Collapsible Core is a major breakthrough for molding plastic parts requiring internal threads, undercuts, protrusions or cut-outs. A multi-sectioned core is provided that is easily assembled. Buckled multi-layers. finally recommended collapsible cores structure after deliberately analysis. Animations;. View all. MENU MENU Alibaba. 26S and 30S Proteasomes. However, a consensus on the core mechanism by which GroEL-ES stimulates protein folding is lacking. Manufacturing of the skeleton like internal core structure and variable thickness flat composite skin. We only make money if you purchase a product through our affiliate links. One result of urbanization in arid. Upmold is an integrated Injection molding molds manufacturer with design, production and sales. Here, we study pressure-drop. 6 out of 5 stars 462. 800 20. 26(9), 2541. Distribution Naturally occurring collapsible soils in New Zealand. The term hinge line has also been used for this feature. More options more capabilities. Customer-Oriented & Quality -Adherence June 20, 2019 1 Part size:1. The mechanism shown is the lower lock mechanism mounted near the lower end of the core. Listed below are just a few of the industries that we serve. 3. You have a dedicated contact person, 100% reachable, 100% involved. Unscrewing molds can be a bear to operate. e. 501,537, filed con currently herewith. com. There are many industries for. 3. DDT High quality low price harded collapsible cores: Item no: DDT: Application Fields: 1. The thread depth is about 0. See collapsible core structure on page 8Molecular dynamics (MD) simulations allow us to examine folding mechanisms in atomistic detail (), particularly now that simulation techniques have advanced to sample the millisecond time scale (38–41). Design approach: 1. 020 per inch of part height requiring. The door is a moving mechanism which is more like a barrier made of wood, stone, metal, glass, paper, leaves, hides, or a combination of materials. 5 shows that it serves as an anchor for many interactions between RET in the TM domain and the tertiary structure in the EC. Best Over-the-Sink Colander: Qimh Collapsible Over the Sink Colander. to improvements in expansible and collapsible-core spool mechanisms of the general kind disclosed and claimed in my copending application, Serial No. 99 $ 105. For “R min” and “R max” see Collapsible Core dimension drawing. Delivery country. Mechanism. 4 is sinilar to Fig. 1. In its active, phosphorylated state, Myo-II oligomerizes into a bipolar mini-filament that can bind to multiple actin filaments and ‘walk’ along them in an ATP-dependent manner (Figure 1 C) 20, 21, 22. The misfolding and aggregation into amyloid fibrils of the prion protein (PrP) have been strongly linked with a group of neurodegenerative disorders that include the mad cow disease. 605 142. The autophagy core mechanism is necessary, but Nvj1p and Vac8p are optional in this process. 620 15. The term origami refers to the commonly known ancient art of paper folding. Uploaded: March 12th, 2021. The Q-cycle mechanism of the bc1 complex is now well enough understood to allow application of advanced computational approaches to the study of atomistic processes. Dove Tail Collapsible Cores Enable Application Design Flexibility • All standard DT Series Collapsible Cores offer 360 degree molding of threads or other undercut featuresAug 3, 2020 - Collapsible Core Injection Molding molds from design, making, testing, producing, collapsible core mechanism, dovetail collapsible core, collapsibility of core. The two corner members are diagonally opposite each other and are retractable in two parallel approximately diagonal planes by cam followers actuated by cams on a pair of longitudinally slidable actuating strips. Collapsible core structure is more simple than the old unscrew thread mechanism, its installation is very easy. Their fundamental findings reveal mechanisms that operate in normal physiologic. Volcanism, metamorphism, earthquakes, crustal warping, folding, and faulting are the major types of endogenic processes. For conventional threaded parts, the Collapsible Core could cut your cycle time up to 30% when compared with unscrewing or other complex actuating mechanisms. For 10 proteins with different architectures, we show that the predicted folding cores from this flexibility/stability analysis are in good agreement with. The first assembly carries a cone (14), the second assembly carries an inner set of segments (116) which form part of the core surface and engage the cone (14) and the third assembly (210) carries outer segments (216) moved. No. a glycosyl donor, is attached to a hydroxyl or other functional group of another molecule (a glycosyl acceptor) in order to form a glycoconjugate. Collapsible core Download PDF Info Publication number US1666689A. A collapsible core device for molding articles around the core device in a mold cavity includes a first sleeve, a second sleeve and an expansion member. Protein folding is often considered the flux controlling process in protein synthesis and secretion. View all. Rather than use a side-action cam, an insert is machined so the undercut can be applied and is bolted into the mold where a pocket matches the insert dimensions. View Large Image Figure Viewer; Download Hi-res image. If this isn’t an option, unscrewing mechanisms. This may alter folding and account for the reduced expression of the mutant enzyme. 2 is a side elevation of the core. The second type of collapsible core is more mechanical in nature and is called the dove tail collapsible core. tubular well articles, comprising an annular shell (1) which substantially forms a pipe having a longitudinal axis extending between the ends of the pipe, said shell (1) being flexurally flexible about the longitudinal axis of the pipe. Collapsible core design & mechanism, collapsible core manufacturing. bbabio. Pinned joints add no freedom, a free joint adds 2 degrees of freedom, and a rod removes 1 degree of freedom if it is not redundant (Graver 2001, p. Figure 4. Several mechanisms can be involved during buckling. 2. Referring now to FIGS. To this end we designed a. ) Expired - Lifetime Application number US747913A Inventor Otto J Kuhlke“F max” see Table or Collapsible Core dimensions leaflet. Understanding Mold Side Action: A Practical GuideOur representative mixed α/β protein is chymotrypsin inhibitor 2 (CI2). Download PDF Info Publication number US997027A. Collapsible core design, collapsilbe core mechanism, collapsible core manufacturing, collaspbile core injection molding, unscrewing molding. Under normal conditions, the hydrophobic patches of the protein will be buried internally during folding. - Google Patents Collapsible core. Here, two previously isolated Saccharomyces cerevisiae strains with increased α-amylase productivity were analyzed in chemostat cultures at different dilution rates using multi-omics data. In a study by Lam et al. The jacket is designed in two halves to facilitate ease of transportation to the pipe production site. At present, the receptor for nucleophagy. Google has not performed a legal analysis and. 3. 135). These deployable joints can be manufactured from a single sheet of material. Jaimee Itagaki. EPR spectroscopy has been used to identify residues involved in the cross-β core of amyloid. GCI designs and manufacturers jacking pipe molds of any size as per your requirement. P. grabcad. Home. As shown in Fig. Natl. First, the earwig wing employs a pattern. Ecol. The collapsible core includes a center core pin and a core sleeve about the core pin and with the core pin having a small plurality of alternating, uniform, narrow, non-collapsing segments secured to the center pin and the. A greaterdraft is desirable when “B” is near “B max” (ex. One advantage to using these components is that the unscrewing of a threaded part starts simultaneously with the opening of the mold - resulting in cycle time reductions. The reduction in the projected cross sectional area of the core can only be carried out if it is sectioned in a particular fashion. BEST NARROW PICK: Hampden Furnishings 18″x60″ Heavy Duty. An Injection molding assembly made in. √ First eject and then release the elasticity from the bottom, standardizing the problem of inverted ejection of small. A side core mechanism design is used as an example to illustrate the proposed method and its. COLLAPSIBLE CORE. Choose Options. Software: Solid Edge, Categories: Tags: 1 Likes. Mold Considerations. This means you get more internal locking space than a standard size u-lock. Collapsible Core Molds. Line guide mechanism for a fishing line transfer assembly and kit: August, 2008: Touchstone. January 25th, 2021. Dec 5, 2019 - Collapsible Core Injection Molding molds from design, making, testing, producing, collapsible core mechanism, dovetail collapsible core, collapsibility of core. present different folding mechanisms despite their similar structure. This mechanism can be hydraulic, mechanical, pneumatic, or a combination. . Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed. This is the three head collapsible core for electronic industry. The discussions on this topic are summarized under three categories, i. Nucleosome core particle: ribbon traces for the 146-bp DNA. We would like to show you a description here but the site won’t allow us. View Files. Our solution to demould undercuts and threads are time and cost saving collapsible cores. In a point mutant that introduces a potentially charged residue into this core, I53D, the intermediate is no longer detected, and the protein folds with an apparently two-state mechanism. For wet cast molds, we have developed a collapsible core mechanism to assist in product removal from the forms. The core comprises three relatively movable assemblies (10,110 and 120). 04 74 73 00 33 – Fax 04 74 73 61 11. 6 Mechanical Fastenings with Self-Tapping Screws Figure 2 Mechanical Fastenings with Bolts, Nuts, and Washers Incorrect Incorrect Incorrect Correct Correct Correct Use Standoffs Use Washers Mechanical Fastenings 1/32 in (0. Detachment folding occurs as strain imposed on a mechanically weak layer or incompetent unit, such as shale or salt, or at the boundary between an incompetent and more competent unit, induces resistance from the units resulting in folding typically observed in the competent unit. 020 per inch of part height requiring collapse. Pyrrolidine derivatives as oxytocin/vasopressin via receptors antagonists. 720 18. For wet cast molds, we have developed a collapsible core mechanism to assist in product removal from the forms. The Foldylock Classic is a medium sized folding bike lock, measuring 37” (95 cm) long, with hardened steel plates that are 22 mm wide and 4. Watching Frank Howarth and his son build that model of the bi-level vertical-lift bridge, I got to wondering about different movable bridge designs. Intertech designs and makes our own collapsible. Touch device users, explore by touch. Today. The jacket is designed in two halves to facilitate ease of transportation to the pipe production site. e. . Europe PMC. The mechanism of the chemical folding of holo-cytc has been studied extensively by using hydrogen exchange techniques. The molded part is required to be held centered during ejection, as the collapsible core is collapsed. Scientific Reports (2016) Cortical folding, characterized by convex gyri and concave sulci, has an intrinsic relationship to the brain’s functional organization. It finds its roots in the composition of the Japanese words oru, which means “fold,” and kami, which means. The collapse potential, mineralogy, microstructure, and particle morphology of a loess from the Loess Plateau, China, were characterized by double oedometer testing, X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectroscopy, and image analysis to elucidate the origin of its collapse behavior. 800 20. Description. MISUMI • Product Type: Slim type • Guide Rail Type: Combined type • Includes Retracting Mechanism • Dimension ST (Stroke amount) (mm): 6 • W Dimension (Angular cam width) (mm): 20. Medical equipment 5. The two tryptophan residues in apomyoglobin (Trp-7 and Trp-14) are located on the A helix in the native structure and are in close contact with the E and H and E and G helices, respectively. Regardless of the method of production, GCI is specialized in developing and manufacturing pipe formwork. Pins lock in place until you push the button to release the spring-loaded retaining balls. core tire section segments collapsible Prior art date 1926-08-19 Legal status (The legal status is an assumption and is not a legal conclusion. )A collapsible core for casting e. 4 is a sectional view taken on the line 4--4 of FIG. Collapsible core structure is more simple than the old unscrew thread mechanism, its installation is very easy. An unscrewing tool has a rack mechanism that cycles between six seconds for a single thread to 30 seconds for eight threads, whereas a collapsible core mold cycles similar to a stripper mold by opening and closing two to three seconds to eject the part. Sign in | Create an account. Pinterest. The core competencies are sets of intellectual, personal, and social and emotional proficiencies that all students need to develop in order to engage in deep learning and. It sounds and looks a lot like a magic trick. 4,286,766 a collapsible mold core is disclosed having an inner core member of the shape of a conical section, surrounded by eight sliding members which fit around the conical core and slide in longitudinal manner along the core between the collapsed and molding positions to first permit the molding of a bucket and then to permit its removal as the core moves between its. 99. Collapsible core design, collapsilbe core mechanism, collapsible core manufacturing, collaspbile core injection molding, unscrewing molding. Toys. J. Int. The DT Series Collapsible Cores offer a more compact design and simplified mold approach Collapsible cores - DT Series DTIt can be seen from Fig. US20060188601A1 - Collapsible core using two sleeves and is spring loaded - Google Patents Collapsible core using two. Fig. Conventional stopped-flow and quench-flow hydrogen exchange experiments on refolding of apomyoglobin at 5°C revealed formation of a helical intermediate within the 6-ms dead time of the instrument (11, 12). d) Undercuts on the face of the pin must not interfere with1. Among the traditional approaches, collapsibility. Fitness Reality 1000 Super Max Weight Bench is 35% off at Amazon. asm. Download PDF Info Publication number US530108A. The demoulding speed is faster than old method, it can raise the production efficiency greatly. This paper discusses the. The Foldylock Classic gives you more locking space than a standard size u-lock. The first core pulling principle is driven by an inclined T-slot. This is so as not to hang the part up on one side of the core. Abstract. As the. What is the mechanism behind the movement of Earth's tectonic plates? intense heat in the asthenosphere that generates convection intense heat in the lithosphere that generates convection The oceans extend deep into the lithosphere, which allows for the drifting movement of the overlying crust. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed. Per customer's need, Intertech can design and make very good collapsible core molding design in mold and in molding operation. Aluminum. Until I watched this video. 1S Stowable Bench is 40% off at Amazon. The first assembly carries a cone (14), the second assembly carries an inner set of fingers (116) which form part of the core surface and engage the cone and the third assembly (210) carries outer fingers (216) moved by inclined pins (118) on the second assembly. ) Expired - Lifetime Application number US625487A Inventor Harold A DenmireWe claim: 1. You can buy them here:. Details. The proposed eagle-inspired manipulator with adaptive grasping and collapsible mechanism and modular DOF has the potential to revolutionize the. The UPR orchestates the enforcement of adaptive mechanisms to maintain an optimal rate of protein production and rapidly reacts to diverse stimuli, including extracellular responses to hormones. This website uses tracking mechanisms by means of technically unnecessary cookies to offer its services, to constantly improve them and to. Recoiler mechanism including a core plate having a main body and complementary peripheral portions integral with the body and forming with the body, a surface about which material may be coiled, the portions terminating in adjacent free ends, and provisions intermediate the free ends to effect initial expansion and subsequent collapsing of at. Cores eliminate the need for complex unscrewing mechanisms as well as providing solutions to release internal undercut features such as O-ring grooves, slots and snap fit details. Use these telescoping poles with tarps, drop cloths, and plastic sheeting up to 8 mils thick to create a sturdy, temporary wall and control dust and debris. Dehydration upon folding can be characterized directly by all-atom simulations of fast pressure drops, which create desolvated pockets inside the nascent hydrophobic core. Definitions. txt) or view presentation slides online. As with all mechanism with moving parts, venting must be away from the core. The mechanisms of folding for larger proteins (greater than 100 amino acids) appear to proceed through intermediates, suggesting that different domains of the protein can fold independently. Available in four standard sizes and in customized sizes, the DT Collapsible Core Series eliminates the need for unscrewing mechanisms. ) Expired - Lifetime Application number EP96934445AThe trimerization core is located in the N-terminal part. The patented design incorporates only three. For Our Paid Online and offline Training and Industrial Design ServicesContact +91 848. In geology, a deformation mechanism is a process occurring at a microscopic scale that is responsible for changes in a material's internal structure, shape and volume. Available in four original standard sizes and in customized sizes, the DT Collapsible Core Series eliminates the need for unscrewing mechanisms. Jacking Pipe . Kind Code:. Download PDF Info Publication number US839818A. 5 stars: We think these are great walking sticks and trekking poles, but others are better. Unfortunately my Motion Simulator wouldn't move the springs with the simulation. Skip to the end of the images gallery . . Some pipe-fitting injection molds require a collapsible core. Upmold is an integrated Injection molding molds manufacturer with design, production and sales. 11 1 933 FRANK L. 8 mm from the top of the pin. Don't bog yourself down with traditional folding legs that only work for limited. 2 Pcs Folding Shelf Stainless Steel Bracket -10'' Heavy Duty Metal Collapsible Shelf Bracket for Triangle Table Bench, Wall Shelf Hinges Wall Mounted Shelves Space Saving DIY Bracket. 3. US1242092A - Collapsible core for concrete-molds. Dove Tail Collapsible Cores Enable Application Design FlexibilityA typical development process of deployable structures includes two main aspects: structural design and performance analysis. Best Squat Rack With Cables: Force USA X20 Pro Rack. List: $150. 8. First, the mold is prepared. . I partook in a personal project of redesigning the medicine bottle cap and its plastic injection mold. Risk Assess. The first. To collapse an outlining region, double-click any line in the region on the outlining margin, which appears just to the left of the code. Dry cast molds come with a carefully estimated number of external and/or internal vibrators. Wang, L. 0002 everywhere else. S. plate mold construction, core grinding instructions, and core and mold machining dimensions are included in the Collapsible Core and Collapsible Mini-Core Design & Assembly * *To determine maximum dimension of moldable undercut, reduce the amount of collapse per side shown in the table above by . When the expansion member is fitted within the first and second sleeves, the expansion member and the first and second sleeves form a substantially continuous,. Pat. Today. Thus, to follow a curve, a. Jan 25, 2019 - Discover (and save!) your own Pins on Pinterest. The folding of proteins after their synthesis is essential for the function of proteins in cells. Title: In 201. . A reusable core that is suitable for having paper or other sheet material wound thereon. The collapsible core offers some unique advantages to the traditional rotating core. 2. The action is inserted into the mold before injection, then unscrewed from the part after the material has set. ) Expired - Lifetime Application number US130209A Inventor George T Williams The Collapsible Core DT Series provides a more compact and simplified solution to molding challenging internal undercut features such as o-ring grooves, slots and snap-fit designs. The Collapsible Core is a major breakthrough for molding plastic parts requiring internal threads, undercuts, protrusions or cut-outs. Each core will be designed individually and according to the article. Mutations in the Knotted Core Predominantly Affect Late Folding Events and Dimerization. This is the three head collapsible core for electronic industry. Available in four original standard sizes and in customized sizes, the DT Collapsible Core Series eliminates the need for unscrewing mechanisms. 28K views. Full technical details, including basic stripper plate mold construction, core grinding instructions, and core and mold machining dimensions are included in the Collapsible Core and Collapsible Mini-Core Design & AssemblyOne area of current interest is membrane protein folding (4–6). Collapsible Core Injection Molding molds from design, making, testing, producing, collapsible core mechanism, dovetail collapsible core, collapsibility of core ahmedsami92 Agrooves, slots and snap-fit designs. The invention relates to a collapsible core for a mould. The core assembly comprises a segmented portion operably connected to an innercore pulling assembly whereby operation of the innercore pulling assembly first retracts the segmented core and thereafter pulls the complete core assembly out of the. Understanding the mechanism of. Kit Collapsible Core for PM43: Manufacturer Part Number: 203-971-001: Product Type: Printer Accessory Kit: The Following Are Compatible With Cisco Systems 203-971-001. Watch. Polymers 2022, 14, x FOR PEER REVIEW 2 of 20 core has been proposed, that is, the face sh eets and honeycomb core are composed of fiber-Principle of the first core pulling and design guiding mechanism. 1;Collapsible core technology is a method for removing internal undercuts in parts, and is used primarily in caps and closures, plumbing components, and the medical industry. Schenk et al. Basically, the customer can use double the number of cores with just one cylinder. 4 μM PagP folds into diC 12:0 PC liposomes, 100 nm in diameter, in the presence of high concentrations of urea (7–8. US1162961A US334515A US334515A US1162961A US 1162961 A US1162961 A US 1162961A US 334515 A US334515 A US 334515A US 334515 A US334515 A US 334515A US 1162961 A US1162961 A US 1162961A Authority US United States Prior art keywords shell slots. 0 mm at a The collapsible core mechanism re-quires absolute precision during grinding of the fits, guides and movement seats if the goals of extremely fast cycles and high mold lifetime are to be achieved. Best Mesh Strainer: Cuisinart Mesh Strainers. A collapsible core is provided to minimize undercut generation of product by controlling slope of collapsible core. The mechanism of collapsible core can help efficiently on many plastic parts which requires internal threads, undercuts, protrusions or cut-outs. The collapsible core of the invention has a moveable front panel joined to two moveable side panels, all of the panels being connected to hydraulically powered linkage arrangements that will pull the panels straight back from. Collapsible core. In low volumes, a hand-loaded core may be more cost effective. It is no longer necessary to design in a rack mechanism because there is no need for it because of the cost reduction coupled with a simpler mold design. the need for complex unscrewing mechanisms as well as providing solutions for unmoldable internal undercut features such as o-ring grooves, slots, and snap fit details. The concept of the collapsible core is to first collapse the core to a small enough size to. , the sudden decrease in soil. Collapsible Core Molds. J. 027 . g. The Collapsible Cores automatic operation makes it possible for you to produce parts that, previously, had been. January 25th, 2021. . core sections section collapsible key section Prior art date 1924-11-05 Legal status (The legal status is an assumption and is not a legal conclusion. - Google Patents Collapsible core for concrete-molds. 620 15. The first assembly carries a cone, the second assembly carries an inner set of segments which form part of the core surface and engage the cone and the third assembly carries outer segments moved by inclined pins on the second assembly. Today. fol/Nsafl. Collapsible Core is majorly used for internal threading in mold parts. Conventional unscrewing molds are hydraulically driven, and the number and size of the threads on the part dictate the number of revolutions the core must rotate before the mold can open. 99 $ 18. Conventional unscrewing molds are hydraulically driven, and the number and size of the threads on the part dictate the. . (B). Collapsible Core, MiniCore and Expandable Cavity technology for injection molding, threaded parts or parts with undercuts, protrusions or cut-outs. The simple stones can collectively be termed flexural folding and are separated into orthogonal flexure, flexural slip and flexural flow. 5, 6 and 7, there is illustrated an over-center lock mechanism for the collapsible core. 04. Today. Bumpoffs are an easy way to mold lens covers, container caps, and similar parts with functions that call for them to snap into place. A collapsible core design can help mold parts with undercut details at one-third the cost of an unscrewing mold and. Collapsible core technology is a method for removing internal undercuts in parts, and is used primarily in caps and closures, plumbing components, and the medical industry. The structure is more simple than. 1. core sections section collapsible key section Prior art date 1924-11-05 Legal status (The legal status is an assumption and is not a legal conclusion. US1749420A US259237A US25923728A US1749420A US 1749420 A US1749420 A US 1749420A US 259237 A US259237 A US 259237A US 25923728 A US25923728 A US 25923728A US 1749420 A US1749420 A US 1749420A Authority US United States Prior art keywords sections core main shaft tire Prior art date 1928-03-05 Legal status (The legal.