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US3867238A
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US
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Flexile core material for laminated structures and method of producing the same
Assignee: Chemacryl Plastics Ltd
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Filing: 1973-03-06
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Granted: 1975-02-18
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Expires: 1993-03-06
Abstract
Abstract A flexile core material for laminated structures consists of a sheet of rigid elastic foam plastic material, said sheet being slotted on one side to define an array of contiguous, discrete, rectangular block-like elements which are articulately interconnected by hinge pieces constituted by unslotted portions of the sheet on the other side thereof.
Inventors
- 👤 Thomas J Johannsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:52
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B26; B26D; B26D3/00; B26D3/006; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; B32B3/00; B32B3/10; B32B3/18; B63; B63B; B63B5/00; B63B5/24; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; B29C2793/00; B29C2793/0036; B29C53/00; B29C53/02; B29C53/04; B29K; B29K2027/00; B29K2027/06; B29K2105/00; B29K2105/04; B29L; B29L2031/00; B29L2031/30; B29L2031/3067; B29L2031/307; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0221; B32B2266/0235; B32B2605/00; B32B2605/12; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066; Y10T156/1067; Y10T428/00; Y10T428/17; Y10T428/24; Y10T428/24479; Y10T428/24488; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/929; Y10T83/9314; Y10T83/9411; Y10T83/9449
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
84 words
A flexile core material for laminated structures comprising a sheet of rigid elastic foam plastic material, said sheet being provided with a plurality of intersecting, rectilinear, slots defining an array of contiguous discrete, polygonal blocklike elements, each element being articulately connected to its adjacent elements by hingepieces constituted by unslotted portions of said material, each slot extending for the full thickness of the sheet save at regularly spaced locations at which it extends for less than the full thickness to define said unslotted portions.
Claim 2
Dependent Claim
84 words
A flexile core material for laminated structures comprising a sheet of rigid elastic foam plastic material, said sheet being provided with a plurality of intersecting, rectilinear, slots defining an array of contiguous discrete, polygonal blocklike elements, each element being articulately connected to its adjacent elements by hingepieces constituted by unslotted portions of said material, each slot extending for the full thickness of the sheet save at regularly spaced locations at which it extends for less than the full thickness to define said unslotted portions.
Claim 3
Dependent Claim
14 words
A flexible core material according to claim 1, wherein the block-like elements are rectangular.
Claim 4
Dependent Claim
14 words
A flexile core material according to claim 2, wherein the block-like elements are square.
Claim 5
Dependent Claim
22 words
A flexile core material according to claim 2, wherein each block-like element is connected to its adjacent elements at its corners only.
Claim 6
Dependent Claim
29 words
A flexile core material according to claim 4, wherein each block-like element is connected to its adjacent elements by hingepieces disposed at one pair of diagonally opposite corners only.
Claim 7
Dependent Claim
14 words
A flexile core material according to claim 4, wherein the block-like elements are square.
Claim 8
Dependent Claim
40 words
A flexile core material according to claim 2, wherein each block-like element is connected to its adjacent elements by three hingepieces disposed respectively at the midpoint of one of its sides and at the corners defined by its other sides.
Claim 9
Dependent Claim
20 words
A flexile core material according to claim 1, in which the hingepieces are contiguous with One side of the sheet.
Claim 10
Dependent Claim
19 words
A flexile core material according to claim 1, in which the hingepieces lie between opposite sides of the sheet.
Claim 11
Dependent Claim
89 words
A flexile core material for laminated structures consisting of a sheet of rigid elastic foam plastic material, said sheet being provided with a plurality of intersecting slots extending from one side of the sheet for the full thickness of the sheet to define an array of contiguous discrete, rectangular block-like elements, said slots extending continuously over said one side of the sheet and being interrupted at intervals on the other side of the sheet to define a plurality of discrete hingepieces by which the block-like elements are articulately interconnected.
Claim 12
Dependent Claim
89 words
A flexile core material for laminated structures consisting of a sheet of rigid elastic foam plastic material, said sheet being provided with a plurality of intersecting slots extending from one side of the sheet for the full thickness of the sheet to define an array of contiguous discrete, rectangular block-like elements, said slots extending continuously over said one side of the sheet and being interrupted at intervals on the other side of the sheet to define a plurality of discrete hingepieces by which the block-like elements are articulately interconnected.
Claim 13
Dependent Claim
23 words
A flexile core material according to claim 10, wherein each block-like element is so connected to its adjacent elements at its corners only.
Claim 14
Dependent Claim
27 words
A flexile core material according to claim 11, wherein each block-like element is so connected to its adjacent elements at one pair of diagonally opposite corners only.
Claim 15
Dependent Claim
36 words
A flexile core material according to claim 10, wherein each block-like element is so connected to its adjacent elements at the midpoint of one of its sides and at the corners defined by its other sides.
References Cited (Backward Citations)
US1967444A
Cited
US2785739A
Cited
US2768924A
Cited
US3042562A
Cited
US3106983A
Cited
US3285768A
Cited
US3397106A
Cited
US3495487A
Cited
US3591443A
Cited
US3520220A
Cited
US3764450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |