Patent US4644724A successfully refreshed from Google Patents.
US4644724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandwich panel and end strips therefor and assembly of such sandwich panels
Assignee: CONTRACTUAL SERVICES (JERSEY) Ltd A CORP OF JERSEY
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Filing: 1985-04-04
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Granted: 1987-02-24
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Expires: 2005-04-04
Abstract
Abstract End strips for longitudinal edges of a sandwich panel to be used in facade cladding or in garage or entrance doors, the strips being provided with lugs which extend along the length of webs and each of which is arranged to engage with a lug of complementary shape on the other strip. Each lug is disposed on one side edge of the web with an adjoining flange which is disposed at least in part at an acute angle relative to the web, to co-operate with the adjoining cover plate of the sandwich panel.
Inventors
- 👤 Hendrikus J. Schijf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:42
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/48; E06B3/485; E06B3/486; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0889; E05; E05D; E05D1/00; E05D1/04; E06B9/00; E06B9/02; E06B9/08; E06B9/11; E06B9/15; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/106; E06B2009/1505; E06B2009/1522; E06B2009/1533; E06B2009/1538; E06B2009/1544
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
152 words
A sandwich panel adopted to be interconnected to a second similar panel, each panel being formed of two cover plates with filling material therebetween, and two end strips disposed at the longitudinal edges of said panels, each strip having a web provided with a lug extending along the length of said web for engagement with a lug of complementary shape on a strip of a said second panel, said lug being disposed on one side edge of said web and an adjoining flange at least part of which extends at an acute angle relative to said web, the web on the opposite side edge being provided with a further flange at least part of which extends at an acute angle relative to said web, the adjoining flange and the further flange each being disposed on the side of said web remote from said lug for the purpose of fastening said cover plates.
Claim 2
Dependent Claim
152 words
A sandwich panel adopted to be interconnected to a second similar panel, each panel being formed of two cover plates with filling material therebetween, and two end strips disposed at the longitudinal edges of said panels, each strip having a web provided with a lug extending along the length of said web for engagement with a lug of complementary shape on a strip of a said second panel, said lug being disposed on one side edge of said web and an adjoining flange at least part of which extends at an acute angle relative to said web, the web on the opposite side edge being provided with a further flange at least part of which extends at an acute angle relative to said web, the adjoining flange and the further flange each being disposed on the side of said web remote from said lug for the purpose of fastening said cover plates.
Claim 3
Dependent Claim
56 words
A sandwich panel as claimed in claim 1, wherein said adjoining flange and said further flange are provided with a hook-shaped portion at its free edge, and said cover plates have turned-back edges which lie against said adjoining flange and said further flange, respectively, and engage by an edge in said hook-shaped edges of said flanges.
Claim 4
Dependent Claim
121 words
A sandwich panel according to claim 1, wherein one of said end strips is provided with another flange disposed on that side of the web which faces away from said panel, the other flange merging at its free edge into a thickened portion of circular cross-section, said thickened portion near said other flange being provided with a flattened portion, which together with one flank of said other flange defines a right angle, and the web of said other end strip merges by means of a part-cylinder wall, which forms the lug of said strip, into said adjoining flange, the junction of said part-cylinder wall with said adjoining flange being positioned at the location of a side face of said sandwich panel.
Claim 5
Dependent Claim
49 words
A sandwich panel according to claim 3, wherein said part-cylinder wall is provided with a freely projecting flange near said web of said strip, said freely projecting flange forming an extension of said web and extending from the side face opposite to that on which said lug is disposed.
References Cited (Backward Citations)
US1995477A
Cited
US2495862A
Cited
GB1013091A
Cited
US3708940A
Cited
US3803787A
Cited
US3771277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |