Patent US4123826A successfully refreshed from Google Patents.
US4123826A
Expired / Lapsed
US
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Separable fastener
Assignee: INTERNATIONAL FASTENER ESTABLISHMENT
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Filing: 1975-06-03
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Granted: 1978-11-07
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Expires: 1995-06-03
Abstract
Abstract A separable fastener is disclosed which has the form of a tape having a plurality of laterally adjacent uniformly corrugated strips. Adjoining strips are staggered relative to one another so that the ridges of one strip are laterally aligned with the depressions or spaces between the ridges of adjoining strips, with the adjoining strips being joined together at their cross-over points. A second tape of identical construction can be joined to the first tape by merely pressing the two tapes together in a face-to-face relationship. There is also disclosed apparatus and a method for manufacturing the separable fastener which includes means for passing a strip of thermoplastic material through mutually engaging rolling dies which create the corrugations.
Inventors
- 👤 Akio Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:22
CPC Classifications
B; B29; B29C; B29C67/00; A; A44; A44B; A44B18/00; A44B18/0046; A44B18/0053; B26; B26D; B26D1/00; B26D1/01; B26D1/12; B26D1/14; B26D1/24; B26D1/245; B29C43/00; B29C43/22; B29C43/222; B29C43/32; B29C43/44; B29C43/46; B29C65/00; B29C65/56; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/20; B29C66/21; B29C66/40; B29C66/41; B29C66/43; B29C66/435; B29C66/438; B29C2043/461; B29L; B29L2031/00; B29L2031/727; B29L2031/7276; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/38; Y10S24/40; Y10T; Y10T24/00; Y10T24/45; Y10T24/45152
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
173 words
A fastener comprising: first and second press-on separable facing fastener portions, each of said fastener portions having a plurality of adjoining, longitudinal, undulating strips, each of said strips providing a series of spaced apart ridges, within each of said fastener portions, adjoining ones of said strips being longitudinally staggered relative to each other, the thickness of said strips being substantially less than the height of said ridges to provide openings under said ridges, within each of said fastener portions, a first one of said strips being laterally spaced from a third one of said strips by a second one of said strips, the lateral distance between the ridges of said first one of said strips and said third one of said strips being substantially equal to the lateral width of said second one of said strips, the edges of said strips of said first fastener portion interferring with and frictionally engaging the edges of said strips of said second fastener portion, each of said fastener portions being an integral element having substantial resilience.
Claim 2
Dependent Claim
173 words
A fastener comprising: first and second press-on separable facing fastener portions, each of said fastener portions having a plurality of adjoining, longitudinal, undulating strips, each of said strips providing a series of spaced apart ridges, within each of said fastener portions, adjoining ones of said strips being longitudinally staggered relative to each other, the thickness of said strips being substantially less than the height of said ridges to provide openings under said ridges, within each of said fastener portions, a first one of said strips being laterally spaced from a third one of said strips by a second one of said strips, the lateral distance between the ridges of said first one of said strips and said third one of said strips being substantially equal to the lateral width of said second one of said strips, the edges of said strips of said first fastener portion interferring with and frictionally engaging the edges of said strips of said second fastener portion, each of said fastener portions being an integral element having substantial resilience.
Claim 3
Dependent Claim
59 words
The fastener of claim 1 wherein: each of said strips further provides a series of grooves, said grooves and said ridges of each of said strips alternating along the longitudinal direction of the strip, adjoining strips being staggered such that a lateral line across one of said ridges in a strip is aligned with a groove in adjoining strips.
Claim 4
Dependent Claim
87 words
The fastener of claim 2 wherein: within each of said portions, adjoining ones of said strips are joined only at the cross-over points of the undulating strips, said strips being longitudinally positioned so that a lateral line through any one of said cross-over points will pass through cross-over points of each adjacent strip, each of said cross-over points lying along one of said lateral lines, the fastener when flexed longitudinally bending along said lateral lines through said cross-over points, thereby minimizing deformation of said ridges and grooves.
Claim 5
Dependent Claim
13 words
The fastener of claim 1 wherein said strips are of substantially equal width.
Claim 6
Dependent Claim
13 words
The fastener of claim 3 wherein said strips are of substantially equal width.
Claim 7
Dependent Claim
12 words
The fastener of claim 1 wherein said strips are of differing width.
Claim 8
Dependent Claim
12 words
The fastener of claim 3 wherein said strips are of differing width.
Claim 9
Dependent Claim
13 words
The fastener of claim 1 wherein said portions are of the same member.
Claim 10
Dependent Claim
13 words
The fastener of claim 3 wherein said portions are of the same member.
References Cited (Backward Citations)
US2733177A
Cited
US646289A
Cited
FR1037455A
Cited
US3303540A
Cited
US3401431A
Cited
US3533871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |