US3886633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking fastener with increased resistance to separation
Assignee: Individual
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Filing: 1973-08-30
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Granted: 1975-06-03
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Expires: 1993-08-30
Abstract
Abstract A separably releasable fastener formed from resiliently yieldable material having a greater crown or rib mass of material on the respective crown portions of the heads aligned with the teeth of the heads or offset toward the hook sides of the heads, whereby resistance to separating distortion of the teeth or hook portions of the heads is increased in relation to the greater crown or rib mass of material, as compared to a conventional fastener of this type in which a uniform generally semi-circular crown formation from the tips of the teeth to the back of the heads is the normal profile configuration.
Inventors
- 👤 Steven Ausnit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:57
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/25; B65D33/2508; B65D33/2541; A; A44; A44B; A44B19/00; A44B19/10; A44B19/16; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/38; Y10S24/39; Y10T; Y10T24/00; Y10T24/45; Y10T24/45152; Y10T24/45173
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
248 words
In a separably releasable fastener formed from resiliently yieldable material and comprising at least one inner head on a first fastener strip and a complementary outer head on a second fastener strip, each head having a back side and a hook tooth side at respectively opposite sides of a generally central axis extending through a crown area of the head, each head having on its hook tooth side a hook tooth portion provided with a hook surface extending generally laterally relative to the central axis of the head, the hook surfaces of the hook tooth portions being interlockingly engaged with one another, and the hook tooth portions under conditions of stress separating through distortion of said hook tooth portions until they release from one another, the improvement comprising: a greater crown mass of material on the respective crown areas at the tooth portion side of the axis of each of the heads and generally aligned with the hook tooth portion at that side of the axis; and the crown area of each head at the back side of the axis being of substantially less mass than the greater crown mass of material at the hook tooth side of the axis; whereby resistance to separating distortion of the hook tooth portions of said heads is increased because of said greater crown mass of material, as compared with fastener heads having a generally uniform mass semi-cylindrical crown profile from the hook tooth sides to the back sides of the heads.
Claim 2
Dependent Claim
248 words
In a separably releasable fastener formed from resiliently yieldable material and comprising at least one inner head on a first fastener strip and a complementary outer head on a second fastener strip, each head having a back side and a hook tooth side at respectively opposite sides of a generally central axis extending through a crown area of the head, each head having on its hook tooth side a hook tooth portion provided with a hook surface extending generally laterally relative to the central axis of the head, the hook surfaces of the hook tooth portions being interlockingly engaged with one another, and the hook tooth portions under conditions of stress separating through distortion of said hook tooth portions until they release from one another, the improvement comprising: a greater crown mass of material on the respective crown areas at the tooth portion side of the axis of each of the heads and generally aligned with the hook tooth portion at that side of the axis; and the crown area of each head at the back side of the axis being of substantially less mass than the greater crown mass of material at the hook tooth side of the axis; whereby resistance to separating distortion of the hook tooth portions of said heads is increased because of said greater crown mass of material, as compared with fastener heads having a generally uniform mass semi-cylindrical crown profile from the hook tooth sides to the back sides of the heads.
Claim 3
Dependent Claim
248 words
In a separably releasable fastener formed from resiliently yieldable material and comprising at least one inner head on a first fastener strip and a complementary outer head on a second fastener strip, each head having a back side and a hook tooth side at respectively opposite sides of a generally central axis extending through a crown area of the head, each head having on its hook tooth side a hook tooth portion provided with a hook surface extending generally laterally relative to the central axis of the head, the hook surfaces of the hook tooth portions being interlockingly engaged with one another, and the hook tooth portions under conditions of stress separating through distortion of said hook tooth portions until they release from one another, the improvement comprising: a greater crown mass of material on the respective crown areas at the tooth portion side of the axis of each of the heads and generally aligned with the hook tooth portion at that side of the axis; and the crown area of each head at the back side of the axis being of substantially less mass than the greater crown mass of material at the hook tooth side of the axis; whereby resistance to separating distortion of the hook tooth portions of said heads is increased because of said greater crown mass of material, as compared with fastener heads having a generally uniform mass semi-cylindrical crown profile from the hook tooth sides to the back sides of the heads.
Claim 4
Dependent Claim
248 words
In a separably releasable fastener formed from resiliently yieldable material and comprising at least one inner head on a first fastener strip and a complementary outer head on a second fastener strip, each head having a back side and a hook tooth side at respectively opposite sides of a generally central axis extending through a crown area of the head, each head having on its hook tooth side a hook tooth portion provided with a hook surface extending generally laterally relative to the central axis of the head, the hook surfaces of the hook tooth portions being interlockingly engaged with one another, and the hook tooth portions under conditions of stress separating through distortion of said hook tooth portions until they release from one another, the improvement comprising: a greater crown mass of material on the respective crown areas at the tooth portion side of the axis of each of the heads and generally aligned with the hook tooth portion at that side of the axis; and the crown area of each head at the back side of the axis being of substantially less mass than the greater crown mass of material at the hook tooth side of the axis; whereby resistance to separating distortion of the hook tooth portions of said heads is increased because of said greater crown mass of material, as compared with fastener heads having a generally uniform mass semi-cylindrical crown profile from the hook tooth sides to the back sides of the heads.
Claim 5
Dependent Claim
78 words
A fastener according to claim 1, wherein the each hook tooth portion has a tip at the end of its hook surface and the head has a crown profile with surface elongation substantially parallel to the head axis and extending from the tooth tip to the greater crown mass of material, and said profile extending arcuately over the greater crown mass and sloping therefrom over the less mass at the back side of the head in each instance.
Claim 6
Dependent Claim
234 words
In a separably releasable fastener formed from resiliently yieldable material and comprising at least one inner head on a first fastener strip and a complementary outer head on a second fastener strip, each head having a back side and a hook tooth side at respectively opposite sides of a generally central axis extending through a crown area of the head, each head having on its hook side a hook tooth portion provided with a hook surface extending generally laterally relative to the central axis of the head, the hook surfaces of the hook tooth portions being interlockingly engaged with one another, and the hook tooth portions under conditions of stress separating through distortion of said hook tooth portions until they release from one another, the improvement comprising: a rib mass of material on each of the respective crown areas of said heads offset toward the tooth portion side of said axis of each head and aligned with the hook tooth portion of each head; and the crown area of each head at the back side of the axis being of less mass than the rib mass of material; whereby resistance to separating distortion of the hook tooth portions of said heads is increased because of the rib mass of material, as compared with fastener heads having a generally uniform semi-cylindrical crown profile from the hook tooth sides to the back sides of the head.
Claim 7
Dependent Claim
234 words
In a separably releasable fastener formed from resiliently yieldable material and comprising at least one inner head on a first fastener strip and a complementary outer head on a second fastener strip, each head having a back side and a hook tooth side at respectively opposite sides of a generally central axis extending through a crown area of the head, each head having on its hook side a hook tooth portion provided with a hook surface extending generally laterally relative to the central axis of the head, the hook surfaces of the hook tooth portions being interlockingly engaged with one another, and the hook tooth portions under conditions of stress separating through distortion of said hook tooth portions until they release from one another, the improvement comprising: a rib mass of material on each of the respective crown areas of said heads offset toward the tooth portion side of said axis of each head and aligned with the hook tooth portion of each head; and the crown area of each head at the back side of the axis being of less mass than the rib mass of material; whereby resistance to separating distortion of the hook tooth portions of said heads is increased because of the rib mass of material, as compared with fastener heads having a generally uniform semi-cylindrical crown profile from the hook tooth sides to the back sides of the head.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |