US3629930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a self-gripping fastening device
Assignee: Individual
•
Filing: 1969-05-07
•
Granted: 1971-12-28
•
Expires: 1989-05-07
Abstract
Abstract A self-gripping fastening device for connecting together a pair of articles, only one of which is required to be provided with the device, and the method for making the same. The device comprises a plurality of barbed fastening elements, each being secured at one end to one surface of one of the articles to be gripped. When the fastening device is pressed against the opposing surface of the other article to be gripped, the free ends of the fastening elements penetrate and lodge in the other article to thereby effect adhesion between the pair of articles.
Inventors
- 👤 George C Brumlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:55
CPC Classifications
A; A44; A44B; A44B18/00; A44B18/0003; A44B18/0015; Y; Y10; Y10S; Y10S411/00; Y10S411/921; Y10T; Y10T24/00; Y10T24/27; Y10T24/2708; Y10T24/275; Y10T24/2758; Y10T24/2767; Y10T24/33; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49798; Y10T29/49826; Y10T29/49833; Y10T428/00; Y10T428/24; Y10T428/24008; Y10T428/24017
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A method of making a self-gripping fastening assembly having a gripping face capable of adhering to an opposed article having a penetrable face by pressing said faces together, said method comprising the steps of forming plurality of fastening elements with each having an elongated, thin, filamentlike body with at least one end terminating in a hook-shaped barb, and mounting said fastening elements on a member having a penetrable surface by aligning said fastening elements with their elongated bodies substantially perpendicular to said penetrable surface, and projecting said elements longitudinally at the penetrable surface of said member with sufficient force to cause one end portion of said elongated body to penetrate and embed in said penetrable surface with each body projecting perpendicularly from said surface and with a hook shaped barb located at the free end of each element remote from said surface.
Claim 2
Independent Claim
142 words
A method of making a self-gripping fastening assembly having a gripping face capable of adhering to an opposed article having a penetrable face by pressing said faces together, said method comprising the steps of forming plurality of fastening elements with each having an elongated, thin, filamentlike body with at least one end terminating in a hook-shaped barb, and mounting said fastening elements on a member having a penetrable surface by aligning said fastening elements with their elongated bodies substantially perpendicular to said penetrable surface, and projecting said elements longitudinally at the penetrable surface of said member with sufficient force to cause one end portion of said elongated body to penetrate and embed in said penetrable surface with each body projecting perpendicularly from said surface and with a hook shaped barb located at the free end of each element remote from said surface.
Claim 3
Dependent Claim
31 words
A method according to claim 1 which includes the step of applying a layer of tacky adhesive to said member to form said penetrable surface, prior to projecting said element thereat.
Claim 4
Dependent Claim
28 words
A method according to claim 1 which includes the step of forming said plurality of fastening elements with a hook-shaped barb at each end of said elongated body.
Claim 5
Dependent Claim
55 words
A method according to claim 2 in which includes the step of projecting said fastening elements longitudinally at said penetrable surface with sufficient force to cause one of the hook-shaped barbs of each fastening element to penetrate and lodge within said penetrable surface to a depth sufficient to provide lateral support to said embedded element.
Claim 6
Dependent Claim
64 words
A method according to claim 1 in which the step forming said fastening element comprises the steps of extruding an elongated sheet of plastic material having the profile of the fastening element to be formed, with hook portions at the respective ends thereof, and thereafter cutting said sheet into narrow sections by a series of closely spaced parallel slices to form said fastening elements.
Claim 7
Dependent Claim
90 words
A method according to claim 5 which includes the additional steps of forming the profile of said sheet of plastic material with prestressed, tightly curled hook portions at the respective ends thereof, with sharp terminal edges directed toward the body of said sheet, whereby the fastening elements cut from said sheet have tightly curled hooks at the ends thereof, and finally treating the exposed hooks of the mounted fastening elements in such a manner as to cause the tightly curled exposed hooks to open and expose the sharp ends thereof.
References Cited (Backward Citations)
US920808A
Cited
US1995173A
Cited
DE801181C
Cited
US3128544A
Cited
US3136047A
Cited
US3403429A
Cited
US3485518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |