US4654934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Covered button
Assignee: YKK Snap Fasteners Japan Co Ltd
•
Filing: 1986-02-21
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Granted: 1987-04-07
•
Expires: 2006-02-21
Abstract
Abstract A covered button comprises a button body consisting of a mushroomlike head and a shank, a covering material covering the head and a washer adapted to retain the peripheral edge of the covering material in position on the back of the head. The inner periphery of the washer bites into the shank to prevent it from dislodging.
Inventors
- 👤 Kenji Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:34
CPC Classifications
A; A44; A44B; A44B1/00; A44B1/06; A44B1/08; A44B1/12; Y; Y10; Y10T; Y10T24/00; Y10T24/36; Y10T24/3606; Y10T24/3651; Y10T24/3655; Y10T24/367; Y10T24/3683; Y10T24/3698
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
119 words
A covered button including a button body which has a mushroomlike head covered with a piece of covering material and a shank formed inside, and a washer fitted onto the shank and which securely presses the fold-back peripheral edge of the covering material in place, characterized in that the washer is provided with a plurality of leaf-spring-like projections extending radially inwardly and away from said head and terminating in edges defining a hole having a diameter smaller than that of said shank, whereby the covering material is held in place by the washer, with the edges of the projections firmly engaging the shank under the springback urging of the covering material as well as the resiliency of said projections.
Claim 2
Dependent Claim
119 words
A covered button including a button body which has a mushroomlike head covered with a piece of covering material and a shank formed inside, and a washer fitted onto the shank and which securely presses the fold-back peripheral edge of the covering material in place, characterized in that the washer is provided with a plurality of leaf-spring-like projections extending radially inwardly and away from said head and terminating in edges defining a hole having a diameter smaller than that of said shank, whereby the covering material is held in place by the washer, with the edges of the projections firmly engaging the shank under the springback urging of the covering material as well as the resiliency of said projections.
Claim 3
Dependent Claim
31 words
A covered button according to claim 1 wherein the mushroomlike head of the button body, covered with the covering material, has an overall thickness less than those of conventional covered buttons.
References Cited (Backward Citations)
US2513182A
Cited
US2881495A
Cited
GB831316A
Cited
US3449802A
Cited
US3534446A
Cited
US3771199A
Cited
US4549331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |