Patent US3561068A successfully refreshed from Google Patents.
US3561068A
Expired / Lapsed
US
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Fasteners
Assignee: Illinois Tool Works Inc
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Filing: 1969-03-14
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Granted: 1971-02-09
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Expires: 1989-03-14
Abstract
Abstract THIS INVENTION RELATES TO A PLASTIC SNAP FASTENER HAVING A HEAD FOR ENGAGING ONE SIDE OF AN APERTURED PANEL AND A SHANK CARRYING RESILIENT SHOULDER MEMBERS FOR ENGAGING THE OPPOSITE SIDE OF A PANEL. THE RESILIENT MEMBERS INCLUDE VARIABLE THICKNESS WEBS WHICH DECREASE IN THICKNESS FROM A MAXIMUM ABREAST THE START OF THE ENTERING FACE TO A MINIMUM ABREAST THE RETAINING FACE OF THE RESILIENT MEMBERS. THE WEBS CONTROL AND PROVIDE AND RELIABLE SNAP ACTION TO THE FASTENER.
Inventors
- 👤 Gordon Croxson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:19
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; F16B21/08; F16B21/086; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44017; Y10T24/44026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |