Patent US3225362A successfully refreshed from Google Patents.
Patent US3102571A successfully refreshed from Google Patents.
US3102571A
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Screw fasteners
Assignee: Scovill Inc
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Filing: 1960-12-12
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Granted: 1963-09-03
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Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 John F Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:15
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/24; F16B33/00; F16B33/006; F16B43/00; Y; Y10; Y10S; Y10S411/00; Y10S411/904; Y10S411/908; Y10S411/924; Y10S411/947; Y10S411/955; Y10S411/956; Y10S411/96; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49796; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A ONE-PIECE PLASTIC SCREW AND WASHER COMBINATION COMPRISING (A) A HEAD; (B) A SHANK EXTENDING FROM SAID HEAD AND HAVING A THREADED SECTION; (C) AN ANNULAR WASHER SURROUNDING SAID SHANK INTERMEDIATE THE ENDS OF SAID THREADED SECTION IN A POSITION TO PROVIDE MORE THAN ONE COMPLETE THEAD CONVOLUTION ON EACH SIDE OF SAID WASHER; AND, (D) A FRANGIBLE SECTION INTEGRALLY JOINING SAID WASHER TO SAID SHANK, SAID FRANGIBLE SECTION HAVING AN AXIALLY EXTENDING THICKNESS EXCEEDING ONE-HALF OF THE THREAD PITCH AND PROVIDING THE MINIMUM CROSS-SECTIONAL AREA BETWEEN THE WASHER AND SHANK, SAID FRANGIBLE SECTION BEING POSITIONED WHOLLY OUTSIDE OF A CYLIN-
Claim 2
Dependent Claim
101 words
A ONE-PIECE PLASTIC SCREW AND WASHER COMBINATION COMPRISING (A) A HEAD; (B) A SHANK EXTENDING FROM SAID HEAD AND HAVING A THREADED SECTION; (C) AN ANNULAR WASHER SURROUNDING SAID SHANK INTERMEDIATE THE ENDS OF SAID THREADED SECTION IN A POSITION TO PROVIDE MORE THAN ONE COMPLETE THEAD CONVOLUTION ON EACH SIDE OF SAID WASHER; AND, (D) A FRANGIBLE SECTION INTEGRALLY JOINING SAID WASHER TO SAID SHANK, SAID FRANGIBLE SECTION HAVING AN AXIALLY EXTENDING THICKNESS EXCEEDING ONE-HALF OF THE THREAD PITCH AND PROVIDING THE MINIMUM CROSS-SECTIONAL AREA BETWEEN THE WASHER AND SHANK, SAID FRANGIBLE SECTION BEING POSITIONED WHOLLY OUTSIDE OF A CYLIN-
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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |