Patent US3304827A successfully refreshed from Google Patents.
US3304827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring type torque indicating lock washer
Assignee: Individual
•
Filing: 1965-10-13
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Granted: 1967-02-21
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Expires: 1985-10-13
Abstract
No abstract record available.
Inventors
- 👤 Clarence C Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:49
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/24; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A SPRING TYPE TORQUE INDICATING LOCK WASHER INCLUDING AN ANNULAR DISHED BODY, SAID BODY COMPRISING AN UPWARDLY ROUNDED, ANNULAR PORTION AND AN ANNULAR SKIRT DEPENDING FROM THE OUTER PERIPHERY OF SAID ROUNDED PORTION AND INCLINING DOWNWARDLY FROM SAID ROUNDED PORTION, A SERIES OF CIRCUMFERENTIALLY SPACED RADIALLY DIRECTED LOUVERED PASSAGEWAYS FORMED IN THE UNDERSIDE OF SAID SKIRT AND EXTENDING FROM SAID ROUNDED PORTION TO THE OUTER CIRCUMFERENCE OF SAID SKIRT AND FIRST AND SECOND CONCENTRICALLY ARRANGED RINGS OF DIFFERENTLY COLORED EXTRUDABLE INDICATING MATERIAL CARRIED BY THE UNDERSIDE OF SAID ROUNDED PORTION, SAID FIRST AND SECOND RINGS OF MATERIAL BEING EXTRUDED IN SUCCESSION THROUGH SAID PASSAGEWAYS UPON SUFFICIENT OR OVER COMPRESSION OF SAID WASHER.
Claim 2
Dependent Claim
112 words
A SPRING TYPE TORQUE INDICATING LOCK WASHER INCLUDING AN ANNULAR DISHED BODY, SAID BODY COMPRISING AN UPWARDLY ROUNDED, ANNULAR PORTION AND AN ANNULAR SKIRT DEPENDING FROM THE OUTER PERIPHERY OF SAID ROUNDED PORTION AND INCLINING DOWNWARDLY FROM SAID ROUNDED PORTION, A SERIES OF CIRCUMFERENTIALLY SPACED RADIALLY DIRECTED LOUVERED PASSAGEWAYS FORMED IN THE UNDERSIDE OF SAID SKIRT AND EXTENDING FROM SAID ROUNDED PORTION TO THE OUTER CIRCUMFERENCE OF SAID SKIRT AND FIRST AND SECOND CONCENTRICALLY ARRANGED RINGS OF DIFFERENTLY COLORED EXTRUDABLE INDICATING MATERIAL CARRIED BY THE UNDERSIDE OF SAID ROUNDED PORTION, SAID FIRST AND SECOND RINGS OF MATERIAL BEING EXTRUDED IN SUCCESSION THROUGH SAID PASSAGEWAYS UPON SUFFICIENT OR OVER COMPRESSION OF SAID WASHER.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |