Patent US3553040A successfully refreshed from Google Patents.
US3553040A
Expired / Lapsed
US
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Method for surface treatment of blind rivets
Assignee: Star Expansion Industries Corp
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Filing: 1967-09-21
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Granted: 1971-01-05
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Expires: 1987-09-21
Abstract
Abstract THIS INVENTION IS DIRECTED TO A METHOD FOR TREATING THE SURFACE O A BLIND RIVET SO THAT LOOSENESS AND/OR LOSS OF THE MANDREL HEAD CONTAINED THEREIN WILL BE EFFECTIVELY PREVENTED. THE METHOD COMPRISES SUBJECTING THE RIVET AND MANDREL TO CONTACT WITH A CLEANING SOLUTION, PREFERABLY CAUSTIC SOLUTION, FOR A TIME SUFFICIENT TO RENDER THE SURFACES THEREOF FREE OF CONTAMINANTS SUCH AS LUBRICANTS, THIN FILMS OF OIL, OR THE LIKE. A RESULTINGLY CLEANED OR TREATED SURFACE ON RIVET AND MANDREL IS PROVIDED THEREBY, WHICH MANDREL WHEN PULLED THROUGH THE RIVET BORE WILL CAUSE ENROBING OF THE RIVET SHANK OVER THE MANDRELL HEAD IN TIGHT ENVELOPING RELATIONSHIP.
Inventors
- 👤 Walter Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:39
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/04; F16B19/08; F16B19/10; F16B19/1027; F16B19/1036; F16B19/1045; F16B19/1054; C; C23; C23G; C23G1/00; C23G1/14; C23G1/22
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |