Patent US3440703A successfully refreshed from Google Patents.
US3440703A
Expired / Lapsed
US
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Method of preparing metal sealing surfaces
Assignee: Ajem Laboratories Inc
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Filing: 1966-12-21
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Granted: 1969-04-29
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Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Robert G Millhiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:53
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0818; F16J15/062; F16J2015/085; F16J2015/0856; F16J2015/0868; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49297; Y10T29/49826; Y10T29/49833; Y10T29/49995; Y10T29/49996
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR MANUFACTURING A SEAL FOR A JOINT BETWEEN SURFACES OF ADJOINING PARTS WHICH COMPRISES PROVIDING THE SURFACES TO INTERFIT IN GROSS CONFORMITY WITH EACH OTHER OVER A SUBSTANTIAL AREA, FORMING AT LEAST ONE OF THE SURFACE WITH SUBSTANTIALLY CONTINUOUS CUTS, GRIT BLASTING SAID CUT SURFACE OVER AT LEAST A SUBSTANTIAL PORTION OF SAID INTERFITTING AREA WITH KINETIC ENGERY SUFFICIENT TO DRIVE SAID GRIT PARTICLES AGAINST SAID SURFACE WITH FORMATION OF SUBSTANTIALLY CONTIGUOUS SMALL PITS WITH CONTINUOUS RELATIVELY SHARP BARRIER RIDGES THEREBETWEEN AND PRESSING SAID PARTS TOGETHER TO FORCE SAID RIDGES AGAINST THE INTERFITTING SURFACE TO FORM A STATIONARY SEAL THEREWITH.
Claim 2
Dependent Claim
102 words
A PROCESS FOR MANUFACTURING A SEAL FOR A JOINT BETWEEN SURFACES OF ADJOINING PARTS WHICH COMPRISES PROVIDING THE SURFACES TO INTERFIT IN GROSS CONFORMITY WITH EACH OTHER OVER A SUBSTANTIAL AREA, FORMING AT LEAST ONE OF THE SURFACE WITH SUBSTANTIALLY CONTINUOUS CUTS, GRIT BLASTING SAID CUT SURFACE OVER AT LEAST A SUBSTANTIAL PORTION OF SAID INTERFITTING AREA WITH KINETIC ENGERY SUFFICIENT TO DRIVE SAID GRIT PARTICLES AGAINST SAID SURFACE WITH FORMATION OF SUBSTANTIALLY CONTIGUOUS SMALL PITS WITH CONTINUOUS RELATIVELY SHARP BARRIER RIDGES THEREBETWEEN AND PRESSING SAID PARTS TOGETHER TO FORCE SAID RIDGES AGAINST THE INTERFITTING SURFACE TO FORM A STATIONARY SEAL THEREWITH.
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) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |