Patent US3276206A successfully refreshed from Google Patents.
US3276206A
Expired / Lapsed
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Pressure intensifier mechanism
Assignee: Individual
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Filing: 1963-06-10
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Granted: 1966-10-04
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Expires: 1983-06-10
Abstract
No abstract record available.
Inventors
- 👤 Calkins Dolores
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:33
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31; F; F15; F15B; F15B2211/00; F15B2211/20; F15B2211/21; F15B2211/216; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/775
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
139 words
A PRESSURE INTENSIFIER MECHANISM COMPRISING A HOUSING, FIRST PISTON MEANS MOUNTED FOR RECIPROCATION WITHIN SAID HOUSING FOR MOVEMENT BETWEEN RETRACTED AND EXTENDED POSITIONS AND BEING ENGAGEABLE WITH A MEMBER TO WHICH PRESSURE IS TO BE APPLIED, MEANS INCLUDING SAID FIRST PISTON MEANS DEFINING A PRESSURE CHAMBER, EMANS DEFINING A RESERVOIR CHAMBER, A SUBSTANTIALLY INCOMPRESSIBLE FLUID CONFINED WITHIN SAID CHAMBERS, SECOND PISTON MEANS MOUNTED FOR RECIPROCATION WITHIN SAID HOUSING FOR MOVEMENT INDEPENDENTLY OF SAID FIRST PISTON MEANS BETWEEN RETRACTED AND EXTENDED POSITIONS, MEANS COMMUNICATING SAID CHAMBERS FOR FLOW OF SAID FLUID FROM SAID RESERVOIR CHAMBER TO SAID PRESSURE CHAMBER IN RESPONSE TO MOVEMENT OF SAID FIRST PISTON MEANS TO SAID EXTENDED POSITION THEREOF AND PREVENTING FLOW BETWEEN SAID CHAMBERS IN RESPONSE TO MOVEMENT OF SAID SECOND PISTON MEANS TO SAID EXTENDED POSITION THEREOF, SAID SECOND PISTON MEANS IN SAID EXTENDED
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |