US3288036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple linear actuating cylinder
Assignee: Individual
•
Filing: 1963-09-12
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Granted: 1966-11-29
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Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 Robert M Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:11
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/028; F15B11/036; F15B11/0365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A LINEAR ACTUATING CYLINDER COMPRISING: A PLURALITY OF INTERFITTING CYLINDRICAL GUIDES; AND A PLURALITY OF PISTONS POSITIONED END-TO-END, EACH OF SAID PISTONS BEING ASSEMBLED IN ONE OF SAID INTERFITTING CYLINDRICAL GUIDES, RESPECTIVELY, FORMING THEREBY A SECTION; THE UPPER ONE OF SAID PLURALITY OF PISTONS BEING SOLID, THE REMAINING PISTONS EACH HAVING A CENTRAL APERTURE FOR PNEUMATIC OR FLUID FLOW TRANSFER THERETHROUGH; THE BOTTOM OF EACH OF SAID PISTONS BEING NORMALLY POSITIONED AT THE TOP OF SAID SUCCEEDING PISTON WHEREBY THE PRESSURE APPLIED TO THE TOP MOST OF SAID PISTONS IS MULTIPLIED BY A FACTOR BETWEEN .8 AND .9 TIMES THE NUMBER OF SAID SECTIONS ASSEMBLED TOGETHER IN-LINE ON A COMMON AXIS.
Claim 2
Dependent Claim
111 words
A LINEAR ACTUATING CYLINDER COMPRISING: A PLURALITY OF INTERFITTING CYLINDRICAL GUIDES; AND A PLURALITY OF PISTONS POSITIONED END-TO-END, EACH OF SAID PISTONS BEING ASSEMBLED IN ONE OF SAID INTERFITTING CYLINDRICAL GUIDES, RESPECTIVELY, FORMING THEREBY A SECTION; THE UPPER ONE OF SAID PLURALITY OF PISTONS BEING SOLID, THE REMAINING PISTONS EACH HAVING A CENTRAL APERTURE FOR PNEUMATIC OR FLUID FLOW TRANSFER THERETHROUGH; THE BOTTOM OF EACH OF SAID PISTONS BEING NORMALLY POSITIONED AT THE TOP OF SAID SUCCEEDING PISTON WHEREBY THE PRESSURE APPLIED TO THE TOP MOST OF SAID PISTONS IS MULTIPLIED BY A FACTOR BETWEEN .8 AND .9 TIMES THE NUMBER OF SAID SECTIONS ASSEMBLED TOGETHER IN-LINE ON A COMMON AXIS.
References Cited (Backward Citations)
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US1210179A
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US2361130A
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |