US3454779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling device for dual rotary shafts
Assignee: US Philips Corp
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Filing: 1966-12-01
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Granted: 1969-07-08
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Roelf Jan Meijer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
H; H02; H02K; H02K27/00; F; F02; F02B; F02B63/00; F02B63/04; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; H02K7/00; H02K7/18; H02K7/1807; H02K7/1815; F02G2243/00; F02G2243/02; F02G2243/04; F02G2243/08; F02G2270/00; F02G2270/42; F02G2270/425; F02G2270/85; F02G2280/00; F02G2280/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A DEVICE COMPRISING AN ENGINE SUCH AS A HOT GAS ENGINE OF THE DISPLACER TYPE HAVING TWO ROTARY OUTPUTS INCOMBINATION WITH APPARATUS TO BE DRIVEN HAVING TWO SUBSTANTIALLY EQUAL LOADS FOR DRIVE CONNECTION WITH SAID OUTPUTS, THE ENGINE INCLUDING: (A) CONCENTRIC PISTON AND DISPLACER DRIVE RODS DRIVEN IN RELATIVE AXIAL MOVEMENT, (B) TWO CRANKSHAFTS MOUNTED FOR SYNCHRONOUS ROTATION IN OPPOSITE DIRECTIONS, THE CENTER LINES OF THE SHAFTS EXTENDING MUTUALLY IN PARALLEL AND BEING LOCATED ON EITHER, SIDE OF A PLANE THROUGH THE CENTER LINE OF THE ENGINE, (C) A PAIR OF IDENTICAL CRANKS, ONE LOCATED ON EACH SHAFT, (D) LINKS CONNECTING EACH CRANK TO BOTH DRIVE RODS, EACH ROD HAVING STRAIGHT LINE MOVEMENT OUT-OF-PHASE WITH THE OTHER, AND (E) A PAIR OF INTERMESHING GEARS, ONE ROTATABLY CARRIED BY EACH SHAFT.
Claim 2
Independent Claim
130 words
A DEVICE COMPRISING AN ENGINE SUCH AS A HOT GAS ENGINE OF THE DISPLACER TYPE HAVING TWO ROTARY OUTPUTS INCOMBINATION WITH APPARATUS TO BE DRIVEN HAVING TWO SUBSTANTIALLY EQUAL LOADS FOR DRIVE CONNECTION WITH SAID OUTPUTS, THE ENGINE INCLUDING: (A) CONCENTRIC PISTON AND DISPLACER DRIVE RODS DRIVEN IN RELATIVE AXIAL MOVEMENT, (B) TWO CRANKSHAFTS MOUNTED FOR SYNCHRONOUS ROTATION IN OPPOSITE DIRECTIONS, THE CENTER LINES OF THE SHAFTS EXTENDING MUTUALLY IN PARALLEL AND BEING LOCATED ON EITHER, SIDE OF A PLANE THROUGH THE CENTER LINE OF THE ENGINE, (C) A PAIR OF IDENTICAL CRANKS, ONE LOCATED ON EACH SHAFT, (D) LINKS CONNECTING EACH CRANK TO BOTH DRIVE RODS, EACH ROD HAVING STRAIGHT LINE MOVEMENT OUT-OF-PHASE WITH THE OTHER, AND (E) A PAIR OF INTERMESHING GEARS, ONE ROTATABLY CARRIED BY EACH SHAFT.
References Cited (Backward Citations)
US2698394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |