Patent US3876344A successfully refreshed from Google Patents.
US3876344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counterbalance for rotary engine
Assignee: Individual
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Filing: 1973-05-08
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Granted: 1975-04-08
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Expires: 1993-05-08
Abstract
Abstract A counterbalance for a rotary engine, e.g. of the type described in application Ser. No. 203,211 now U.S. Pat. No. 3,744,941, includes a disc rotating about the drive shaft and within the rotor side wall opening, and a counterbalance weight suspended therefrom.
Inventors
- 👤 Leonard R Nestor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:52
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/22; F01C21/00; F01C21/003; F02; F02B; F02B53/00; F02B2053/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
81 words
A counterbalance unit for a rotary device having a drive shaft and a rotor disposed for oscillative rotation about said shaft and having side plates with circular central openings, said unit comprising a guide disc fitting within a said rotor plate opening for rotation therein and having an off-center circular hub opening for rotation of said shaft, and a counterbalance weight integral with said disc and extending from one side of said disc to oscillative rotation outside of said rotor plate.
Claim 2
Dependent Claim
81 words
A counterbalance unit for a rotary device having a drive shaft and a rotor disposed for oscillative rotation about said shaft and having side plates with circular central openings, said unit comprising a guide disc fitting within a said rotor plate opening for rotation therein and having an off-center circular hub opening for rotation of said shaft, and a counterbalance weight integral with said disc and extending from one side of said disc to oscillative rotation outside of said rotor plate.
Claim 3
Dependent Claim
102 words
A rotary engine comprising a stator having side plates each with an axial opening; a drive shaft extending through the stator side plate openings; a rotor, having side plates each with an axial circular opening, for oscillative rotation within said stator and about said shaft; and, at least at one side of said engine, a counterbalance unit rotating about said shaft and comprising a guide disc rotating within the rotor side plate opening and having an offcenter circular hub opening for rotation of said shaft therein, and a counterbalance weight integral with said disc and disposed outwardly of said rotor side plate.
Claim 4
Dependent Claim
102 words
A rotary engine comprising a stator having side plates each with an axial opening; a drive shaft extending through the stator side plate openings; a rotor, having side plates each with an axial circular opening, for oscillative rotation within said stator and about said shaft; and, at least at one side of said engine, a counterbalance unit rotating about said shaft and comprising a guide disc rotating within the rotor side plate opening and having an offcenter circular hub opening for rotation of said shaft therein, and a counterbalance weight integral with said disc and disposed outwardly of said rotor side plate.
Claim 5
Dependent Claim
16 words
Engine of claim 2 wherein said counterbalance weight is disposed outwardly of said stator side plate.
References Cited (Backward Citations)
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |