US3886805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crank gear for the conversion of a translational motion into rotation
Assignee: Individual
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Filing: 1974-04-09
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Granted: 1975-06-03
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Expires: 1994-04-09
Abstract
Abstract A crank gear for multicylinder engines having connecting rods rigidly attached to the pistons and journaled on a rotating planetary crankshaft which is eccentrically supported. An external gear is mounted on one of the crankpins and hobs on a stationary internal gear mounted concentrically with respect to the entire crank gear; the number of teeth on the internal gear being twice the number of teeth of the external gear.
Inventors
- 👤 Ivan Koderman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:19
CPC Classifications
F; F16; F16H; F16H21/00; F16H21/10; F16H21/16; F16H21/18; F16H21/36; F16H21/365; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18272
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
A crank gear for converting linear motion of at least two connecting rods arranged in a 90* relationship to each other and coupled together according to the Cardan principle into rotary motion comprising, a housing, an internal gear fixed within the housing, an eccentric planetary crankshaft within said housing, a crankpin on said crankshaft journaling each of said connecting rods, an external gear rigidly secured on said crankshaft which hobs with said internal gear, a guide wheel having a diameter equal to the pitch diameter of said external gear and concentric therewith, a flange on the guide wheel secured to said external gear, a butt shaft secured to and extending coaxially from said guide wheel, a flywheel eccentrically mounted on said butt shaft, means fixed to said housing concentric with said internal gear and surrounding said flywheel for journaling the flywheel and supporting said butt shaft, and gear means on the end of said butt shaft for take-off of power.
Claim 2
Dependent Claim
160 words
A crank gear for converting linear motion of at least two connecting rods arranged in a 90* relationship to each other and coupled together according to the Cardan principle into rotary motion comprising, a housing, an internal gear fixed within the housing, an eccentric planetary crankshaft within said housing, a crankpin on said crankshaft journaling each of said connecting rods, an external gear rigidly secured on said crankshaft which hobs with said internal gear, a guide wheel having a diameter equal to the pitch diameter of said external gear and concentric therewith, a flange on the guide wheel secured to said external gear, a butt shaft secured to and extending coaxially from said guide wheel, a flywheel eccentrically mounted on said butt shaft, means fixed to said housing concentric with said internal gear and surrounding said flywheel for journaling the flywheel and supporting said butt shaft, and gear means on the end of said butt shaft for take-off of power.
Claim 3
Dependent Claim
160 words
A crank gear for converting linear motion of at least two connecting rods arranged in a 90* relationship to each other and coupled together according to the Cardan principle into rotary motion comprising, a housing, an internal gear fixed within the housing, an eccentric planetary crankshaft within said housing, a crankpin on said crankshaft journaling each of said connecting rods, an external gear rigidly secured on said crankshaft which hobs with said internal gear, a guide wheel having a diameter equal to the pitch diameter of said external gear and concentric therewith, a flange on the guide wheel secured to said external gear, a butt shaft secured to and extending coaxially from said guide wheel, a flywheel eccentrically mounted on said butt shaft, means fixed to said housing concentric with said internal gear and surrounding said flywheel for journaling the flywheel and supporting said butt shaft, and gear means on the end of said butt shaft for take-off of power.
Claim 4
Dependent Claim
160 words
A crank gear for converting linear motion of at least two connecting rods arranged in a 90* relationship to each other and coupled together according to the Cardan principle into rotary motion comprising, a housing, an internal gear fixed within the housing, an eccentric planetary crankshaft within said housing, a crankpin on said crankshaft journaling each of said connecting rods, an external gear rigidly secured on said crankshaft which hobs with said internal gear, a guide wheel having a diameter equal to the pitch diameter of said external gear and concentric therewith, a flange on the guide wheel secured to said external gear, a butt shaft secured to and extending coaxially from said guide wheel, a flywheel eccentrically mounted on said butt shaft, means fixed to said housing concentric with said internal gear and surrounding said flywheel for journaling the flywheel and supporting said butt shaft, and gear means on the end of said butt shaft for take-off of power.
Claim 5
Dependent Claim
28 words
A crank gear as defined in claim 1 and further including reduction gear means in said housing in driven relation with the gear means on the butt shaft.
Claim 6
Dependent Claim
29 words
A crank gear as defined in claim 1, and further including engine valve means in driven engagement with said crankshaft on the end opposite said butt shaft power take-off.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |