Patent US2588549A successfully refreshed from Google Patents.
US4044629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating piston machine
Assignee: Individual
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Filing: 1975-12-29
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Granted: 1977-08-30
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Expires: 1995-12-29
Abstract
Abstract A reciprocating piston engine, pump or compressor including a crank-shaft having a crank-pin offset laterally from the axis of rotation of the crank-shaft, a connecting-rod pivotally-mounted on the crank-pin and pivotally-connected at the end thereof remote from the crank-pin to a piston, the axis of pivoting of the connecting-rod on the crank-pin being offset laterally from the longitudinal axis of the crank-pin, a non-rotatable gear mounted co-axially of the crank-shaft axis of rotation and a rotatable gear wheel mounted co-axially on the crank-pin for rotation thereon and in mesh with said non-rotatable gear, the connecting-rod being mounted on the rotatable gear for pivoting about an axis offset laterally from the longitudinal axis of the crank-pin, whereby the axis of pivoting of the connecting-rod on the crank-pin follows a predetermined locus as the crank-shaft is rotated.
Inventors
- 👤 John Michael Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:37
CPC Classifications
F; F16; F16H; F16H21/00; F16H21/10; F16H21/16; F16H21/18; F16H21/22; F16H21/30; F02; F02B; F02B41/00; F02B41/02; F02B41/04; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2162
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
142 words
A reciprocating piston machine including a cylinder, a piston reciprocatable therein, a crank-shaft, a crank-pin offset laterally from the axis of rotation of said crank-shaft, a connecting-rod pivotally-mounted on said crank-pin and pivotally-connected at the end thereof remote from said crank-pin to said piston, the axis of pivoting of said connecting-rod on said crank-pin offset laterally from the longitudinal axis of said crank-pin, and means constraining the axis of pivoting of said connecting-rod on said crank-pin to follow a predetermined locus as said crank-shaft is rotated, said constraining means comprising a non-rotatable gear mounted co-axially of the crank-shaft axis of rotation and a rotatable gear wheel mounted co-axially on said crank-pin for rotation thereon and in mesh with said non-rotatable gear, said connecting-rod mounted on said rotatable gear to pivot about an axis offset laterally from the longitudinal axis of said crank-pin.
Claim 2
Dependent Claim
142 words
A reciprocating piston machine including a cylinder, a piston reciprocatable therein, a crank-shaft, a crank-pin offset laterally from the axis of rotation of said crank-shaft, a connecting-rod pivotally-mounted on said crank-pin and pivotally-connected at the end thereof remote from said crank-pin to said piston, the axis of pivoting of said connecting-rod on said crank-pin offset laterally from the longitudinal axis of said crank-pin, and means constraining the axis of pivoting of said connecting-rod on said crank-pin to follow a predetermined locus as said crank-shaft is rotated, said constraining means comprising a non-rotatable gear mounted co-axially of the crank-shaft axis of rotation and a rotatable gear wheel mounted co-axially on said crank-pin for rotation thereon and in mesh with said non-rotatable gear, said connecting-rod mounted on said rotatable gear to pivot about an axis offset laterally from the longitudinal axis of said crank-pin.
Claim 3
Dependent Claim
31 words
A reciprocating piston machine as claimed in claim 1 in which said non-rotatable gear is an annular gear having internal teeth in mesh with external teeth on said rotatable gear wheel.
Claim 4
Dependent Claim
27 words
A reciprocating piston machine as claimed in claim 1 in which said non-rotatable gear has external teeth in mesh with external teeth on said rotatable gear wheel.
Claim 5
Dependent Claim
33 words
A reciprocating piston machine as claimed in claim 1 in which said constraining means is adjustable to alter the lengths of the respective strokes of said piston during a cycle of said machine.
Claim 6
Dependent Claim
66 words
A reciprocating piston machine as claimed in claim 4 in which said non-rotatable gear is adjustable circumferentially to effect circumferential adjustment of said rotatable gear wheel about said crank-pin axis and hence the distance by which the axis of pivoting of said connecting-rod is offset laterally from the longitudinal axis of said crank-pin, said distance defining the eccentricity of said connecting-rod with respect to said crank-pin.
Claim 7
Dependent Claim
20 words
A reciprocating piston machine as claimed in claim 5 in which said adjustment is performed when said crank-shaft is stationary.
Claim 8
Dependent Claim
18 words
A reciprocating piston machine as claimed in claim 5 in which said adjustment is effected by manual adjustment.
Claim 9
Dependent Claim
30 words
A reciprocating piston machine as claimed in claim 5 in which said adjustment is effected automatically with respect to an operational condition of the machine during rotation of said crank-shaft.
Claim 10
Dependent Claim
22 words
A reciprocating piston machine as claimed in claim 4 in which said crank-pin is adjustable circumferentially relatively to said rotatable gear wheel.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |