US3778197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure device
Assignee: Individual
•
Filing: 1972-05-18
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Granted: 1973-12-11
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Expires: 1992-05-18
Abstract
Abstract A rotary motor includes a casing in which there is disposed a shaft mounted on an externally toothed gear. The shaft can rotate about its axis without orbital or planetating movement by the aid of an outer cylinder and cams provided in the interspace between the gear and outer cylinder and contacting them when the pressure fluid is introduced in the interspace to move the cams, cylinder and gear.
Inventors
- 👤 M Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:18
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/103
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
260 words
A fluid pressure device comprising A. a casing; B. a rotary shaft rotatably supported in the casing, 1. said shaft having a center and having rotary movement about the center; C. a gear mounted coaxially with the rotary shaft and having external teeth; D. a movable cylindrical member having an inner side, 1. said cylindrical member being located eccentrically with the gear to form an annular interspace between the inner side of the cylindrical member and the external teeth of the gear; E. conducting means for introducing the fluid pressure into the annular interspace and discharging it therefrom with the pressure so distributed as to move the gear and the cylindrical member; F. cam means provided in the annular interspace and having a cam periphery, 1. said cam periphery contacting the teeth of the gear and the inner side of the cylindrical member, 2. the cam means planetating the cylindrical member about the said center and rotating the gear about the center by introducing the fluid pressure into the annular intErspace and discharging it therefrom, 3. the cam means comprising a plurality of rollers having outer sides and inner sides, a. the outer sides of the rollers being contacted by the teeth of the gear and the inner side of the cylindrical member, and 4. a plurality of pins fixed to the casing and having outer sides, a. each pin being loosely inserted into a corresponding roller with the outer side contacting a part of the inner side of the roller, whereby the rotary shaft continuously rotates without orbital movement.
Claim 2
Dependent Claim
260 words
A fluid pressure device comprising A. a casing; B. a rotary shaft rotatably supported in the casing, 1. said shaft having a center and having rotary movement about the center; C. a gear mounted coaxially with the rotary shaft and having external teeth; D. a movable cylindrical member having an inner side, 1. said cylindrical member being located eccentrically with the gear to form an annular interspace between the inner side of the cylindrical member and the external teeth of the gear; E. conducting means for introducing the fluid pressure into the annular interspace and discharging it therefrom with the pressure so distributed as to move the gear and the cylindrical member; F. cam means provided in the annular interspace and having a cam periphery, 1. said cam periphery contacting the teeth of the gear and the inner side of the cylindrical member, 2. the cam means planetating the cylindrical member about the said center and rotating the gear about the center by introducing the fluid pressure into the annular intErspace and discharging it therefrom, 3. the cam means comprising a plurality of rollers having outer sides and inner sides, a. the outer sides of the rollers being contacted by the teeth of the gear and the inner side of the cylindrical member, and 4. a plurality of pins fixed to the casing and having outer sides, a. each pin being loosely inserted into a corresponding roller with the outer side contacting a part of the inner side of the roller, whereby the rotary shaft continuously rotates without orbital movement.
Claim 3
Dependent Claim
31 words
the cam means planetating the cylindrical member about the said center and rotating the gear about the center by introducing the fluid pressure into the annular intErspace and discharging it therefrom,
Claim 4
Dependent Claim
31 words
the cam means planetating the cylindrical member about the said center and rotating the gear about the center by introducing the fluid pressure into the annular intErspace and discharging it therefrom,
Claim 5
Dependent Claim
19 words
A fluid pressure device according to claim 1 wherein the teeth of the gear have a curbed tooth surface.
Claim 6
Dependent Claim
131 words
A fluid pressure device according to claim 1 wherein the conducting means comprises first fluid passing means formed in a connecting plate fixed to the casing, second and third fluid passing means formed in a sleeve mounted coaxially with the rotary shaft, and an inlet hole and outlet hole perforated in the wall of the casing, the second and third fluid passing means conducting the first fluid passing means to the inlet and outlet holes so that the pressure fluid is introduced into the annular interspace through the inlet hole, second fluid passing means and the part of the first fluid passing means and the pressure fluid in the annular interspace is discharged through the part of the first fluid passing means and third fluid passing means and the outlet hole.
Claim 7
Dependent Claim
38 words
the cam means comprising a plurality of rollers having outer sides and inner sides, a. the outer sides of the rollers being contacted by the teeth of the gear and the inner side of the cylindrical member, and
Claim 8
Dependent Claim
38 words
the cam means comprising a plurality of rollers having outer sides and inner sides, a. the outer sides of the rollers being contacted by the teeth of the gear and the inner side of the cylindrical member, and
Claim 9
Dependent Claim
45 words
a plurality of pins fixed to the casing and having outer sides, a. each pin being loosely inserted into a corresponding roller with the outer side contacting a part of the inner side of the roller, whereby the rotary shaft continuously rotates without orbital movement.
Claim 10
Dependent Claim
45 words
a plurality of pins fixed to the casing and having outer sides, a. each pin being loosely inserted into a corresponding roller with the outer side contacting a part of the inner side of the roller, whereby the rotary shaft continuously rotates without orbital movement.
Claim 11
Dependent Claim
130 words
A fluid pressure device according to claim 3 wherein the first fluid passing means consists of the same number of first holes as that of the rollers, one end of the first hole opening to the annular interspace and the other end opening to the side of the sleeve, second fluid passing means consists of a smaller number of second holes than that of the first holes, one end of the second hole opening to the side of the connecting plate and the other end opening to the inlet hole, and the third fluid passing means consists of the same number of third holes as the second holes, one end of the third hole opening to the side of the connecting plate and the other opening to the outlet hole.
References Cited (Backward Citations)
US1935096A
Cited
US2423507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |