US3584542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical driving
Assignee: Nutron Corp
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Filing: 1969-07-22
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Granted: 1971-06-15
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Expires: 1989-07-22
Abstract
Abstract A fixed member defining a first cam surface, a movable member defining a second cam surface, a movable piston support carrying at least two pistons each of which is mounted for movement relative to the piston support and engages the cam surfaces, and means for selectively forcing the pistons against the cam surfaces to cause movement of the movable member and piston support relative to the fixed member.
Inventors
- 👤 James M Denker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:59
CPC Classifications
F; F03; F03C; F03C1/00; F03C1/22; F03C1/24; F03C1/2407; F03C1/02; F03C1/04; F03C1/0403; F03C1/0409; F03C1/0431
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
74 words
A device comprising: a fixed cam defining a first cam surface; a movable cam defining a second cam surface; a movable piston support; a plurality of pistons mounted on said support for movement relative thereto, each of said pistons engaging said first cam surface and said second cam surface; and, means for selectively forcing said pistons against said cam surfaces to move said piston support and said movable cam relative to said fixed cam.
Claim 2
Independent Claim
74 words
A device comprising: a fixed cam defining a first cam surface; a movable cam defining a second cam surface; a movable piston support; a plurality of pistons mounted on said support for movement relative thereto, each of said pistons engaging said first cam surface and said second cam surface; and, means for selectively forcing said pistons against said cam surfaces to move said piston support and said movable cam relative to said fixed cam.
Claim 3
Dependent Claim
30 words
The device of claim 1 wherein each of said cam surfaces is closed and said movable cam and said piston support are mounted for rotation relative to said fixed cam.
Claim 4
Dependent Claim
41 words
The device of claim 2 wherein said first cam surface defines a plurality of identical cam cycles, said second cam surface defines a plurality of identical cam cycles, and said cycles of said first and second surfaces are of equal amplitude.
Claim 5
Dependent Claim
21 words
The device of claim 3 wherein the number of cycles defined by said first and second cam surfaces are not equal.
Claim 6
Dependent Claim
31 words
The device of claim 3 wherein the number of pistons mounted on said support equals the sum of the number of cycles defined by said first and said second cam surfaces.
Claim 7
Dependent Claim
42 words
The device of claim 3 wherein said pistons are regularly spaced at intervals of 360/(m+n) degrees where m is the number of cycles defined by said first cam surface and n is the number of cycles defined by said second cam surface.
Claim 8
Dependent Claim
38 words
The device of claim 1 wherein said pistons are balls and said cam surfaces, in cross section perpendicular to the direction of movement of said movable cam, have radii of curvature greater than the radius of said balls.
Claim 9
Dependent Claim
68 words
The device of claim 1 wherein said movable cam is mounted for rotation relative to said fixed cam, said piston support is mounted for rotation relative to said fixed cam and defines a plurality of spaced cylindrical bores, a piston is mounted in each of said bores for movement therein, and said means includes a fluid manifold for applying fluid under pressure to selected one of said bores.
Claim 10
Dependent Claim
46 words
The device of claim 8 wherein each of said cam surfaces is closed and defines a plurality of identical cam cycles, the amplitude of the cycles defined by said first cam surface being equal to the amplitude of the cycles defined by said second cam surface.
Claim 11
Dependent Claim
27 words
The device of claim 9 wherein said first cam surface defines m cycles, said second cam surface defines n cycles, and m is not equal to n.
Claim 12
Dependent Claim
16 words
The device of claim 10 wherein said pistons are regularly spaced at intervals of 350/(m+n) degrees.
Claim 13
Dependent Claim
67 words
The device of claim 8 wherein m is the number of cycles defined by said first cam surface and said fluid manifold includes a valving surface and 2m fluid conduits terminating in ports at said valving surface, said ports being regularly spaced at intervals of 350/2m degrees and alternate ones of said conduits being adapted for fluid connection to, respectively, a fluid inlet and a fluid outlet.
Claim 14
Dependent Claim
59 words
The device of claim 12 wherein n is the number of cycles defined by said second cam surface, and said piston support includes m+n bores and a valving surface in face-to-face engagement with the valving surface of said manifold defining m+n ports regularly spaced at intervals of 350/(m+n) degrees, each of said ports communicating with one of said bores.
Claim 15
Dependent Claim
41 words
The device of claim 9 wherein said movable cam rotates 1+(m/n) revolutions per revolution of said piston support, m being the number of cycles defined by said fixed cam and n being the number of cycles defined by said rotating cam.
Claim 16
Dependent Claim
10 words
The device of claim 9 wherein said pistons are balls.
Claim 17
Dependent Claim
34 words
The device of claim 15 wherein said cam surfaces, in cross section in planes including the axis of rotation of said piston support, have radii of curvature greater than the radius of said balls.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |