US3776106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear to rotary motor
Assignee: Individual
•
Filing: 1972-04-07
•
Granted: 1973-12-04
•
Expires: 1992-04-07
Abstract
Abstract A rotary apparatus has a variety of applications as, for example, a shock absorbing coupling between driving and driven shafts, an apparatus for converting fluid inputs to the rotation of one or two shafts, an integrator for algebraically adding mechanical input signals and fluid input signals, etc. The apparatus comprises a piston within a fluid cylinder. The piston has two heads spaced apart with a skirt connecting the heads. One rotatable shaft extends through one end of the cylinder and one of the heads. A second rotatable shaft coaxial with the first extends through the other end of the cylinder and the other of the heads. Each shaft is connected by cam followers to cam slots to the piston skirt so that as the piston moves one direction in the cylinder it tends to rotate one shaft in one direction and the other shaft in the opposite direction and vice versa.
Inventors
- 👤 P Pish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:32
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/02; F15B15/06; F15B15/068; F16; F16D; F16D3/00; F16D3/02; F16D3/12; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18888; Y10T74/18984
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
213 words
A rotary apparatus comprising: a fluid cylinder having two closed ends and a barrel extending therebetween and about an axis; a first rotatable shaft extending through one of the ends with a first portion within the cylinder barrel and a second portion externally of the cylinder; a second rotatable shaft extending through the other of the ends with a first portion thereof within the cylinder barrel and a second portion thereof externally of the cylinder; a piston in said cylinder and movable in said cylinder barrel along said axis, said piston having skirt means; first connecting means within said cylinder barrel including a first cam member and a first cam follower member engaging the cam member, one of said members being secured to said skirt and the other of the members secured to the first shaft; and second connecting means within said cylinder barrel including a second cam member and a second cam follower member engaging the second cam member, one of said second members being secured to said skirt and the other of the second members secured to the second shaft; said cam members being elongated and angularly disposed with respect to said axis, the angular disposition of one cam member being opposite to the angular disposition of the other cam member.
Claim 2
Dependent Claim
213 words
A rotary apparatus comprising: a fluid cylinder having two closed ends and a barrel extending therebetween and about an axis; a first rotatable shaft extending through one of the ends with a first portion within the cylinder barrel and a second portion externally of the cylinder; a second rotatable shaft extending through the other of the ends with a first portion thereof within the cylinder barrel and a second portion thereof externally of the cylinder; a piston in said cylinder and movable in said cylinder barrel along said axis, said piston having skirt means; first connecting means within said cylinder barrel including a first cam member and a first cam follower member engaging the cam member, one of said members being secured to said skirt and the other of the members secured to the first shaft; and second connecting means within said cylinder barrel including a second cam member and a second cam follower member engaging the second cam member, one of said second members being secured to said skirt and the other of the second members secured to the second shaft; said cam members being elongated and angularly disposed with respect to said axis, the angular disposition of one cam member being opposite to the angular disposition of the other cam member.
Claim 3
Dependent Claim
35 words
An apparatus as set forth in claim 1, wherein said shafts each extend along said axis approximately to the middle of said barrel, and including means rotatably connecting the shafts at the adjacent ends thereof.
Claim 4
Dependent Claim
46 words
An apparatus as set forth in claim 2, wherein said piston has two heads spaced from each other along said axis with said skirt extending between the heads, said cylinder having fluid connections communicating with the interior of the barrel at each end of the cylinder.
Claim 5
Dependent Claim
52 words
An apparatus as set forth in claim 3, wherein said skirt has two slots therein with the skirt at the sides of the slots defining said cam members, said cam follower members being in said slots, and including arms extending radially between the shafts and the follower members to secure them together.
Claim 6
Dependent Claim
78 words
An apparatus as set forth in claim 4, wherein there are two of said first cam follower members for the first shaft and positioned 180* apart about the first shaft, there are first cam members for each of the first cam follower members, there are two of said second cam follower members for the second shaft and positioned 180* apart about the second shaft, and there are second cam members for each of the second cam follower members.
Claim 7
Dependent Claim
34 words
An apparatus as set forth in claim 5, including ratchet means interconnecting the first shaft and one of the ends permitting said first shaft to rotate only in a given direction about said axis.
Claim 8
Dependent Claim
35 words
An apparatus as set forth in claim 6, including ratchet means interconnecting the second shaft and The other of the ends permitting said second shaft to rotate only in said given direction about said axis.
Claim 9
Dependent Claim
103 words
An apparatus as set forth in claim 1, wherein each of said ends has a fluid connection therein communicating with the interior of the barrel at the respective end of the cylinder, said ends each have an external face with a cavity therein generally cylindrical about the respective shaft, said cavity having a projection at one side of its generally cylindrical configuration, the second portions of said shafts being generally circular about said axis and having an irregularity therein lying within the respective cavity, and means at each end, positioned within the respective cavity and interengaging the respective end and the respective shaft.
Claim 10
Dependent Claim
34 words
An apparatus as set forth in claim 8, wherein said means at the one of the ends is a ratchet permitting the first shaft to rotate only in a given direction about said axis.
Claim 11
Dependent Claim
34 words
An apparatus as set forth in claim 9, wherein said means at the other of the ends is a ratchet permitting the second shaft to rotate only in said given direction about the axis.
Claim 12
Dependent Claim
30 words
An apparatus as set forth in claim 8, wherein said means at the one of the ends is a lock plate preventing rotation of the first shaft in either direction.
Claim 13
Dependent Claim
80 words
An apparatus as set forth in claim 1, wherein each end has an annular recess on the side thereof adjacent said barrel, the adjacent end of the barrel extending into the recess and said adjacent side of the end being within the barrel, an O-ring at each end between the end and the barrel and forming a seal therebetween, said barrel being a tubular sleeve, and means externally of the barrel holding the ends against movement away from each other.
Claim 14
Dependent Claim
56 words
An apparatus as set forth in claim 12, including engaging means between the respective ends and the ends of the barrel to prevent rotation between the same, said means externally of the barrel being a plurality of bolts at spaced positions about said axis and parallel thereto, said ends having openings through which said bolts extend.
Claim 15
Dependent Claim
28 words
An apparatus as set forth in claim 13, wherein said piston has two heads spaced from each other along said axis with said skirt extending between the heads.
Claim 16
Dependent Claim
19 words
An apparatus as set forth in claim 3, wherein one of said heads is releasably connected to said skirt.
Claim 17
Dependent Claim
18 words
An apparatus as set forth in claim 15, including a vent through said barrel midway between said ends.
Claim 18
Dependent Claim
26 words
An apparatus as set forth in claim 3, wherein said shafts respectively extend through said heads, and including O-rings between each head and the respective shaft.
Claim 19
Dependent Claim
20 words
A combination comprising the apparatus of claim 1 connected as a coupling between a driving means and a driven means.
Claim 20
Dependent Claim
32 words
A combination as set forth in claim 18 wherein said apparatus has fluid connections communicating with each end of said barrel, and including fluid source and exhaust means communicating with said connections.
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |