US3760694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-cylinder crankshaft machine, in particular a reciprocating pump or compressor
Assignee: Individual
•
Filing: 1971-10-27
•
Granted: 1973-09-25
•
Expires: 1991-10-27
Abstract
Abstract The main object of the invention is a multi-cylinder crankshaft engine the crankshaft of which is non-positively supported between its bearings on the side opposite to the engine pistons, for instance by spring means and preferably by a fluid pressure varying substantially proportionately to the variation of the force exerted by the engine pistons to the crankshaft.
Inventors
- 👤 W Lieb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:36
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/006; F01; F01B; F01B9/00; F01B9/02; F04B1/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18208
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
99 words
A multi-cylinder piston machine comprising a machine housing; a plurality of cylinders fixed to said housing; a plurality of working pistons reciprocably arranged in said cylinders; a crankshaft; two end bearings turnably mounting said crankshaft in said machine housing; transmission means for transmitting power between said crankshaft and said working pistons; said transmission means applying a pressure force in one direction to said crankshaft; and yieldable pressure means for applying to said crankshaft a force in a direction opposite to said one direction to at least partly compensate the pressure force applied by said transmission means to said crankshaft.
Claim 2
Dependent Claim
99 words
A multi-cylinder piston machine comprising a machine housing; a plurality of cylinders fixed to said housing; a plurality of working pistons reciprocably arranged in said cylinders; a crankshaft; two end bearings turnably mounting said crankshaft in said machine housing; transmission means for transmitting power between said crankshaft and said working pistons; said transmission means applying a pressure force in one direction to said crankshaft; and yieldable pressure means for applying to said crankshaft a force in a direction opposite to said one direction to at least partly compensate the pressure force applied by said transmission means to said crankshaft.
Claim 3
Dependent Claim
36 words
A machine as defined in claim 1, wherein said crankshaft has at least two crank pins and a crank arm arranged between and connecting said crank pins, said yieldable pressure means acting on said crank arm.
Claim 4
Dependent Claim
40 words
A machine as defined in claim 1, wherein said crankshaft has at least three crank pins with a crank arm between each two of said crank pins, said yieldable pressure means acting at least on one of said crank arms.
Claim 5
Dependent Claim
15 words
A machine as defined in claim 1, wherein said yieldable pressure means comprise spring means.
Claim 6
Dependent Claim
35 words
A machine as defined in claim 1, wherein said yieldable pressure means comprise a movable member arranged to be pressed against said crankshaft, and means for pressing this member by pressure fluid against the crankshaft.
Claim 7
Dependent Claim
78 words
A machine as defined in claim 1, wherein said machine is a pump and wherein said yieldable pressure means comprise movable means arranged to be pressed against said crankshaft, and including pressure responsive means subjected to and movable in accordance with the fluid pressure produced by the pump, and mechanical transmission means between said movable means and said pressure responsive means for pressing said movable means against said crankshaft in dependence upon fluid pressure produced by said pump.
Claim 8
Dependent Claim
91 words
A machine as defined in claim 1, and including an oil sump in said housing beneath said crankshaft, said crankshaft having a portion having a cylindrical outer surface coaxial with the axis of said end bearings and dipping in said oil sump, said yieldable pressure means comprising a member engaging with a surface thereof said cylindrical surface, said member surface and said cylindrical surface defining between themselves a channel tapering in direction of rotation of said crankshaft for the lubricating oil carried by the crankshaft portion out of the oil sump.
Claim 9
Dependent Claim
52 words
A machine as defined in claim 1, wherein said crankshaft comprises a portion coaxial with the axis of said end bearings and having a cylindrical outer surface, said yieldable pressure means comprising a shoe adapted to engage said cylindrical surface and extending about the same through an angle of less than 180*.
Claim 10
Dependent Claim
37 words
A machine as defined in claim 1, wherein said crankshaft comprises a portion coaxial with said end bearings and having a cylindrical outer surface, said yieldable pressure means comprising an annular member closely surrounding said cylindrical portion.
Claim 11
Dependent Claim
30 words
A machine as defined in claim 1, and including guide means fastened to said housing opposite said cylinders, said yieldable pressure means comprising a member guided in said guide means.
Claim 12
Dependent Claim
90 words
A machine as defined in claim 1, wherein said crankshaft has a portion coaxial with said end bearings and having an external cylindrical surface, said yieldable pressure comprising an annular member closely surrounding said cylindrical surface, a pistonlike lug integral with said annular member and projecting therefrom in said opposite direction, a guide cylinder fixed to said housing, said lug having an end portion fluidtightly guided in said guide cylinder, a bore extending through said lug and said annular member, and a fluid filling said guide cylinder and said bore.
Claim 13
Dependent Claim
64 words
A machine as defined in claim 5, wherein said machine is a pump, and including means for transmitting pressure fluid from at least one of said cylinders to said means for pressing said member by pressure fluid against said crankshaft so that said yieldable pressure means will exert on said crankshaft a compensating force in dependence on the fluid pressure in said one cylinder.
Claim 14
Dependent Claim
47 words
A machine as defined in claim 6, wherein said movable means comprise a shoe in contact with said crankshaft, a lever engaging said shoe and being pivoted at one end to said machine housing, said mechanical transmission means being connected to the other end of said lever.
Claim 15
Dependent Claim
30 words
A machine as defined in claim 8, and including means supporting said shoe against movement in the direction of rotation of said crankshaft and in axial direction of the latter.
Claim 16
Dependent Claim
47 words
A machine as defined in claim 10, wherein said guide means comprise a guide cylinder and said member a piston-like pressure member reciprocable in said guide cylinder, and including a source of pressure fluid communicating with said guide cylinder for pressing said pressure member against said crankshaft.
Claim 17
Dependent Claim
24 words
A machine as defined in claim 11, and including spring means for pressing said annular member in said opposite direction against said cylindrical surface.
Claim 18
Dependent Claim
42 words
A machine as defined in claim 12, wherein said yieldable pressure means comprise a piston-like pressure member, said means for transmitting pressure fluid transmit said pressure fluid to said piston-like member for pressing the latter in said opposite direction against said crankshaft.
Claim 19
Dependent Claim
40 words
A machine as defined in claim 12, and including a pressure chamber communicating with said cylinders, said means for transmitting pressure fluid to said means for pressing said member by pressure fluid against said crankshaft communicating with said pressure chamber.
Claim 20
Dependent Claim
56 words
A machine as defined in claim 14, wherein said support means comprise two stay parts fixed to said housing to prevent movement of said shoe in the direction of rotation of said crankshaft and lug arrangements on both sides of said stay parts for supporting said shoe against movement in the direction of the crankshaft axis.
Claim 21
Dependent Claim
27 words
A machine as defined in claim 16, wherein said spring means comprise a compression spring in said guide cylinder and engaging the end portion of said lug.
References Cited (Backward Citations)
US2455330A
Cited
US2908138A
Cited
US2650545A
Cited
US2827859A
Cited
US3053195A
Cited
US3468190A
Cited
US3570372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |