US3901630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid motor, pump or the like having inner and outer fluid displacement means
Assignee: Individual
•
Filing: 1974-03-07
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Granted: 1975-08-26
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Expires: 1994-03-07
Abstract
Abstract Improved fluid-mechanical and mechanical-fluid energy translation devices, such as fluid motors, pumps and certain actuators, meters, couplers and the like of the type having an orbital member disposed between a rotor element and a stator element and coupled with one of the elements by fluid displacement means and with the other element by gear means, are provided by employing therein a plurality of eccentric means for positively but shiftably mounting the member upon the element to which it is coupled by fluid displacement means in manner restricting relative motion between the member and the lastmentioned element to relative orbital motion. The element upon which the member is thus mounted may be either a rotor or a stator element and may be either the inner or the outer of the elements in various embodiments of devices incorporating the invention. The eccentric means, which are essentially cranks or shafts with offset axes, significantly are alone sufficient to accomplish the positive, shiftable mounting of the member and the restriction of same to relative orbital motion and to do so quite independently of any other fluid and mechanical couplings that may exist between the member and the elements in various particular forms of devices. The preferred embodiment also provides a further improvement in devices of this type employing vanes to define fluid displacement chambers by arranging the parts to maintain the pair of vanes bounding each chamber parallel to each other throughout the operating cycle, thereby maintaining the chordal transverse cross-sectional area of each chamber substantially constant throughout such cycle. The devices embodying the invention are characterized by increased efficiency and reliability, reduced wear on certain primary parts, and greater economy of manufacture by virtue of reduced strength and looser tolerance requirements in connection with certain primary parts.
Inventors
- 👤 John B Kilmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:47
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/10; F01; F01C; F01C1/00; F01C1/08; F01C1/10; F01C1/104; F01C1/30; F01C1/32; F01C1/324; F01C1/328; F01C1/332; F01C1/336; F01C1/38; F01C1/39; F01C17/00; F01C17/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
428 words
In a device of the class including fluid motors, pumps and certain activators, meters, couplers and the like, in which energy is translated from fluid to mechanical or from mechanical to fluid manifestations thereof, the combination of: a pair of elements, said elements being relatively movable with respect to each other; means for supporting said elements for relative rotational movement therebetween; a member, said member being relatively movable with respect to each of said elements respectively; first fluid displacement means for effecting a fluid coupling between said member and one of said elements at a plurality greater than two of zones between said member and said one element, the effective volumes of said zones being individually variable and at any time dependent upon the relative position of said member and said one element; said first fluid displacement means including means for effecting fluid ingress and egress connections with said zones in a predermined order for the selective introduction or removal of fluid; means for effecting both fluid and mechanical couplings between said member and the other of said elements, said coupling means including interengaging epicyclic gear means having cooperating tooth means on said member and said other element respectively, said tooth means on said member having a different number of teeth than said tooth means on said other element to provide a mechanical gear ratio different from unity between said member and said other element, said gear means forming a part of structure presenting second fluid displacement means including a plurality greater than two of fluid displacement chambers between said member and said other element, the effective volumes of said chambers being individually variable and at any given time dependent upon the relative positions of said member and said other element, said second fluid displacement means additionally including means for selectively effecting fluid ingress and egress connections with said chambers in a predetermined order for the selective introduction or removal of fluid; and further means, separate from and operably sufficient independently of both of said fluid displacement means and said gear means, for supporting said member and for limiting said predetermined movements to relative orbital movement between said member and said one element and to relative orbital and rotational movements between said member and said other element, said further means providing said support for the member and said limitation of relative movement between the member and the respective elements without reliance upon mechanical forces transmitted through said tooth means and comprising a plurality greater than two of spaced eccentric crank means intercoupling said member and said one element.
Claim 2
Dependent Claim
428 words
In a device of the class including fluid motors, pumps and certain activators, meters, couplers and the like, in which energy is translated from fluid to mechanical or from mechanical to fluid manifestations thereof, the combination of: a pair of elements, said elements being relatively movable with respect to each other; means for supporting said elements for relative rotational movement therebetween; a member, said member being relatively movable with respect to each of said elements respectively; first fluid displacement means for effecting a fluid coupling between said member and one of said elements at a plurality greater than two of zones between said member and said one element, the effective volumes of said zones being individually variable and at any time dependent upon the relative position of said member and said one element; said first fluid displacement means including means for effecting fluid ingress and egress connections with said zones in a predermined order for the selective introduction or removal of fluid; means for effecting both fluid and mechanical couplings between said member and the other of said elements, said coupling means including interengaging epicyclic gear means having cooperating tooth means on said member and said other element respectively, said tooth means on said member having a different number of teeth than said tooth means on said other element to provide a mechanical gear ratio different from unity between said member and said other element, said gear means forming a part of structure presenting second fluid displacement means including a plurality greater than two of fluid displacement chambers between said member and said other element, the effective volumes of said chambers being individually variable and at any given time dependent upon the relative positions of said member and said other element, said second fluid displacement means additionally including means for selectively effecting fluid ingress and egress connections with said chambers in a predetermined order for the selective introduction or removal of fluid; and further means, separate from and operably sufficient independently of both of said fluid displacement means and said gear means, for supporting said member and for limiting said predetermined movements to relative orbital movement between said member and said one element and to relative orbital and rotational movements between said member and said other element, said further means providing said support for the member and said limitation of relative movement between the member and the respective elements without reliance upon mechanical forces transmitted through said tooth means and comprising a plurality greater than two of spaced eccentric crank means intercoupling said member and said one element.
Claim 3
Dependent Claim
28 words
The iNvention of claim 1, wherein the rotational axes of said crank means are parallel to and spaced away from the axis of relative rotation of said elements.
Claim 4
Dependent Claim
21 words
The invention of claim 1, wherein said one element is a non-rotating stator, and said other element is a rotating rotor.
Claim 5
Dependent Claim
27 words
The invention of claim 1, wherein said elements are concentric about their axis of relative rotation, and said member is generally annular and disposed between said elements.
Claim 6
Dependent Claim
51 words
The invention of claim 1, wherein said one element is part of an housing structure, said other element is an inner gerotor gear provided with external tooth means, and said member is an outer gerator gear provided with internal tooth means engageable with said external tooth means of said other element.
Claim 7
Dependent Claim
89 words
The invention of claim 1, wherein said zones and said chambers are disposed on radially opposite faces of said member and there is provided means for successively activating said first fluid displacement means with pressurized fluid, means for successively activating said second fluid displacement means with pressurized fluid, and means for synchronizing the activation of said first and second fluid displacement means for cooperative application of their respective and opposing forces to shift said member in an orbital path relative to said elements and thereby relatively rotate said elements.
Claim 8
Dependent Claim
21 words
In a device as set forth in claim 1, wherein there are an equal number of said zones and said chambers.
Claim 9
Dependent Claim
25 words
In a device as set forth in claim 7, wherein the volumes of the individual zones vary oppositely to the volumes of corresponding individual chambers.
Claim 10
Dependent Claim
37 words
In a device as set forth in claim 8, wherein is provided means responsive to relative orbital movement between said member and said elements for controlling the flow of fluid to and from individual zones and chambers.
Claim 11
Dependent Claim
307 words
A combined radial chamber and gerotor, double and opposed displacement type, low speed, high torque, internal transmission, fluid motor comprising: an inner machine element having a central axis and a radially outwardly facing surface; and outer machine element having a generally annular, radially inwardly facing surface of substantially greater diameter than said outwardly facing surface of said inner element; means for supporting said elements for relative rotation about said axis with said inwardly facing surface of said outer element concentric to said axis of said inner element and in spaced apart, circumscribing relationship to said outwardly facing surface of said inner element to present a generally annular space between said elements; an intermediate ring member having radially inner and outer surfaces and shiftably disposed in said space between said surfaces of said inner and outer elements; epicyclic gear means, including a number of teeth on said outwardly facing surface of said inner element and a greater number of cooperating teeth on the inner surface of said intermediate member, operably coupling said member with said inner element; said gear means forming a part of structure presenting first fluid displacement means operably coupling said member with said outwardly facing surface of said inner element at a plurality greater than two of zones spaced about the inner surface of said member; second fluid displacement means operably coupling said member with said inwardly facing surface of said outer element at a plurality greater than two of zones spaced about the outer surface of said member; means for activating said first and second fluid displacement means in opposed synchronization to shift said member relative to said elements; and a plurality of eccentric crank means intercoupling said member with said outer element to prevent relative rotation therebetween and to limit shifting movement of said member relative to said outer element to orbital motion.
Claim 12
Dependent Claim
307 words
A combined radial chamber and gerotor, double and opposed displacement type, low speed, high torque, internal transmission, fluid motor comprising: an inner machine element having a central axis and a radially outwardly facing surface; and outer machine element having a generally annular, radially inwardly facing surface of substantially greater diameter than said outwardly facing surface of said inner element; means for supporting said elements for relative rotation about said axis with said inwardly facing surface of said outer element concentric to said axis of said inner element and in spaced apart, circumscribing relationship to said outwardly facing surface of said inner element to present a generally annular space between said elements; an intermediate ring member having radially inner and outer surfaces and shiftably disposed in said space between said surfaces of said inner and outer elements; epicyclic gear means, including a number of teeth on said outwardly facing surface of said inner element and a greater number of cooperating teeth on the inner surface of said intermediate member, operably coupling said member with said inner element; said gear means forming a part of structure presenting first fluid displacement means operably coupling said member with said outwardly facing surface of said inner element at a plurality greater than two of zones spaced about the inner surface of said member; second fluid displacement means operably coupling said member with said inwardly facing surface of said outer element at a plurality greater than two of zones spaced about the outer surface of said member; means for activating said first and second fluid displacement means in opposed synchronization to shift said member relative to said elements; and a plurality of eccentric crank means intercoupling said member with said outer element to prevent relative rotation therebetween and to limit shifting movement of said member relative to said outer element to orbital motion.
Claim 13
Dependent Claim
33 words
The invention of claim 10, wherein said outer element is part of an outer housing strUcture, and said inner element is a rotatable rotor carried by a shaft journalled in said housing structure.
Claim 14
Dependent Claim
40 words
The invention of claim 10, wherein said first fluid displacement means, said epicyclic gear means, and said teeth on the ouwardly facing surface of the inner element and the inner surface of the intermediate member are of the gerotor type.
Claim 15
Dependent Claim
18 words
The invention of claim 12, wherein said second fluid displacement means are of the vane-separated, radial chamber type.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |