US3609071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vanes for fluid power converter
Assignee: UNITED HYDRAULICS Inc
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Filing: 1969-12-10
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Granted: 1971-09-28
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Expires: 1989-12-10
Abstract
Abstract A self-pressurizing reversible vane for use in a fluid pump or motor in which the width of the vane in a radial cross section is less than the width of the slot thereby allowing fluid pressure to flow into the vane-receiving slot and around the vane to act on the bottom of the vane to provide a self-loading action. The vane having sides contoured to coact with and seal with the sides of the slot and freely movable sideways in the slot thereby allowing the pump or motor to reverse. A vane being teardrop shaped in cross section and having straight sides with rounded ends with the small end extending out of the slot thereby reducing the friction of the pressure-loaded vane. In fluid motors and pumps having vane valve elements in both the stator and rotor interaction noise and interference between the vanes may be reduced by placing the longitudinal axis of the vanes on at least one of the rotor and stator at an angle to a radially extending plane through the axis.
Inventors
- 👤 Robinson W Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:56
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C21/00; F01C21/08; F01C21/0809
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
In a fluid converter having a rotor member and a stator member, the members being rotated one with respect to the other with an annular fluid space therebetween, at least one of the members including a plurality of radially extending vanereceiving slots, the improvement in a vane positioned in each slot comprising, said vane in a radial cross section being of a teardrop shape having straight sides tapered relative to each other and a large first end and a small second end, the first end being positioned in the slot whereby the vane is free to rotate about the first end in the slot to allow the straight sides to coact with the sides of the slot and seal in either direction to allow reversal of the power converter, fluid passageway extending from the annular space on each side of the vane to the first end for providing radially pressure loading against the other member.
Claim 2
Dependent Claim
155 words
In a fluid converter having a rotor member and a stator member, the members being rotated one with respect to the other with an annular fluid space therebetween, at least one of the members including a plurality of radially extending vanereceiving slots, the improvement in a vane positioned in each slot comprising, said vane in a radial cross section being of a teardrop shape having straight sides tapered relative to each other and a large first end and a small second end, the first end being positioned in the slot whereby the vane is free to rotate about the first end in the slot to allow the straight sides to coact with the sides of the slot and seal in either direction to allow reversal of the power converter, fluid passageway extending from the annular space on each side of the vane to the first end for providing radially pressure loading against the other member.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 including, spring means in each slot yieldably urging said vane radially out of said slot.
Claim 4
Dependent Claim
35 words
The apparatus of claim 1 wherein said fluid passageways are provided around the side of the vanes by providing a sufficient clearance between the vane and the side of the slot for passage of fluid.
Claim 5
Dependent Claim
33 words
The apparatus of claim 1 wherein said fluid passageways include at least one passageway through the vane from each straight side at a point spaced from the second end to said first end.
Claim 6
Dependent Claim
20 words
The apparatus of claim 4 including, spring means in each slot yieldably urging said vane radially out of said slot.
Claim 7
Dependent Claim
79 words
In a fluid power converter having a rotor member and a stator member, the members being rotatable one with respect to the other with an annular fluid space therebetween, both of said members including a plurality of radially extending slots each receiving a vane therein, the improvement in the vanes comprising, the longitudinal axis of the vanes in at least one of the members being at an angle to the radial extending plane through the axis of the converter.
Claim 8
Dependent Claim
79 words
In a fluid power converter having a rotor member and a stator member, the members being rotatable one with respect to the other with an annular fluid space therebetween, both of said members including a plurality of radially extending slots each receiving a vane therein, the improvement in the vanes comprising, the longitudinal axis of the vanes in at least one of the members being at an angle to the radial extending plane through the axis of the converter.
Claim 9
Dependent Claim
61 words
The apparatus of claim 6 wherein the longitudinal axis of the slots in the rotor are at an angle to the radial extending plane of the converter, and the longitudinal axis of the vanes in the stator are at an angle to the radial extending plane of the converter, but in an opposite direction to the angle of the rotor vanes.
Claim 10
Dependent Claim
188 words
In a fluid power converter having a rotor member and a stator member, the members being rotatable one with respect to the other with an annular fluid space therebetween, both of said members including a plurality of radially extending slots each receiving a vane therein, the improvement in said vane comprising, said vane in a radial cross section being of a width sufficiently less than the width of the slot for allowing fluid pressure from the annular space to flow into the slot and around the vane and act on the bottom of the vane for providing radially outward pressure loading against the other member, said vanes having sides contoured to coact with the sides of the slot to seal therewith when engaging, said vane being free to move in the slot in either sideways direction whereby either side of the vane may be brought into contact with a side of the slot thereby allowing the converter to reverse, and the longitudinal axis of the vanes in at least one of the members being at an angle to the radial extending plane through the axis of the converter.
Claim 11
Dependent Claim
188 words
In a fluid power converter having a rotor member and a stator member, the members being rotatable one with respect to the other with an annular fluid space therebetween, both of said members including a plurality of radially extending slots each receiving a vane therein, the improvement in said vane comprising, said vane in a radial cross section being of a width sufficiently less than the width of the slot for allowing fluid pressure from the annular space to flow into the slot and around the vane and act on the bottom of the vane for providing radially outward pressure loading against the other member, said vanes having sides contoured to coact with the sides of the slot to seal therewith when engaging, said vane being free to move in the slot in either sideways direction whereby either side of the vane may be brought into contact with a side of the slot thereby allowing the converter to reverse, and the longitudinal axis of the vanes in at least one of the members being at an angle to the radial extending plane through the axis of the converter.
Claim 12
Dependent Claim
43 words
The apparatus of claim 8 wherein the longitudinal axis of the vanes in the second of said members are at an angle to the radial extending plane of the converter, but in an opposite direction to the angle of the first member vanes.
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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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |