US3709635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic coupling
Assignee: BorgWarner Ltd
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Filing: 1970-09-18
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Granted: 1973-01-09
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Expires: 1990-09-18
Abstract
Abstract A hydraulic coupling member including an outer hollow parttoroidal shell and an internal hollow part-toroidal core ring and blading between and connected to the shell and core ring, the blading being provided by an undulating element with the undulations of generally triangular section providing back-toback triangular section flow channels. The undulating element can be cast or stamped in a single piece, or formed segmentally and secured together, and then connected to the shell and core ring.
Inventors
- 👤 J Ivey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/006; F; F03; F03B; F03B3/00; F03B3/12; F16; F16D; F16D33/00; F16D33/18; F16D33/20; F16H; F16H41/00; F16H41/24; F16H41/28; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
In a hydraulic coupling member rotatable about an axis, an outer hollow part-toroidal shell, an inner hollow part-toroidal shell within said outer shell, and an annular continuous blading element between and connected to said shells, said blading element being provided with undulations comprising angularly disposed walls defining generally triangular sections to create V-section curved fluid flow channels extending generally radially of said axis of rotation, said walls intersecting to provide curved ridges extending generally radially of said axis of rotation and said ridges being alternately connected to said inner and outer shells.
Claim 2
Dependent Claim
92 words
In a hydraulic coupling member rotatable about an axis, an outer hollow part-toroidal shell, an inner hollow part-toroidal shell within said outer shell, and an annular continuous blading element between and connected to said shells, said blading element being provided with undulations comprising angularly disposed walls defining generally triangular sections to create V-section curved fluid flow channels extending generally radially of said axis of rotation, said walls intersecting to provide curved ridges extending generally radially of said axis of rotation and said ridges being alternately connected to said inner and outer shells.
Claim 3
Dependent Claim
28 words
In a hydraulic coupling member as set forth in claim 1 wherein the triangular-section undulations of the blading element are disposed to provide back-to-back uniformly spaced V-section channels.
Claim 4
Dependent Claim
42 words
In a hydraulic coupling member as set forth in claim 1 in which the angularly-arranged walls defining the exit end of each fluid flow channel are at a more Acute angle than the walls defining the entry end of each fluid channel.
Claim 5
Dependent Claim
26 words
In a hydraulic coupling member as set forth in claim 1 wherein the blading element is accordion-pleated in shape to provide said V-section fluid flow channels.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |