Patent US5301222A successfully refreshed from Google Patents.
Patent US4958537A successfully refreshed from Google Patents.
US4958537A
Expired / Lapsed
US
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Transmission casing cover with tubular conduit cast in situ
Assignee: Saturn Corp
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Filing: 1990-02-20
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Granted: 1990-09-25
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Expires: 2010-02-20
Abstract
Abstract A novel cover (10) for one end of the casing within which a vehicular transmission is housed and a unique method for making the cover. The cover (10) has a metallic body portion (12) within which a unitary manifold (40) has been cast in situ. The manifold (40) incorporates a plurality of conduits (A-E) which have been preformed and conjoined into the unitary manifold (40) that is precisely disposed within a mold. Molten metal is admitted into the mold to encapsulate the manifold (40) within the metallic body portion (12) of the cover (10). After the cover (10) has been cast, with the manifold (40) encapsulated therein, the cover (10) is removed from the mold, and only a relatively modest amount of machining operations are required to complete the cover (10).
Inventors
- 👤 Rodney A. Diehl
- 👤 Robert L. Uhrman, Jr.
- 👤 Robert G. Bishop
- 👤 Donald B. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:41
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/0072; F; F16; F16H; F16H57/00; F16H57/02; F16H57/031; F16H61/00; F16H2057/02017; F16H2057/02039; F16H2057/02043; F16H2061/0046; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186; Y10T74/2189
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A cover in combination with a vehicle transmission casing, said cover comprising: a cast metallic body portion; said body portion having a plurality of port locations for interconnecting with a hydraulic system associated with the vehicle transmission; a plurality of conduits formed to predetermined configurations; a selected plurality of said formed conduits conjoined in a unitary manifold; said unitary manifold being encapsulated within said body portion of the cover; each said conduit within said manifold having opposed ends which communicate with selected port locations in said body portion to effect communication between said port locations.
Claim 2
Dependent Claim
95 words
A cover in combination with a vehicle transmission casing, said cover comprising: a cast metallic body portion; said body portion having a plurality of port locations for interconnecting with a hydraulic system associated with the vehicle transmission; a plurality of conduits formed to predetermined configurations; a selected plurality of said formed conduits conjoined in a unitary manifold; said unitary manifold being encapsulated within said body portion of the cover; each said conduit within said manifold having opposed ends which communicate with selected port locations in said body portion to effect communication between said port locations.
Claim 3
Dependent Claim
15 words
A cover, as set forth in claim 1, wherein: said body portion is cast aluminum.
Claim 4
Dependent Claim
14 words
A cover, as set forth in claim 1, wherein: said conduits are metal tubes.
Claim 5
Dependent Claim
14 words
A cover, as set forth in claim 3, wherein: said metallic tubes are steel.
Claim 6
Dependent Claim
21 words
A cover, as set forth in claim 1, wherein: said body portion is cast aluminum and the conduits are tubular steel.
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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) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |