Patent US3631947A successfully refreshed from Google Patents.
US3631947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque-transmitting connection and method of making the same
Assignee: BorgWarner Ltd
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Filing: 1970-06-12
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Granted: 1972-01-04
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Expires: 1990-06-12
Abstract
Abstract A torque-transmitting connection and method of manufacture thereof, e.g. for an automatic transmission, in which first and second annular sheet metal cup-shaped members are formed by a combined sheet metal drawing and shearing operation, so that axially extending portions of each member have axial toothlike indentations formed therein. The indentations or the two members interengage to provide a torque-transmitting connection. One of the cup-shaped members may be provided with circumferentially spaced apertures in the axially extending portion, to receive a parking pawl to lock the transmission.
Inventors
- 👤 James Morrison Laing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:23
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/02; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; Y; Y10; Y10S; Y10S475/00; Y10S475/90; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19935
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
A transmission mechanism iNcluding axially displaced first and second gear elements, a first annular sheet metal part connected to one of said gear elements having an axially extending portion thereon having a series of axially extending toothlike indentations formed therein, a second annular sheet metal part connected to the other of said gear elements and having an axially extending portion thereon having a series of axially extending toothlike indentations formed therein for interengagement with the first said indentations to form a torque-transmitting connection between said gear elements through the medium of said sheet metal parts.
Claim 2
Dependent Claim
95 words
A transmission mechanism iNcluding axially displaced first and second gear elements, a first annular sheet metal part connected to one of said gear elements having an axially extending portion thereon having a series of axially extending toothlike indentations formed therein, a second annular sheet metal part connected to the other of said gear elements and having an axially extending portion thereon having a series of axially extending toothlike indentations formed therein for interengagement with the first said indentations to form a torque-transmitting connection between said gear elements through the medium of said sheet metal parts.
Claim 3
Dependent Claim
46 words
A transmission mechanism as claimed in claim 1 wherein a series of apertures is formed in one of said sheet metal parts extending around the circumference thereof adapted to be engaged by a stationary element and thereby act as a parking brake for said transmission mechanism.
Claim 4
Dependent Claim
59 words
A transmission mechanism as claimed in claim 2, wherein said axially extending portion has a free end and said axially extending indentations extend in an axial direction inwardly over only a part of said axially extending portion from said free end, and wherein said apertures are formed in the remainder of said axially extending portion and between said indentations.
Claim 5
Dependent Claim
42 words
A transmission mechanism as claimed in claim 2, wherein said gear elements and said annular sheet metal parts are mounted for rotation within a casing and wherein said stationary element comprises a parking pawl formed on an arm pivoted to said casing.
Claim 6
Dependent Claim
41 words
A transmission mechanism as claimed in claim 1 including a plurality of planetary gearsets, said first and second gear elements each being a member of one of said gearsets, and said torque-transmitting connection being arranged to transfer torque between said gearsets.
Claim 7
Dependent Claim
25 words
A transmission mechanism as claimed in claim 5 including an output shaft and wherein one of said gear elements is connected to said output shaft.
Claim 8
Dependent Claim
39 words
A transmission mechanism as claimed in claim 6, wherein said first annular sheet metal part comprises the planet gear carrier of one of said planetary gearsets and wherein said first annular sheet part is connected to said output shaft.
Claim 9
Dependent Claim
52 words
A transmission mechanism as claimed in claim 7, and further comprising a disc secured to said output shaft and provided with peripheral slots and a sheet metal intermediate member secured to said second annular sheet metal part, and axially extending tangs on said sheet metal intermediate member engaged in said peripheral slots.
Claim 10
Dependent Claim
54 words
A transmission mechanism as claimed in claim 1, wherein said first and second annular sheet metal parts are cup-shaped members each having an axially extending portion terminating in a free end, and wherein the cup-shaped members are assembled in face-to-face relation with the free end of one cup-shaped member within the other cup-shaped member.
Claim 11
Dependent Claim
91 words
A transmission mechanism including axially displaced first and second gear elements, a first annular sheet metal part connected to one of said gear elements and a second annular sheet metal part connected to the other of said gear elements, means interconnecting said first and second annular sheet metal parts to provide a torque-transmitting connection, and a series of apertures in one of said sheet metal parts extending around the circumference thereof adapted to be engaged by a stationary element and thereby to act as a parking brake for said transmission mechanism.
Claim 12
Dependent Claim
91 words
A transmission mechanism including axially displaced first and second gear elements, a first annular sheet metal part connected to one of said gear elements and a second annular sheet metal part connected to the other of said gear elements, means interconnecting said first and second annular sheet metal parts to provide a torque-transmitting connection, and a series of apertures in one of said sheet metal parts extending around the circumference thereof adapted to be engaged by a stationary element and thereby to act as a parking brake for said transmission mechanism.
References Cited (Backward Citations)
US2729110A
Cited
US3354536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |