US3913716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded friction article and method of assembly
Assignee: SINTERMET Corp 100 EAST BIG BEAVER ROAD SUITE 804 TROY MICHIGAN 48083 A CORP OF MICHIGAN
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Filing: 1974-04-04
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Granted: 1975-10-21
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Expires: 1994-04-04
Abstract
Abstract A friction article includes an apertured carrier plate having a plurality of friction pads mounted on either side. Each pad has a friction facing and a steel backing plate having an integrally formed button and projection. A pair of pads are placed on either side of a carrier plate with their button projections contacting within the aperture. This assembly is placed in a resistance welder with one backing plate spaced from the carrier plate. A pair of electrodes squeeze and pass current through the pads to effect a resistance weld of the projections until both backing plates are clamped to the carrier plate.
Inventors
- 👤 Daniel T Sedlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:11
CPC Classifications
F; F16; F16D; F16D69/00; F16D65/00; F16D65/02; F16D65/12; F16D65/122
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
90 words
A friction article comprising a carrier plate having a mounting aperture formed therein, a pair of friction devices having outer friction faces and inner mounting faces contacting opposite sides of the carrier plate and clamping the carrier plate therebetween, and means connecting the friction devices together through the aperture including a projection smaller than the aperture extending into the aperture from both inner faces into mutual contact, said projections being resistance projection welded together to provide the sole means mounting both friction devices into clamping relation with the carrier plate.
Claim 2
Dependent Claim
90 words
A friction article comprising a carrier plate having a mounting aperture formed therein, a pair of friction devices having outer friction faces and inner mounting faces contacting opposite sides of the carrier plate and clamping the carrier plate therebetween, and means connecting the friction devices together through the aperture including a projection smaller than the aperture extending into the aperture from both inner faces into mutual contact, said projections being resistance projection welded together to provide the sole means mounting both friction devices into clamping relation with the carrier plate.
Claim 3
Dependent Claim
37 words
The friction article of claim 1 where, in the friction devices, the outer faces comprise compacted friction material and the inner faces each comprise a metal backing plate, the backing plates being deformed to provide the projections.
Claim 4
Dependent Claim
56 words
The friction article of claim 2, wherein the backing plates are deformed to provide a button of substantially the same size as the aperture and extending inwardly thereof, the projections being integrally formed on the buttons and extending from the backing plate a distance greater than half the thickness of the carrier plate prior to welding.
Claim 5
Dependent Claim
118 words
A friction article comprising a carrier plate having an aperture therein, a friction device including a backing plate having compacted friction material mounted thereon, and means mounting the backing plate to one side of the carrier plate in contact therewith, comprising a mounting button located in the aperture, said button having a first connection to a member mounted on the opposite side of the carrier plate and a second connection to the backing plate, one of said connections being a resistance projection weld for mounting the friction device into clamping contact with the carrier plate, the resistance projection welded area being smaller than the aperture and providing the sole means mounting the friction device to the carrier plate.
Claim 6
Dependent Claim
118 words
A friction article comprising a carrier plate having an aperture therein, a friction device including a backing plate having compacted friction material mounted thereon, and means mounting the backing plate to one side of the carrier plate in contact therewith, comprising a mounting button located in the aperture, said button having a first connection to a member mounted on the opposite side of the carrier plate and a second connection to the backing plate, one of said connections being a resistance projection weld for mounting the friction device into clamping contact with the carrier plate, the resistance projection welded area being smaller than the aperture and providing the sole means mounting the friction device to the carrier plate.
Claim 7
Dependent Claim
64 words
The friction article of claim 4, including a second identical friction device mounted on the opposite side of the carrier plate, wherein the first connection is a projection on the button which is a resistance projection welded connection to the second friction device, and the second connection is a projection on the button which is resistance projection welded to the first said backing plate.
Claim 8
Dependent Claim
60 words
The friction article of claim 4, wherein the second connection comprises an integral deformation of the backing plate forming the button of substantially the same size as the aperture and an integral projection of reduced size extending from the button, and the second connection comprises a member carried by the carrier plate which is resistance projection welded To the projection.
Claim 9
Dependent Claim
42 words
The friction article of claim 4, wherein the first connection comprises a second identical friction device mounted on the other side of the carrier plate, a second button resistance projection welded to the second backing plate and to the first said button.
Claim 10
Dependent Claim
68 words
The friction article of claim 4, wherein the second connection comprises an integral deformation of the backing plate forming the button and an integral projection of reduced size extending therefrom, and the second connection comprises a second identical friction device mounted on the other side of the carrier plate and having its projection resistance welded to the first said projection, the welded area being smaller than the aperture.
Claim 11
Independent Claim
169 words
A method of assembling a pair of friction devices, each having a friction facing supported by a metal backing plate, to an apertured carrier plate, comprising the steps of forming an integral button on the metal backing plate of each friction device of substantially the same size as the aperture, forming an integral projection on each button which is of substantially smaller size than the button and which extends from the backing plate a distance greater than half the depth of the aperture, positioning one backing plate on one side of the carrier plate with its button projecting into the aperture, positioning the other backing plate on the other side of the carrier plate in spaced relation and with its button projecting into the aperture, engaging the button projections under pressure, and substantially simultaneously passing a current through the friction devices until both backing plates engage the carrier plate, thus fusing the button projections together in a resistance projection weld and clamping the carrier plate between the backing plates.
Claim 12
Independent Claim
169 words
A method of assembling a pair of friction devices, each having a friction facing supported by a metal backing plate, to an apertured carrier plate, comprising the steps of forming an integral button on the metal backing plate of each friction device of substantially the same size as the aperture, forming an integral projection on each button which is of substantially smaller size than the button and which extends from the backing plate a distance greater than half the depth of the aperture, positioning one backing plate on one side of the carrier plate with its button projecting into the aperture, positioning the other backing plate on the other side of the carrier plate in spaced relation and with its button projecting into the aperture, engaging the button projections under pressure, and substantially simultaneously passing a current through the friction devices until both backing plates engage the carrier plate, thus fusing the button projections together in a resistance projection weld and clamping the carrier plate between the backing plates.
Claim 13
Independent Claim
160 words
A method of assembling a friction device, having a friction facing supported by a metal backing plate, to an apertured carrier plate, comprising the steps of providing a metal surface on one side of the carrier plate covering the aperture, providing a weldable metallic intermediary within the aperture so sized as to be laterally immobile therein and having a projection substantially smaller than the aperture contacting said metal surface and so dimensioned to space the backing plate from the carrier plate when the backing plate is positioned on the other side of the carrier plate, applying pressure to the backing plate and to the metal surface and substantially simultaneously passing a current through the backing plate, weldable intermediary, projection and metal surface, until the backing plate contacts the carrier plate, to fuse the intermediary projection to the surface in a resistance projection weld smaller than the aperture and thus mount the friction device in clamping contact with the carrier plate.
Claim 14
Independent Claim
160 words
A method of assembling a friction device, having a friction facing supported by a metal backing plate, to an apertured carrier plate, comprising the steps of providing a metal surface on one side of the carrier plate covering the aperture, providing a weldable metallic intermediary within the aperture so sized as to be laterally immobile therein and having a projection substantially smaller than the aperture contacting said metal surface and so dimensioned to space the backing plate from the carrier plate when the backing plate is positioned on the other side of the carrier plate, applying pressure to the backing plate and to the metal surface and substantially simultaneously passing a current through the backing plate, weldable intermediary, projection and metal surface, until the backing plate contacts the carrier plate, to fuse the intermediary projection to the surface in a resistance projection weld smaller than the aperture and thus mount the friction device in clamping contact with the carrier plate.
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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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |