Patent US2818875A successfully refreshed from Google Patents.
Patent US4453621A successfully refreshed from Google Patents.
US4453621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum brake shoe and lining assembly and method of making same
Assignee: Motors Liquidation Co
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Filing: 1982-06-07
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Granted: 1984-06-12
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Expires: 2002-06-07
Abstract
Abstract A strip of shoe rim steel has holes punched, and lining is molded to it in segments with a flat or curved top, the strip then being bent at locations between the lining segments and remaining flat so as not to destroy the bond. The assembly is trimmed to length, the web attached and the lining pads ground to final dimensions. The number and length of lining pad segments can be varied. The lining can be used down to the rim ends at each pad while the pad center still contains lining where the molding holes are located.
Inventors
- 👤 Edward H. Warwick
- 👤 Donald L. Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:33
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/04; F16D69/0416; F16D2069/0425; F16D2069/0483; F16D2069/0491
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A drum brake shoe and lining assembly comprising: a shoe having a rim and a web, said rim being a unitary strip transversely bent and formed to a generally arcuate configuration defined by a series of chords of an arc providing a series of planar rim sections angularly joined together, said web having an unbroken edge chordally configured to mate with the inner surfaces of said planar rim sections and being secured to the inner surface of said rim along said web edge; and lining providing friction braking material, said lining being a series of arcuately spaced lining segments each having a surface on one side complementary to the outer surface of a planar rim section and secured thereto, said lining segments each having another side opposite said one side complementary to the friction braking surface of a drum to be braked.
Claim 2
Dependent Claim
142 words
A drum brake shoe and lining assembly comprising: a shoe having a rim and a web, said rim being a unitary strip transversely bent and formed to a generally arcuate configuration defined by a series of chords of an arc providing a series of planar rim sections angularly joined together, said web having an unbroken edge chordally configured to mate with the inner surfaces of said planar rim sections and being secured to the inner surface of said rim along said web edge; and lining providing friction braking material, said lining being a series of arcuately spaced lining segments each having a surface on one side complementary to the outer surface of a planar rim section and secured thereto, said lining segments each having another side opposite said one side complementary to the friction braking surface of a drum to be braked.
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) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |