US3649959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle disk brake lining wear
Assignee: Honda Motor Co Ltd
•
Filing: 1970-07-07
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Granted: 1972-03-14
•
Expires: 1990-07-07
Abstract
Abstract An abrasion detecting apparatus for a friction member comprises a detecting switch having facing electric contacts constituted on the one hand as a rotating member such as the brake disk and on the other hand a lead wire embedded in a friction member such as a brake pad facing the rotating member. The switch is interposed in a circuit having an indicating device such as a lamp connected to an electric source. The portion of the lead wire embedded in the friction member is covered over the entire surface thereof with an insulating layer such as an insulating tube.
Inventors
- 👤 Mamoru Sakata
- 👤 Hiroyuki Komori
- 👤 Katsuhiko Fujii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:58
CPC Classifications
F; F16; F16D; F16D66/00; F16D66/02; F16D66/021; F16D66/022; F16D66/023; F16D66/024
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
Abrasion detecting apparatus for a disk brake assembly constituted by a rotatable disk member and an abradable friction member facing the disk member and applicable thereagainst to develop friction and slow the rotatable disk member, said detecting apparatus comprising an elongate lead wire embedded in said friction member and extending linearly in substantially parallel relation to said disk member, said lead wire extending inwardly from the periphery of the disk member to the region of the center of the friction member, and insulation means covering said leAd wire in entirety in the portion thereof embedded in the friction member.
Claim 2
Dependent Claim
99 words
Abrasion detecting apparatus for a disk brake assembly constituted by a rotatable disk member and an abradable friction member facing the disk member and applicable thereagainst to develop friction and slow the rotatable disk member, said detecting apparatus comprising an elongate lead wire embedded in said friction member and extending linearly in substantially parallel relation to said disk member, said lead wire extending inwardly from the periphery of the disk member to the region of the center of the friction member, and insulation means covering said leAd wire in entirety in the portion thereof embedded in the friction member.
Claim 3
Dependent Claim
32 words
Abrasion detecting apparatus as claimed in claim 1 wherein said insulation means comprises an insulating envelope of tubular shape completely enclosing the embedded portion of the lead wire in said one member.
Claim 4
Dependent Claim
59 words
Abrasion detecting apparatus as claimed in claim 1 wherein said insulation means comprises an insulation layer on said lead wire, said wire having an exposed end, said wire being folded onto itself so that said exposed end extends outside said one member and the remainder of the wire embedded in said one member is completely covered by said layer.
Claim 5
Dependent Claim
32 words
Abrasion detecting apparatus as claimed in claim 3 comprising an insulation tube on said one member enclosing the lead wire where it projects from said one member to cover said exposed end.
Claim 6
Dependent Claim
24 words
Abrasion detecting apparatus as claimed in claim 3 wherein said wire is constituted of a subdivided length of wire with the insulation layer thereon.
Claim 7
Dependent Claim
27 words
Abrasion detecting apparatus as claimed in claim 1 comprising an insulation tube on said one member enclosing the lead wire where it projects from said one member.
References Cited (Backward Citations)
US1902759A
Cited
US2217176A
Cited
US3223795A
Cited
US3271737A
Cited
US3456236A
Cited
US3479640A
Cited
US3553642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |