US3920102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc brake actuating and adjusting mechanism
Assignee: Tokico Ltd
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Filing: 1974-01-10
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Granted: 1975-11-18
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Expires: 1994-01-10
Abstract
Abstract A disc brake comprising an input shaft adapted to receive an input force as a torque around the longitudinal axis thereof and to move rotationally and axially by converting a portion of the torque into an axial thrust, a bolt having one end axially slidably engaging the input shaft and the other end abutting a friction pad, a nut having screw-threads engaging said bolt and being adapted to receive the thrust from the input shaft and when clamping force exceeds a predetermined value to rotate with the input shaft, a ratchet mechanism being disposed between the input shaft and the nut so as to rotate the nut with the input shaft thus moving the bolt toward the friction pad when adjustment is required.
Inventors
- 👤 Hiroshi Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:30
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/56; F16D65/567; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/34; F16D2125/36
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
201 words
A disc brake comprising a housing having an axially stepped bore for receiving an input shaft, a bolt and a nut, said input shaft receiving an input force as a torque around the longitudinal axis thereof and moving rotatinally and axially by means disposed between said housing said input shaft for converting a portion of the torque into an axial thrust, said bolt having one end axially slidably engaged with the input shaft and the other end abutting a friction pad, said nut having screwthreads engaging said bolt and receiving said axial thrust from the input shaft and when a clamping force between the input shaft and the nut exceeds a predetermined value, rotating with said input shaft, and a ratchet mechanism being disposed between said input shaft and the nut for unidirectionally rotating the nut with the input shaft, characTerized in that said bolt and said input shaft are connected by a member, one end of which has parallel opposing axially extending surfaces for slidably engaging an axial slot formed in said bolt, and the other end extending axially through a bore formed in said input shaft and being releasably secured thereto by means of a nut engaging said member.
Claim 2
Dependent Claim
201 words
A disc brake comprising a housing having an axially stepped bore for receiving an input shaft, a bolt and a nut, said input shaft receiving an input force as a torque around the longitudinal axis thereof and moving rotatinally and axially by means disposed between said housing said input shaft for converting a portion of the torque into an axial thrust, said bolt having one end axially slidably engaged with the input shaft and the other end abutting a friction pad, said nut having screwthreads engaging said bolt and receiving said axial thrust from the input shaft and when a clamping force between the input shaft and the nut exceeds a predetermined value, rotating with said input shaft, and a ratchet mechanism being disposed between said input shaft and the nut for unidirectionally rotating the nut with the input shaft, characTerized in that said bolt and said input shaft are connected by a member, one end of which has parallel opposing axially extending surfaces for slidably engaging an axial slot formed in said bolt, and the other end extending axially through a bore formed in said input shaft and being releasably secured thereto by means of a nut engaging said member.
Claim 3
Dependent Claim
54 words
A disc brake as set forth in claim 1 wherein a spring is disposed in said housing for normally biasing said nut against the input shaft and for restraining said nut against rotation until the clamping force exerted by said input shaft exceeds a pre-determined value wherein said nut rotates with the input shaft.
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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |