Patent US5724560A successfully refreshed from Google Patents.
Patent US3837438A successfully refreshed from Google Patents.
US3837438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk brake with servo action
Assignee: ZF Active Safety US Inc
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Filing: 1972-04-17
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Granted: 1974-09-24
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Expires: 1992-04-17
Abstract
Abstract Two embodiments of disk brake assemblies embodying simplified actuators that include tilting pins. The pins are tilted to cause axial movement of the brake pads into frictional engagement with the associated brake rotor. The direction of tilting of the pins is such that a self-operating force is exerted upon the brake.
Inventors
- 👤 H Hollnagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:18
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/225; F16D55/2255; F16D2127/00; F16D2127/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
260 words
A disk brake assembly for braking the rotation of an associated rotor or the like comprising a brake pad having a frictional lining juxtaposed to a braking surface of the associated rotor, a supporting member held against rotation about the axis of rotation of the associated rotor, tilting pin means interposed between said brake pad and said supporting member, said tilting pin means being associated with said brake pad and with said supporting member for effecting movement of said brake pad relative to said supporting member in a direction parallel to the axis of rotation of the associated rotor when said tilting pin means is moved from a first position to a second position for moving said brake pad friCtional lining into frictional engagement with the rotor braking surface, said tilting pin means being movable between its first and second positions in response to movement of said brake pad relative to said supporting member in a direction normal to the axial direction, lever means, means for connecting said lever means to said supporting member for pivotal movement about a first pivot axis parallel to the rotor axis, and means for pivotally connecting said lever means directly to said brake pad for pivotal movement about a second pivot axis parallel to but offset from said first pivot axis, pivotal movement of said lever means about said first pivot axis being effective to move said brake pad initially in said normal direction and to move said tilting pin means from its first position to its second position to actuate said brake assembly.
Claim 2
Dependent Claim
260 words
A disk brake assembly for braking the rotation of an associated rotor or the like comprising a brake pad having a frictional lining juxtaposed to a braking surface of the associated rotor, a supporting member held against rotation about the axis of rotation of the associated rotor, tilting pin means interposed between said brake pad and said supporting member, said tilting pin means being associated with said brake pad and with said supporting member for effecting movement of said brake pad relative to said supporting member in a direction parallel to the axis of rotation of the associated rotor when said tilting pin means is moved from a first position to a second position for moving said brake pad friCtional lining into frictional engagement with the rotor braking surface, said tilting pin means being movable between its first and second positions in response to movement of said brake pad relative to said supporting member in a direction normal to the axial direction, lever means, means for connecting said lever means to said supporting member for pivotal movement about a first pivot axis parallel to the rotor axis, and means for pivotally connecting said lever means directly to said brake pad for pivotal movement about a second pivot axis parallel to but offset from said first pivot axis, pivotal movement of said lever means about said first pivot axis being effective to move said brake pad initially in said normal direction and to move said tilting pin means from its first position to its second position to actuate said brake assembly.
Claim 3
Dependent Claim
55 words
A disk brake assembly as set forth in claim 1 wherein the tilting pin means is substantially perpendicular to the rotor braking surface when in its first position and tilts toward the direction of rotation of the rotor braking surface when in its second position for exerting a selfenergizing force upon the associated brake pad.
Claim 4
Dependent Claim
79 words
A disk brake assembly as set forth in claim 1 wherein the supporting member comprises a caliper, and further including a second brake pad fixed against axial movement relative to said caliper, said caliper being supported for movement in a direction having an axial component relative to the associated disk brake rotor upon actuation of the first mentioned brake pad for bringing said second brake pad into frictional engagement with an associated braking surface of the disk brake rotor.
Claim 5
Dependent Claim
55 words
A disk brake assembly as set forth in claim 3 wherein the tilting pin means is substantially perpendicular to the rotor braking surface when in its first position and tilts toward the direction of rotation of the rotor braking surface when in its second position for exerting a self-energizing force upon the associated brake pad.
Claim 6
Dependent Claim
31 words
A disk brake assembly as set forth in claim 1 wherein the tilting pin means has operatively pivotal connections at its opposite ends to the brake pad and supporting member, respectively.
Claim 7
Dependent Claim
21 words
A disk brake assembly as set forth in claim 5 wherein the tilting pin means comprising a pair of tilting pins.
Claim 8
Dependent Claim
32 words
A disk brake assembly as set forth in claim 1 further including means for adjusting the position of the tilting pin means for compensating for wear of the brake pad frictional lining.
Claim 9
Dependent Claim
53 words
A disk brake assembly as set forth in claim 1 wherein the tilting pin means defines a shoulder in substantially full face engagement with the brake pad when said tilting pin means is in its first position and angularly disposed with respect thereto when said tilting pin means is in its second position.
Claim 10
Dependent Claim
22 words
A disk brake assembly as set forth in claim 1 wherein the tilting pin means comprises a pair of spaced tilting pins.
Claim 11
Dependent Claim
41 words
A disk brake assembly as set forth in claim 9 wherein the operative engagement of the tilting pins with the caliper is provided by engagement of said pins with a bearing member that is fixed axially relative to the supporting member.
Claim 12
Dependent Claim
38 words
A disk brake assembly as set forth in claim 10 further including means for adjusting the axial position of the bearing member relative to the supporting member for compensating for wear of the frictional lining of the pads.
References Cited (Backward Citations)
US2170893A
Cited
US3404756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |