Patent US3812935A successfully refreshed from Google Patents.
US3812935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc brake wear take up device
Assignee: United States Steel Corp
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Filing: 1973-01-15
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Granted: 1974-05-28
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Expires: 1993-01-15
Abstract
Abstract A wear take-up device for a disc brake assembly comprising: friction means for frictionally engaging a rotor, and movable actuator means; the actuator means including first means for engaging the friction means when the actuator means moves in a first direction and second means for disengaging the first means from the friction means when the actuator means moves in a second direction wherein movement in the first direction is toward frictional engagement. The first means comprises wedge means including ramp members and a circumferentially expandable ring member, the ring member being adapted to ride on said ramp members. The second means comprises disabler means having a plurality of arm members for engaging the ring member and proving the same out of engagement with the friction means.
Inventors
- 👤 W Pringle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:43
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D65/18; F16D65/38; F16D65/40; F16D65/52; F16D65/54; F16D2121/00; F16D2121/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
81 words
A disc brake assembly comprising: friction means for frictionally engaging a rotor, and movable actuator means; said actuator means including wedge means for engaging said friction means when said actuator means moves in a first direction and disabler means having at least one stationary arm member in operative proximity to said wedge means for disengaging said wedge means from said friction means when said actuator means moves in a second direction wherein movement in said second direction is toward frictional engagement.
Claim 2
Dependent Claim
81 words
A disc brake assembly comprising: friction means for frictionally engaging a rotor, and movable actuator means; said actuator means including wedge means for engaging said friction means when said actuator means moves in a first direction and disabler means having at least one stationary arm member in operative proximity to said wedge means for disengaging said wedge means from said friction means when said actuator means moves in a second direction wherein movement in said second direction is toward frictional engagement.
Claim 3
Dependent Claim
32 words
An assembly as set forth in claim 1 wherein said wedge means includes ramp members and a circumferentially expandable ring member, said ring member being adapted to ride on said ramp members.
Claim 4
Dependent Claim
18 words
An assembly as set forth in claim 2 wherein said actuator means includes a substantially cylindrical actuator member.
Claim 5
Dependent Claim
21 words
An assembly as set forth in claim 3 wherein said ramp members are disposed about the circumference of said actuator member.
Claim 6
Dependent Claim
25 words
An assembly as set forth in claim 4 wherein said wedge means includes a spacer member for positioning said ring member on said ramp members.
Claim 7
Dependent Claim
26 words
An assembly as set forth in claim 5 wherein said actuator member includes an outwardly extending flange for maintaining said spacer member and ring member thereon.
Claim 8
Dependent Claim
22 words
An assembly as set forth in claim 6 wherein said disabler means includes a spider member having a plurality of arm members.
Claim 9
Dependent Claim
25 words
An assembly as set forth in claim 7 wherein each of said arm members includes an inwardly extending finger member for engaging said ring member.
Claim 10
Dependent Claim
21 words
An assembly as set forth in claim 8 wherein said spider member includes a collar member for interconnecting said arm members.
Claim 11
Dependent Claim
31 words
An assembly as set forth in claim 9 wherein said actuator member includes three ramp members interposed by grooves and said disabler means includes three arm members disposed in said grooves.
Claim 12
Dependent Claim
33 words
An assembly as set forth in claim 10 wherein said friction means includes a housing member slidably mounted on a support body and a brake piston member movably supported within said housing member.
Claim 13
Dependent Claim
20 words
An assembly as set forth in claim 11 wherein said actuator member is slidably disposed within said brake piston member.
Claim 14
Dependent Claim
28 words
An assembly as set forth in claim 12 wherein said housing member includes a locating groove adapted to receive and locate said collar member of said disabler means.
Claim 15
Dependent Claim
27 words
An assembly as set forth in claim 13 wherein said actuator means includes a threadably movable shaft member for moving said actuator longitudinally within said housing membeR.
Claim 16
Dependent Claim
25 words
An assembly as set forth in claim 14 wherein said friction means includes a floating caliper member secured to said housing member for movement therewith.
Claim 17
Dependent Claim
22 words
An assembly as set forth in claim 1 wherein said disabler means includes a spider member having a plurality of arm members.
Claim 18
Dependent Claim
20 words
An assembly as set forth in claim 16 wherein each of said arm members includes an inwardly extending finger member.
Claim 19
Dependent Claim
20 words
An assembly as set forth in claim 16 wherein said spider member includes a collar member for interconnecting said members.
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |