US3556263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic brake shoe positioner mechanism
Assignee: Bendix Corp
•
Filing: 1969-01-16
•
Granted: 1971-01-19
•
Expires: 1989-01-16
Abstract
Abstract A drum brake is disclosed which includes a mechanism that properly positions the brake shoes with respect to the drum to maintain the proper clearance between the shoes and the drum. The mechanism includes a linkage slidably mounted on the fixed support and connected to one of the shoes so that movement of the shoes in excess of a predetermined amount slides the linkage with respect to the support. The linkage includes a pair of members which move together as a unit during forward braking but which move relative to each other during reverse braking to insure that the brake shoes are repositioned during forward braking only.
Inventors
- 👤 George F Wieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:09
CPC Classifications
F; F16; F16D; F16D51/00; F16D51/16; F16D51/18; F16D51/20; F16D51/24; F16D51/46; F16D51/48; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/56; F16D65/561; F16D65/565
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
In a brake: a drum mounted for rotation with a member to be braked; a fixed support; a pair of brake shoes slidably mounted on said fixed support for movement toward and away from said drum; and positioning means interconnecting one of said shoes and said fixed support to insure proper spacing between the one shoe and the fixed support when the brake is released; said positioning means including a linkage having a pair of members, one of said members being slidably mounted on said fixed support, said one member being operatively connected to the other member for movement with the latter when the other member moves in one direction, but permitting the other member to move relative to the one member when the other member moves in the opposite direction, and means securing said other member to said one shoe.
Claim 2
Dependent Claim
141 words
In a brake: a drum mounted for rotation with a member to be braked; a fixed support; a pair of brake shoes slidably mounted on said fixed support for movement toward and away from said drum; and positioning means interconnecting one of said shoes and said fixed support to insure proper spacing between the one shoe and the fixed support when the brake is released; said positioning means including a linkage having a pair of members, one of said members being slidably mounted on said fixed support, said one member being operatively connected to the other member for movement with the latter when the other member moves in one direction, but permitting the other member to move relative to the one member when the other member moves in the opposite direction, and means securing said other member to said one shoe.
Claim 3
Dependent Claim
52 words
The invention of claim 1: said other member having an elongated opening formed therein; said securing means including abutment means mounted on said one shoe extending through said opening and resilient means interconnecting the other member and the abutment means to yieldably urge the latter toward one end of the elongated opening.
Claim 4
Dependent Claim
33 words
The invention of claim 1 and retainer means yieldably urging said one member into frictional engagement with said fixed support to retard relative sliding motion between the fixed support and said one member.
Claim 5
Dependent Claim
76 words
The invention of claim 2: said other member having a slot formed therein; said one member being slidably disposed within said slot; one end of said one member normally engaging one end of the slot to permit movement of said other member in said one direction to slide the one member on the fixed support; said one end of said slot sliding away from said one member when the other member moves in the opposite direction.
Claim 6
Dependent Claim
77 words
The invention of claim 2: one side of said one member having a recessed portion presenting an elongated sliding surface and an abutment surface; said other member having a raised portion slidably engaging said sliding surface and normally positioned to engage said abutment surface whereby movement of the other member in said one direction is transmitted to said one member; said raised portion sliding along said sliding surface when the other member moves in the opposite direction.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |