Patent US3610375A successfully refreshed from Google Patents.
US3610375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc brake wear compensation
Assignee: MR GASKET COMPANY A OH CORP
•
Filing: 1969-08-28
•
Granted: 1971-10-05
•
Expires: 1989-08-28
Abstract
Abstract The invention concerns disc brake lining wear compensation, in which a fluid pressure responsive element, as for example a plunger, urges the brake lining toward the disc, there being load transmitting shoulders carried by the plunger and by auxiliary means to mechanically advance the plunger toward the disc, such shoulders being located for relative shifting in response to predetermined plunger advancement to block retraction of the plunger in such manner as to compensate for brake lining wear.
Inventors
- 👤 Warren L Gilliland
- 👤 Franklin B Airheart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:04
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D65/18; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/225; F16D55/226; F16D65/38; F16D65/40; F16D65/52; F16D65/54; F16D2055/0004; F16D2055/0016; F16D2055/0025; F16D2121/00; F16D2121/02; F16D2121/14; F16D2123/00; F16D2125/00; F16D2125/02; F16D2125/06; F16D2125/18; F16D2125/20; F16D2125/22; F16D2125/28; F16D2125/32
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
236 words
In a disc brake, the combination comprising a. a plunger element and cylinder assembly, the plunger element being responsive to fluid pressure application to advance in one direction relative to the cylinder to transmit actuating force for displacing a brake part into braking engagement with a relatively rotating disc, the brake part being subject to wear, and b. auxiliary means to mechanically advance the plunger element relative to the cylinder to displace said part into braking engagement with the disc, said auxiliary means including a subplunger element projecting coaxially within a bore formed by the plunger element, the end of the subplunger element within the bore defining a piston face, c. there being axially spaced flanges on one of said elements and projecting generally radially proximate the subplunger element periphery, and there being split ring structure carried by and protruding from grooving formed by the other element proximate the plunger element bore so that the split ring structure cams over successive flanges as the plunger element is advanced in said one direction relative to the subplunger element, the split ring structure being engageable with said flanges to block retraction of the plunger relatively toward the subplunger, and d. there being fluid pressure passage means extending adjacent said split ring structure and flanges to communicate said fluid pressure for application against said subplunger piston face acting to resist subplunger movement with the plunger in said one direction.
Claim 2
Dependent Claim
236 words
In a disc brake, the combination comprising a. a plunger element and cylinder assembly, the plunger element being responsive to fluid pressure application to advance in one direction relative to the cylinder to transmit actuating force for displacing a brake part into braking engagement with a relatively rotating disc, the brake part being subject to wear, and b. auxiliary means to mechanically advance the plunger element relative to the cylinder to displace said part into braking engagement with the disc, said auxiliary means including a subplunger element projecting coaxially within a bore formed by the plunger element, the end of the subplunger element within the bore defining a piston face, c. there being axially spaced flanges on one of said elements and projecting generally radially proximate the subplunger element periphery, and there being split ring structure carried by and protruding from grooving formed by the other element proximate the plunger element bore so that the split ring structure cams over successive flanges as the plunger element is advanced in said one direction relative to the subplunger element, the split ring structure being engageable with said flanges to block retraction of the plunger relatively toward the subplunger, and d. there being fluid pressure passage means extending adjacent said split ring structure and flanges to communicate said fluid pressure for application against said subplunger piston face acting to resist subplunger movement with the plunger in said one direction.
Claim 3
Dependent Claim
21 words
The combination of claim 1 wherein said flanges are on the subplunger and said grooving is formed by the plunger element.
Claim 4
Dependent Claim
42 words
The combination of claim 2 wherein there are at least two split rings carried by the plunger element and axially spaced by an amount different from the spacing of the flanges on said subplunger element, whereby the rings alternately engage the flanges.
Claim 5
Dependent Claim
22 words
The combination of claim 3 in which said passage means is defined by an axial passage sunk in the plunger element bore.
Claim 6
Dependent Claim
30 words
The combination of claim 3 wherein said flanges have cam surfaces operable upon advancement of the plunger element relative to the subplunger element to deform and tension said ring structure.
Claim 7
Dependent Claim
9 words
The combination of claim 1 including said brake part.
Claim 8
Dependent Claim
106 words
The combination of claim 1 including another assembly including a pair of support members retained against relative separation while being free for relative shifting in a lateral direction, at least one of said members having an opening therethrough, and a pair of braking parts having laterally spaced apart opposed surfaces for clamping engagement with opposite faces of a disc received therebetween, at least one of said parts projection through said opening and said parts being carried by said other assembly for relative lateral guided movement while being retained against separation from said other assembly, and said plunger being operatively connected to one of said brake parts.
Claim 9
Dependent Claim
25 words
The combination of claim 7 wherein one member comprises a carrier plate carrying said brake parts, said plate also carrying said plunGer and cylinder assembly.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |