US3656589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spot type disc brakes
Assignee: Aisin Corp
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Filing: 1970-05-05
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Granted: 1972-04-18
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Expires: 1990-05-05
Abstract
Abstract A spot type disc brake for wheels wherein a hydraulic cylinder housing has at each side a torque-receiving arm comprising a projection extending above and across a brake disc of the outer end the lower half of the projection being cut away or recessed to permit an one inner edge of a reaction transfer plate to move thereinto below the projection.
Inventors
- 👤 Tsuneo Kawabe
- 👤 Toyoaki Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:30
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/225; F16D55/226; F16D55/2262; F16D2055/0004; F16D2055/0016; F16D2055/0025; F16D2055/007
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
268 words
A spot type disc brake for a vehicle wheel comprising a rotatable brake disc, a hydraulic cylinder housing located at one side of said brake disc, two opposed pistons slidably mounted within said cylinder housing, a first backing plate and brake pad actuated by one of said pistons and located between said one piston and said brake disc, a second backing plate and brake pad located on the opposite side of said brake disc, said brake pads being radially located within the outer circumference of said brake disc, a transfer member operably connected at one portion to said other piston for operating said second backing plate and brake pad by an opposite portion of said transfer member, pins for supporting said backing plates, two parallel, spaced, torquereceiving arms extending from said cylinder housing axially of and across said brake disc and adjacent the sides of said first and second backing plates and brake pads, each torque-receiving arm including a first inner portion adjacent one side of said first backing plate and brake pad and a second outer portion adjacent one side of said second backing plate and brake pad, both inner and outer portions of said arms being disposed along at least a portion of the opposed sides of said backing plates and brake pads so as to be substantially in line with a tangent to the line of torque when said brake pads are applied to said brake disc, the outer portion of each arm having a recess in its lower half to permit said transfer member to move into the recess when the brakes are applied.
Claim 2
Dependent Claim
268 words
A spot type disc brake for a vehicle wheel comprising a rotatable brake disc, a hydraulic cylinder housing located at one side of said brake disc, two opposed pistons slidably mounted within said cylinder housing, a first backing plate and brake pad actuated by one of said pistons and located between said one piston and said brake disc, a second backing plate and brake pad located on the opposite side of said brake disc, said brake pads being radially located within the outer circumference of said brake disc, a transfer member operably connected at one portion to said other piston for operating said second backing plate and brake pad by an opposite portion of said transfer member, pins for supporting said backing plates, two parallel, spaced, torquereceiving arms extending from said cylinder housing axially of and across said brake disc and adjacent the sides of said first and second backing plates and brake pads, each torque-receiving arm including a first inner portion adjacent one side of said first backing plate and brake pad and a second outer portion adjacent one side of said second backing plate and brake pad, both inner and outer portions of said arms being disposed along at least a portion of the opposed sides of said backing plates and brake pads so as to be substantially in line with a tangent to the line of torque when said brake pads are applied to said brake disc, the outer portion of each arm having a recess in its lower half to permit said transfer member to move into the recess when the brakes are applied.
Claim 3
Dependent Claim
35 words
A spot type disc brake as claimed in claim 1 wherein each side of said second backing plate is provided with a recess for slidable eNgagement with the second outer portions of said torque-receiving arms.
Claim 4
Dependent Claim
42 words
A spot type disc brake as claimed in claim 1 and further comprising a member secured to said transfer plate adjacent said second backing plate, said member being provided with an upstanding lug for receiving the outer ends of said supporting pins.
Claim 5
Dependent Claim
53 words
A spot type disc brake as claimed in claim 1 and further comprising a member secured to said transfer plate adjacent said second backing plate, the ends of said member slidably engaging the second outer portions of said torque-receiving arms to absorb torque transmitted thereto by said second backing plate and brake pad.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |