Patent US3722636A successfully refreshed from Google Patents.
US3722636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic holding disk brake
Assignee: Individual
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Filing: 1971-04-23
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Granted: 1973-03-27
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Expires: 1991-04-23
Abstract
Abstract This disclosure pertains to that class of braking devices known as disk brakes, and more particularly to disk brakes which are automatically actuated by a fluid to hold or release a shaft, the fluid itself being energized directly or indirectly by the machine of which the aforementioned shaft is a part. A preferred embodiment of the invention is disclosed in detail wherein a disk is mounted on a propeller shaft coupled to a geared transmission, two brake shoes of the invention being actuated by a coil spring to hold the disk and actuated to release the disk by a fluid power cylinder interconnected with the lubrication system of the geared transmission. The aforementioned brake shoes are interconnected with the coil spring and power cylinder such that a small spring force generates a large brake holding force and, conversely, a small fluid pressure releases the brake.
Inventors
- 👤 J Kobelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:56
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/40; F16D65/42; F16D65/46; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/2245; F16D2121/00; F16D2121/02; F16D2121/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
183 words
In combination with a disk, a brake caliper assembly comprising a cAliper frame, a linear actuator having a cylinder part and a piston part, one of said parts of said linear actuator operatively secured to said caliper frame, spring means applying equal and opposite co-axial forces respectively to said cylinder and piston parts, a fluid in said linear actuator opposing when energized said spring forces on said piston and cylinder parts, a pair of brake shoes in opposed face to face relation, one of said brake shoes on each side of said disk, each of a pair of actuating levers pivotally mounted in said caliper frame, a pair of actuating links, each of said actuating levers pivotally connected substantially at one end to one of said brake shoes and at its other end interconnected to one of (a) said pair of actuating links, each of said actuated links interconnected to the other of said parts of said linear actuator whereby energizing said fluid causes said brake shoes to release said disk and de-energizing said fluid causes said brake shoes to hold said disk.
Claim 2
Dependent Claim
183 words
In combination with a disk, a brake caliper assembly comprising a cAliper frame, a linear actuator having a cylinder part and a piston part, one of said parts of said linear actuator operatively secured to said caliper frame, spring means applying equal and opposite co-axial forces respectively to said cylinder and piston parts, a fluid in said linear actuator opposing when energized said spring forces on said piston and cylinder parts, a pair of brake shoes in opposed face to face relation, one of said brake shoes on each side of said disk, each of a pair of actuating levers pivotally mounted in said caliper frame, a pair of actuating links, each of said actuating levers pivotally connected substantially at one end to one of said brake shoes and at its other end interconnected to one of (a) said pair of actuating links, each of said actuated links interconnected to the other of said parts of said linear actuator whereby energizing said fluid causes said brake shoes to release said disk and de-energizing said fluid causes said brake shoes to hold said disk.
Claim 3
Dependent Claim
17 words
Apparatus as defined in claim 1, further wherein said spring means is contained within said linear actuator.
Claim 4
Dependent Claim
21 words
Apparatus as defined in claim 1, further wherein spring actuated slack adjuster means interconnect said brake shoes to said caliper frame.
Claim 5
Dependent Claim
15 words
Apparatus as defined in claim 1, further wherein said spring means comprises a coil spring.
Claim 6
Dependent Claim
17 words
Apparatus as defined in claim 1, further wherein each of said actuating links comprises length adjusting means.
Claim 7
Dependent Claim
15 words
Apparatus as defined in claim 1, further wherein said spring means comprises a pneumatic spring.
Claim 8
Dependent Claim
184 words
In combination with a disk mounted on a power transmission shaft, a brake caliper assembly comprising a caliper frame, a linear actuator comprising a cylinder and piston, said cylinder operatively secured to said caliper frame, a coil spring applying equal and opposite co-axial forces respectively to said cylinder and piston, within said linear actuator a fluid energized by the lubrication system of said power transmission, said energized fluid opposing said forces of said coil spring on said piston and cylinder, a pair of actuating levers pivotally mounted in said caliper frame, a pair of brake shoes in opposed face to face relation, one of said brake shoes on each side of said disk, a pair of actuating links, each of said actuating levers pivotally connected substantially at one end to one of said brake shoes and at its other end pivotally connected to one of (a) said pair of actuating links, each of said actuating links interconnected to said piston whereby energizing said fluid causes said brake shoes to release said disk and de-energizing said fluid causes said brake shoes to hold said disk.
Claim 9
Dependent Claim
184 words
In combination with a disk mounted on a power transmission shaft, a brake caliper assembly comprising a caliper frame, a linear actuator comprising a cylinder and piston, said cylinder operatively secured to said caliper frame, a coil spring applying equal and opposite co-axial forces respectively to said cylinder and piston, within said linear actuator a fluid energized by the lubrication system of said power transmission, said energized fluid opposing said forces of said coil spring on said piston and cylinder, a pair of actuating levers pivotally mounted in said caliper frame, a pair of brake shoes in opposed face to face relation, one of said brake shoes on each side of said disk, a pair of actuating links, each of said actuating levers pivotally connected substantially at one end to one of said brake shoes and at its other end pivotally connected to one of (a) said pair of actuating links, each of said actuating links interconnected to said piston whereby energizing said fluid causes said brake shoes to release said disk and de-energizing said fluid causes said brake shoes to hold said disk.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |