US3602342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slack adjuster for vehicle brakes
Assignee: Individual
•
Filing: 1970-03-23
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Granted: 1971-08-31
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Expires: 1990-03-23
Abstract
Abstract A slack adjuster for vehicle brakes in which an arm has a housing at one end in which is rotatably carried a worm gear, the worm gear being splined to a brake shaft and in engagement with a worm for rotating the brake shaft relative to the arm for brake adjustment purposes. The improvement comprises splitting the worm gear in a quadrant opposite the quadrant in contact with the worm. The housing also is split so that when clamped together by bolts or the like it locks the worm gear to the brake shaft and also locks the worm to the worm gear, thereby eliminating any slack in the parts and also preventing the worm from rotating thus to maintain the brakes in adjustment.
Inventors
- 👤 Paul S Whittle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:55
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/60; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
In a slack adjuster for vehicle brakes, a. a brake arm having adjacent one end a worm gear housing, b. a worm gear rotatably mounted in the housing having a centrally disposed splined opening therein adapted to fit about a complementarily splined brake shaft, c. a worm carried by the brake arm and in mesh with the worm gear for rotating the gear relative to the housing, thereby to adjust the angular position of the arm relative to the brake shaft, d. said worm gear being split from its outer periphery to its center, said split being located in a quadrant of the worm gear generally opposite the quadrant thereof in engagement with the worm, e. said housing being split at a position generally opposite the quadrant of the gear which engages the worm, and f. means on the split housing for clamping it tightly about the periphery of the worm gear in turn to clamp the worm gear about the splined portion of the brake shaft and to force the worm engaging quadrant of the worm gear into tight, locking engagement with the worm, thereby to eliminate slack between the worm and gear while also locking the gear to the splined shaft.
Claim 2
Dependent Claim
203 words
In a slack adjuster for vehicle brakes, a. a brake arm having adjacent one end a worm gear housing, b. a worm gear rotatably mounted in the housing having a centrally disposed splined opening therein adapted to fit about a complementarily splined brake shaft, c. a worm carried by the brake arm and in mesh with the worm gear for rotating the gear relative to the housing, thereby to adjust the angular position of the arm relative to the brake shaft, d. said worm gear being split from its outer periphery to its center, said split being located in a quadrant of the worm gear generally opposite the quadrant thereof in engagement with the worm, e. said housing being split at a position generally opposite the quadrant of the gear which engages the worm, and f. means on the split housing for clamping it tightly about the periphery of the worm gear in turn to clamp the worm gear about the splined portion of the brake shaft and to force the worm engaging quadrant of the worm gear into tight, locking engagement with the worm, thereby to eliminate slack between the worm and gear while also locking the gear to the splined shaft.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |