US3739883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc brake with resilient torque connection
Assignee: Unifrax I LLC
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Filing: 1971-04-01
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Granted: 1973-06-19
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Expires: 1991-04-01
Abstract
Abstract A flexible transmission band for applying braking torque force to the driven friction members of a disc brake. The band functions in such a manner as to reduce shear and impact loading on the brake members, replacing this at least partially by compressive and friction loading on the outer periphery of the brake discs. Shear loading can be reduced further by providing discs with wider rims which permit correspondingly wider and stronger keyway slots.
Inventors
- 👤 G Marin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:15
CPC Classifications
B; B60; B60T; B60T1/00; B60T1/02; B60T1/06; F; F16; F16D; F16D55/00; F16D55/02; F16D65/00; F16D65/02; F16D65/12; F16D65/125; F16D65/126
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A disc brake for arresting motion of a driving member, comprising: a. at least one driven friction disc having an inner wearing section combined with a keyway containing peripheral rim section; b. at least one stationary friction disc having an outer wearing section combined with a keyway containing an inner peripheral rim section; c. means for axially compressing the discs together; d. at least one axially aligned keyway slot, disposed in the peripheral surface of the driven friction disc, the slot having an elongated bar member positioned therein; and e. said bar member engaging a flexible metallic band attached at one extremity to the bar member; attached at the other extremity to the driving member; and surrounding the driven discs, whereby braking torque is transmitted between the bar member and the driving member.
Claim 2
Dependent Claim
133 words
A disc brake for arresting motion of a driving member, comprising: a. at least one driven friction disc having an inner wearing section combined with a keyway containing peripheral rim section; b. at least one stationary friction disc having an outer wearing section combined with a keyway containing an inner peripheral rim section; c. means for axially compressing the discs together; d. at least one axially aligned keyway slot, disposed in the peripheral surface of the driven friction disc, the slot having an elongated bar member positioned therein; and e. said bar member engaging a flexible metallic band attached at one extremity to the bar member; attached at the other extremity to the driving member; and surrounding the driven discs, whereby braking torque is transmitted between the bar member and the driving member.
Claim 3
Dependent Claim
30 words
A disc brake according to claim 1 in which the driving member has at least one radially projecting extension for engaging the bar member during reverse motion of the brake.
Claim 4
Dependent Claim
57 words
A disc brake according to claim 1 in which said driven discs include a plurality of axially aligned keyway slots, disposed in the peripheral surface of said driven discs, elongated bar members positioned in said keyways and brake driving members having radially projecting extensions for engaging said keyway bar members to insure brake functionality during reverse motion.
Claim 5
Dependent Claim
18 words
A disc brake according to claim 1 in which the discs are of uniform width throughout their structure.
Claim 6
Dependent Claim
37 words
A disc brake according to claim 1 in which said driven discs consist of an inner wearing section combined with a keyway containing peripheral rim section of substantially greater width than that of the inner wearing section.
Claim 7
Dependent Claim
36 words
A disc brake according to claim 1 in which said stationary discs consist of an outer wearing section combineD with a keyway containing inner peripheral rim section of substantially greater width than the outer wearing section.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |