US3822768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cone friction brake
Assignee: Mannesmann Demag AG
•
Filing: 1972-09-25
•
Granted: 1974-07-09
•
Expires: 1992-09-25
Abstract
Abstract Disclosed herein is an improved cone friction brake with an interior brake drum and an exterior brake ring having a brake lining disposed therebetween. The brake drum is connected to an axially displaceable shaft on the apparatus, e.g., an electric motor, to be braked, while the brake ring, which is nonrotatable, is mounted for limited displacement in the apparatus housing by a unique self-adjusting mechanism.
Inventors
- 👤 J Sebulke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:24
CPC Classifications
F; F16; F16D; F16D59/00; F16D59/02; F16D49/00; H; H02; H02K; H02K7/00; H02K7/10; H02K7/12; H02K7/125; F16D65/00; F16D65/02; F16D2065/024
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
A cone friction brake having an interior truncated conical brake drum and an exterior brake ring with a first brake lining disposed therebetween, said brake drum being connected to a rotatable shaft which is axially displaceable in an apparatus to be braked, said brake ring being non-rotatable and axially displaceable within a solid housing, said brake being further characterized in that a. said non-rotatable, axially displaceable brake ring is connected through at least one thread means to a rotatable adjustment ring; b. said thread means being adapted to displace said rotatable adjustment ring in relation to said non-rotatable brake ring; and c. a second brake lining means is disposed between said adjustment ring and said brake drum to transmit torque from said drum to said adjustment ring as said first brake lining is worn away; d. whereby rotation of said adjustment ring tends to maintain, as a constant, the axial displacement of said shaft.
Claim 2
Dependent Claim
154 words
A cone friction brake having an interior truncated conical brake drum and an exterior brake ring with a first brake lining disposed therebetween, said brake drum being connected to a rotatable shaft which is axially displaceable in an apparatus to be braked, said brake ring being non-rotatable and axially displaceable within a solid housing, said brake being further characterized in that a. said non-rotatable, axially displaceable brake ring is connected through at least one thread means to a rotatable adjustment ring; b. said thread means being adapted to displace said rotatable adjustment ring in relation to said non-rotatable brake ring; and c. a second brake lining means is disposed between said adjustment ring and said brake drum to transmit torque from said drum to said adjustment ring as said first brake lining is worn away; d. whereby rotation of said adjustment ring tends to maintain, as a constant, the axial displacement of said shaft.
Claim 3
Dependent Claim
26 words
A cone friction brake in accordance with claim 1, in which a. said non-rotatable brake ring has projections engaging in mating grooves formed in said housing.
Claim 4
Dependent Claim
34 words
A cone friction brake in accordance with claim 1, in which a. said non-rotatable brake ring is biased by springs which produce a force active in the disengagement direction of the cone friction brake.
Claim 5
Dependent Claim
28 words
A cone friction brake in accordance with claim 1, in which a. a regression control means is arranged between the non-rotatable brake ring and the rotatable adjustment ring.
Claim 6
Dependent Claim
84 words
A cone friction brake in accordance with claim 4, in which a. said regression control means includes flat pawl springs; b. one end of each pawl spring is attached to the periphery of the adjustment ring; c. ratchet-shaped support surfaces are formed in said brake ring; d. the freE end of each pawl spring is directed tangentially away from the periphery opposite to the direction of rotation of the adjustment ring in a manner whereby in locked position they rest on said ratchet-shaped surfaces.
Claim 7
Dependent Claim
42 words
A cone friction brake in accordance with claim 1, in which a. an interior ring is provided within the adjustment ring, a second brake means is carried by said interior ring along with a regression adjustment thread for counteracting the adjustment thread.
Claim 8
Dependent Claim
42 words
A cone friction brake in accordance with claim 6, in which a. an engaging device is disposed between the adjustment ring and the interior ring to effect the return of the interior ring in a predetermined adjustment direction to compensate for slippage.
Claim 9
Dependent Claim
84 words
A cone friction brake in accordance with claim 7, in which a. the engaging device includes flat pawl driving springs; b. one end of each pawl spring is connected to the periphery of the interior ring and the free end of which spring is directed tangentially away from the periphery opposite to the turning direction of the interior ring; c. said adjustment ring includes ratchet-shaped inner surfaces; d. whereby in locked position of the interior ring the spring rests on said ratchet-shaped support surfaces.
Claim 10
Dependent Claim
25 words
A cone friction brake in accordance with claim 1, in which a. said adjustment ring is supported in the housing by an axial pressure bearing.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |