US3298470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake mechanism and system
Assignee: Eaton Corp
•
Filing: 1965-04-21
•
Granted: 1967-01-17
•
Expires: 1985-04-21
Abstract
No abstract record available.
Inventors
- 👤 Robert C Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:36
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D65/22; B; B60; B60T; B60T17/00; B60T17/18; F16D65/02; F16D65/04; F16D65/08; F16D65/09; F16D65/091; F16D2125/00; F16D2125/18; F16D2125/58; F16D2125/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A DUAL MOTOR SYSTEM FOR A WEDGE-OPERATED BRAKE ASSEMBLY INCLUDING AN AXLE CARRYING A FLANGE, A WHEEL MOUNTED FOR ROTATION ON THE AXLE AND HAVING A BRAKE DRUM SECURED THERETO FOR ROTATION THEREWITH, RADIALLY EXPANDING FRICTION TYPE BRAKE MOUNTED ON THE FLANGE, AND AN OPERATOR MEMBER RECIPROCABLY MOVABLE AND HAVING A TAPERED PORTION OPERABLY DISPOISED FOR WEDGING COACTION BETWEEN THE EXTREMITIES OF THE BRAKE SHOES, SAID DUAL MOTOR SYSTEM COMPRISING, A HOUSING FIXED RELATIVE TO THE WHEEL AXIS, SAID HOUSING DEFINING AN ANNULAR CYLINDER SURROUNDING THE AXLE, A HEAD CLOSING ONE END OF SAID ANNULAR CYLINDER, A FIRST ANNULAR PISTON RECIPROCABLE WITHIN SAID ANNULAR CYLINDER, MEANS OPERABLY COUPLING THE OPERATOR MEMBER TO SAID FIRST ANNULAR PISTON, FIRST DIVIDER MEANS DIVIDING SAID ANNULAR CYLINDER INTO A FIRST SUB-CHAMBER ON ONE SIDE OF SAID FIRST ANNULAR PISTON AND A SECOND SUB-CHAMBER ON THE OTHER SIDE OF SAID FIRST ANNULAR PISTON, SAID FIRST DIVIDER MEANS COMPRISING A ROLLING DIAPHRAGM COUPLED TO SAID FIRST PISTON AND THE CYLINDER WALL, A SECOND PISTON RECIPROCABLE WITHIN SAID CYLINDER BETWEEN SAID FIRST PISTON AND SAID HEAD, SECOND DIVIDER MEANS DIVIDING SAID CYLINDER INTO A THIRD SUB-CHAMBER BETWEEN SAID SECOND PISTON AND SAID HEAD,
Claim 2
Dependent Claim
196 words
A DUAL MOTOR SYSTEM FOR A WEDGE-OPERATED BRAKE ASSEMBLY INCLUDING AN AXLE CARRYING A FLANGE, A WHEEL MOUNTED FOR ROTATION ON THE AXLE AND HAVING A BRAKE DRUM SECURED THERETO FOR ROTATION THEREWITH, RADIALLY EXPANDING FRICTION TYPE BRAKE MOUNTED ON THE FLANGE, AND AN OPERATOR MEMBER RECIPROCABLY MOVABLE AND HAVING A TAPERED PORTION OPERABLY DISPOISED FOR WEDGING COACTION BETWEEN THE EXTREMITIES OF THE BRAKE SHOES, SAID DUAL MOTOR SYSTEM COMPRISING, A HOUSING FIXED RELATIVE TO THE WHEEL AXIS, SAID HOUSING DEFINING AN ANNULAR CYLINDER SURROUNDING THE AXLE, A HEAD CLOSING ONE END OF SAID ANNULAR CYLINDER, A FIRST ANNULAR PISTON RECIPROCABLE WITHIN SAID ANNULAR CYLINDER, MEANS OPERABLY COUPLING THE OPERATOR MEMBER TO SAID FIRST ANNULAR PISTON, FIRST DIVIDER MEANS DIVIDING SAID ANNULAR CYLINDER INTO A FIRST SUB-CHAMBER ON ONE SIDE OF SAID FIRST ANNULAR PISTON AND A SECOND SUB-CHAMBER ON THE OTHER SIDE OF SAID FIRST ANNULAR PISTON, SAID FIRST DIVIDER MEANS COMPRISING A ROLLING DIAPHRAGM COUPLED TO SAID FIRST PISTON AND THE CYLINDER WALL, A SECOND PISTON RECIPROCABLE WITHIN SAID CYLINDER BETWEEN SAID FIRST PISTON AND SAID HEAD, SECOND DIVIDER MEANS DIVIDING SAID CYLINDER INTO A THIRD SUB-CHAMBER BETWEEN SAID SECOND PISTON AND SAID HEAD,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |