Patent US2727845A successfully refreshed from Google Patents.
US2727845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a molded friction lining and bonding same to a brake shoe
Assignee: Motors Liquidation Co
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Filing: 1953-09-16
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Granted: 1955-12-20
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Expires: 1973-09-16
Abstract
No abstract record available.
Inventors
- 👤 Robert W Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:26
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; B; B29; B29C; B29C65/00; B29C65/48; B29C65/4805; B29C65/483; B29C66/00; B29C66/70; B29C66/73; B29C66/739; B29C66/7394; B29C66/80; B29C66/82; B29C66/822; B29C66/8221; B29C66/8227; B29C66/828; B29C66/8286; B29C66/83; B29C66/832; B29C66/8324; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
THE STEPS IN THE METHOD OF MAKING A MOLDED FRICTION LINING IN CURVED CYLINDRICAL SHAPE AND BONDED DIRECTLY TO A BRAKE SHOE, COMPRISING: MOLDING A THERMOSETTING FIBROUS FRICTION COMPOUND INTO A SUBSTANTIALLY STRAIGHT SLAB HAVING A UNIFORM FLAT SURFACE ON ONE FACE THEREOF AND HAVING ON ITS OPPOSITE FACE A SERIES OF SPACED DEPRESSED AREAS AND HIGH AREAS, PARTIALLY CURING SAID STRAIGHT SLAB UNDER HEAT AND PRESSURE, CUTTING THE PARTIALLY CURED STRAIGHT SLAB INTO ELONGATED ONE-PIECE BRAKE LINING BLANKS IN SUCH DIRECTION THAT SAID DEPRESSED AREAS EXTEND ACROSS EACH OF SAID BLANKS, BENDING EACH OF THE PARTIALLY CURED BLANKS LENGTHWISE INTO ARCUATE FORM AROUND A CYLINDRICAL METAL SURFACE SO THAT THE SPACED HIGH AREAS OF THE BLANK PROJECT RADIALLY OUTWARDLY AND TIGHTLY CLAMPING SAID BLANK THROUGHOUT ITS FULL RADIAL EXTENT THEREUPON BY AN OVERLYING FLEXIBLE METAL BAND WHICH PRESSES UPON ONLY SAID SPACED HIGH AREAS OF SAID BLANK, THEN COMPLETING THE CURE OF SAID LINING UNDER HEAT WHILE SIMULTANEOUSLY BONDING SAID LINING TO SAID METAL SURFACE.
Claim 2
Dependent Claim
166 words
THE STEPS IN THE METHOD OF MAKING A MOLDED FRICTION LINING IN CURVED CYLINDRICAL SHAPE AND BONDED DIRECTLY TO A BRAKE SHOE, COMPRISING: MOLDING A THERMOSETTING FIBROUS FRICTION COMPOUND INTO A SUBSTANTIALLY STRAIGHT SLAB HAVING A UNIFORM FLAT SURFACE ON ONE FACE THEREOF AND HAVING ON ITS OPPOSITE FACE A SERIES OF SPACED DEPRESSED AREAS AND HIGH AREAS, PARTIALLY CURING SAID STRAIGHT SLAB UNDER HEAT AND PRESSURE, CUTTING THE PARTIALLY CURED STRAIGHT SLAB INTO ELONGATED ONE-PIECE BRAKE LINING BLANKS IN SUCH DIRECTION THAT SAID DEPRESSED AREAS EXTEND ACROSS EACH OF SAID BLANKS, BENDING EACH OF THE PARTIALLY CURED BLANKS LENGTHWISE INTO ARCUATE FORM AROUND A CYLINDRICAL METAL SURFACE SO THAT THE SPACED HIGH AREAS OF THE BLANK PROJECT RADIALLY OUTWARDLY AND TIGHTLY CLAMPING SAID BLANK THROUGHOUT ITS FULL RADIAL EXTENT THEREUPON BY AN OVERLYING FLEXIBLE METAL BAND WHICH PRESSES UPON ONLY SAID SPACED HIGH AREAS OF SAID BLANK, THEN COMPLETING THE CURE OF SAID LINING UNDER HEAT WHILE SIMULTANEOUSLY BONDING SAID LINING TO SAID METAL SURFACE.
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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |