US3096578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting brake shoe to lining
Assignee: Duff Norton Co Inc
•
Filing: 1959-02-16
•
Granted: 1963-07-09
•
Expires: 1979-02-16
Abstract
No abstract record available.
Inventors
- 👤 Basil S Sample
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:15
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/04; F16D69/0416; F16D2069/0425; F16D2069/0441; F16D2069/0483; F16D2069/0491
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD OF CASTING A BRAKE SHOE TO, AND RADIALLY TO ONE SIDE OF, A SEMI-CIRCULAR LINING, COMPRISING THE STEPS OF FORMING RADIALLY SPACED AND ORIENTED POCKETS EXTENDING FROM ONE SIDE PARTIALLY THROUGH THE LINING, SPRAYING DIE RELEASE IN A PRESSURE CASTING DIE ADAPTED TO RECEIVE THE LINING AND FORM THE BRAKE SHOE CONTIGUOUS TO THE LINING, PLACING THE LINING IN THE PRESSURE CASTING DIE, PREHEATING THE DIE TO A TEMPERATURE WITHIN THE RANGE OF 600* F. TO 700*F., FORCING MOLTEN METAL INTO THE BRAKE SHOE FORMING PORTION OF THE DIE CONTIGUOUS TO SAID ONE SIDE OF THE LINING AT A PRESSURE APPROXIMATING 1000 P.S.I., MAINTAINING THE PRESSURE FROM 10 TO 15 SECONDS, OPENING THE DIE AFTER PRESSURE IS RELEASED AND THE MOLTEN METAL FLOW CUT OFF AND REMOVING THE CAST SHOE AND INTEGRAL LINING THEREFROM.
Claim 2
Independent Claim
136 words
THE METHOD OF CASTING A BRAKE SHOE TO, AND RADIALLY TO ONE SIDE OF, A SEMI-CIRCULAR LINING, COMPRISING THE STEPS OF FORMING RADIALLY SPACED AND ORIENTED POCKETS EXTENDING FROM ONE SIDE PARTIALLY THROUGH THE LINING, SPRAYING DIE RELEASE IN A PRESSURE CASTING DIE ADAPTED TO RECEIVE THE LINING AND FORM THE BRAKE SHOE CONTIGUOUS TO THE LINING, PLACING THE LINING IN THE PRESSURE CASTING DIE, PREHEATING THE DIE TO A TEMPERATURE WITHIN THE RANGE OF 600* F. TO 700*F., FORCING MOLTEN METAL INTO THE BRAKE SHOE FORMING PORTION OF THE DIE CONTIGUOUS TO SAID ONE SIDE OF THE LINING AT A PRESSURE APPROXIMATING 1000 P.S.I., MAINTAINING THE PRESSURE FROM 10 TO 15 SECONDS, OPENING THE DIE AFTER PRESSURE IS RELEASED AND THE MOLTEN METAL FLOW CUT OFF AND REMOVING THE CAST SHOE AND INTEGRAL LINING THEREFROM.
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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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |