US3215357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible mandrel
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1963-07-18
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Granted: 1965-11-02
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Expires: 1983-07-18
Abstract
No abstract record available.
Inventors
- 👤 Robert B Foulks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:41
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/34; B21C47/28; B21C47/30; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1074; Y10T279/1079
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
MANDREL ARRANGEMENT FOR ROTATABLY HOLDING COILS OF STRIP MATERIAL COMPRISING A SHAFT, A TUBULAR HOUSING ARRANGED ABOUT SAID SHAFT FOR LIMITED ROTARY MOVEMENT RELATIVE THERETO, A CAM SECURED TO SAID SHAFT ADJACENT SAID HOUSING AND HAVING A NUMBER OF LOBES EACH HAVING AN ASCENDING RAMP AND STUDS PROJECTING FROM EITHER SIDE THEREOF, A SEPARATE BRAKE SHOE SEGMENTS COATING WITH AND ARRANGED TO STRADDLE EACH OF SID LOBES AND HAVING AN INNER CAM FOLLOWER SURFACE IN CONTACT WITH THE SLIDABLE RELATIVE TO THE RAMP OF ITS COATING LOBE AND HAVING SHANKS ARRANGED TO STRADDLE SAID LOBE AND CONTAINING SLOTS ENGAGED OVER SAID STUDS FOR HOLDING SAID BRAKE SHOE SEGMENT WITH ITS CAM FOLLOWER SURFACE IN OPERATIVE ENGAGEMENT WITH SAID RAMP, AND MEANS CONNECTING EACH OF SAID SHOE SEGMENTS TO SAID HOUSING FOR YEILDABLY HOLDING SAID SHOE SEGMENTS IN A RETRACTED POSITION WHEREIN HIGH POINTS OF THE CAM RAMPS ENGAGE AREAS OF SAID CAM FOLLOWER SURFACES REMOTE FROM THE CENTER AXIS OF SAID SHAFT.
Claim 2
Dependent Claim
162 words
MANDREL ARRANGEMENT FOR ROTATABLY HOLDING COILS OF STRIP MATERIAL COMPRISING A SHAFT, A TUBULAR HOUSING ARRANGED ABOUT SAID SHAFT FOR LIMITED ROTARY MOVEMENT RELATIVE THERETO, A CAM SECURED TO SAID SHAFT ADJACENT SAID HOUSING AND HAVING A NUMBER OF LOBES EACH HAVING AN ASCENDING RAMP AND STUDS PROJECTING FROM EITHER SIDE THEREOF, A SEPARATE BRAKE SHOE SEGMENTS COATING WITH AND ARRANGED TO STRADDLE EACH OF SID LOBES AND HAVING AN INNER CAM FOLLOWER SURFACE IN CONTACT WITH THE SLIDABLE RELATIVE TO THE RAMP OF ITS COATING LOBE AND HAVING SHANKS ARRANGED TO STRADDLE SAID LOBE AND CONTAINING SLOTS ENGAGED OVER SAID STUDS FOR HOLDING SAID BRAKE SHOE SEGMENT WITH ITS CAM FOLLOWER SURFACE IN OPERATIVE ENGAGEMENT WITH SAID RAMP, AND MEANS CONNECTING EACH OF SAID SHOE SEGMENTS TO SAID HOUSING FOR YEILDABLY HOLDING SAID SHOE SEGMENTS IN A RETRACTED POSITION WHEREIN HIGH POINTS OF THE CAM RAMPS ENGAGE AREAS OF SAID CAM FOLLOWER SURFACES REMOTE FROM THE CENTER AXIS OF SAID SHAFT.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |