Patent US3272041A successfully refreshed from Google Patents.
US3272041A
Expired / Lapsed
US
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Expanding arbors
Assignee: Nachi Machining Technology Co
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Filing: 1965-06-28
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Granted: 1966-09-13
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Russel W Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:20
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/40; B23B31/4073; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1041; Y10T82/00; Y10T82/26; Y10T82/266; Y10T82/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
EXPANDING ARBOR SUPPORT MEANS COMPRISING A FIRST SUPPORT MEMBER INCLUDING A CENTRAL CIRCULAR RECESS TO SERVE AS PILOTING MEANS, AND A FLAT ANNULAR WORK SUPPORT SURFACE CONCENTRIC WITH SAID RECESS, A SECOND SUPPORT MEMBER, AN ELONGATED PLUG CARRIED BY SAID SECOND SUPPORT MEMBER IN AXIAL ALIGNMENT WITH THE RECESS IN SAID FIRST SUPPORT MEMBER, A SLEEVE SLIDABLE LONGITUDINALLY ON SAID PLUG, RADIALLY MOVABLE KEYS IN SAID SLEEVE, KEY CAMMING SURFACES ON SAID PLUG, SPRING MEANS BETWEEN SAID SLEEVE AND SAID SECOND SUPPORT MEMBER, AND STOP MEANS INTERPOSED BETWEEN SAID SLEEVE AND PLUG TO LIMIT MOVEMENT OF SAID SLEEVE ON SAID PLUG.
Claim 2
Dependent Claim
101 words
EXPANDING ARBOR SUPPORT MEANS COMPRISING A FIRST SUPPORT MEMBER INCLUDING A CENTRAL CIRCULAR RECESS TO SERVE AS PILOTING MEANS, AND A FLAT ANNULAR WORK SUPPORT SURFACE CONCENTRIC WITH SAID RECESS, A SECOND SUPPORT MEMBER, AN ELONGATED PLUG CARRIED BY SAID SECOND SUPPORT MEMBER IN AXIAL ALIGNMENT WITH THE RECESS IN SAID FIRST SUPPORT MEMBER, A SLEEVE SLIDABLE LONGITUDINALLY ON SAID PLUG, RADIALLY MOVABLE KEYS IN SAID SLEEVE, KEY CAMMING SURFACES ON SAID PLUG, SPRING MEANS BETWEEN SAID SLEEVE AND SAID SECOND SUPPORT MEMBER, AND STOP MEANS INTERPOSED BETWEEN SAID SLEEVE AND PLUG TO LIMIT MOVEMENT OF SAID SLEEVE ON SAID PLUG.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |