Patent US3438683A successfully refreshed from Google Patents.
US3438683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trunnion for linear antifriction bearings
Assignee: Individual
•
Filing: 1965-02-19
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Granted: 1969-04-15
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Expires: 1985-02-19
Abstract
No abstract record available.
Inventors
- 👤 John B Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:17
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/04; F16C29/06; F16C29/0614; F16C29/0616; F16C29/0619; F16C29/045; Y; Y10; Y10T; Y10T403/00; Y10T403/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A SELF-LOCKING, ADJUSTABLE CANTILEVER TRUNNION FOR A LINEAR MOTION BEARING COMPRISING AN OUTER CYLINDRICAL BEARING PORTION TO RECEIVE AND SUPPORT THE BEARING ASSEMBLY, AN INNER CYLINDRICAL PORTION ECCENTRIC WITH RESPECT TO SAID OUTER BEARING PORTION, SAID INNER PORTION BEING LONGITUDINALLY SPLIT NEAR THE INNER END THEREOF WITH SAID FORMED SPLIT PORTION HAVING AN INTERIOR TAPERED SURFACE, A SHOULDER PORTION BETWEEN SAID OUTER BEARING PORTION AND SAID INNER CYLINDRICAL PORTION, SAID SHOULDER PORTION INCLUDING MEANS TO RECEIVE A TOOL FOR ROTATION OF SAID TRUNNION TO ADJUST THE ROTATIONAL POSITION OF SAID OUTER BEARING PORTION, AN EXPANSION CONE WITHIN SAID SPLIT PORTION OF SAID TRUNNION, STEM MEANS CONNECTED AT ONE END TO SAID EXPANSION CONE AND EXTENDING AXIALLY THROUGH SAID INNER CYLINDRICAL PORTION AND SAID OUTER BEARING PORTION, SAID STEM MEANS INCLUDING MEANS TO DRAW SAID EXPANSION CONE INTO AND THEREBY EXPAND SAID SPLIT PORTION AND MEANS DISPOSED BETWEEN SAID CONE AND SAID SPLIT PORTION FOR PREVENTING RELATIVE ROTATION BETWEEN SAID EXPANSION CONE AND SAID SPLIT PORTION OF SAID TRUNNION TO PERMIT SAID SPLIT PORTION TO BE EXPANDED WITHOUT CHANGING THE POSITION OF SAID BEARING PORTION OF SAID TRUNNION.
Claim 2
Dependent Claim
187 words
A SELF-LOCKING, ADJUSTABLE CANTILEVER TRUNNION FOR A LINEAR MOTION BEARING COMPRISING AN OUTER CYLINDRICAL BEARING PORTION TO RECEIVE AND SUPPORT THE BEARING ASSEMBLY, AN INNER CYLINDRICAL PORTION ECCENTRIC WITH RESPECT TO SAID OUTER BEARING PORTION, SAID INNER PORTION BEING LONGITUDINALLY SPLIT NEAR THE INNER END THEREOF WITH SAID FORMED SPLIT PORTION HAVING AN INTERIOR TAPERED SURFACE, A SHOULDER PORTION BETWEEN SAID OUTER BEARING PORTION AND SAID INNER CYLINDRICAL PORTION, SAID SHOULDER PORTION INCLUDING MEANS TO RECEIVE A TOOL FOR ROTATION OF SAID TRUNNION TO ADJUST THE ROTATIONAL POSITION OF SAID OUTER BEARING PORTION, AN EXPANSION CONE WITHIN SAID SPLIT PORTION OF SAID TRUNNION, STEM MEANS CONNECTED AT ONE END TO SAID EXPANSION CONE AND EXTENDING AXIALLY THROUGH SAID INNER CYLINDRICAL PORTION AND SAID OUTER BEARING PORTION, SAID STEM MEANS INCLUDING MEANS TO DRAW SAID EXPANSION CONE INTO AND THEREBY EXPAND SAID SPLIT PORTION AND MEANS DISPOSED BETWEEN SAID CONE AND SAID SPLIT PORTION FOR PREVENTING RELATIVE ROTATION BETWEEN SAID EXPANSION CONE AND SAID SPLIT PORTION OF SAID TRUNNION TO PERMIT SAID SPLIT PORTION TO BE EXPANDED WITHOUT CHANGING THE POSITION OF SAID BEARING PORTION OF SAID TRUNNION.
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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) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |