Patent US3344690A successfully refreshed from Google Patents.
US3344690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring bar assembly
Assignee: EVEREDE TOOL Co
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Filing: 1965-09-17
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Granted: 1967-10-03
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Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Proksa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:20
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03403; B23B29/03407; B23B31/00; B23B31/02; B23B31/10; B23B31/113; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2202; Y10T407/2206; Y10T407/23; Y10T407/28; Y10T408/00; Y10T408/89; Y10T408/907; Y10T408/909; Y10T408/9098; Y10T408/90993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
A BORING BAR ASSEMBLY TO BE INSERTED INTO THE ROTATABLE HEAD OF A MACHINE FOR DRIVING THE BORING BAR, SAID ASSEMBLY COMPRISING: A SHANK PIECE FOR CARRYING TOOL BITS ONLY AT THE OUTER END THEREOF AND HAVING AN INNER END FOR NOUNTING THE SHANK PIECE IN SAID ROTATABLE HEAD AND AN OUTER TOOL BIT CARRYING END, A RELATIVELY SHORT HEAD PIECE RELEASABLY ATTACHED ONLY TO THE ENDMOST SURFACE AT THE OUTER END OF THE SHANK PIECE AND ADJUSTABLY SUPPORTING A BORING TOOL BIT LATERALLY EXTENDING THEREFROM WHICH TOOL BIT IS TO BE ACCURATELY ADJUSTED TO A PROPER SPACING FROM THE CENTER OF THE HEAD PIECE BY MEASURING INSTRUMENTS USED ON THE HEAD PIECE AND TOOL BIT WHEN THE HEAD PIECE IS REMOVED FROM THE SHANK PIECE, AND COOPERATING MEANS ON THE INNER END OF THE HEAD PIECE AND THE COOPERATING MEANS ON THE OUTER END OF THE SHANK PIECE FOR REMOVABLY INTERCONNECTING THE SAME ALONG THE LONGITUDINAL AXIS OF THE BORING BAR ASSEMBLY AND FOR ESTABLISHING AN ACCURATE CONCENTRICITY BETWEEN THE HEAD PIECE AND THE SHANK PIECE, SAID COOPERATING MEANS COMPRISING TELESCOPING TAPERED PORTIONS ON THE HEAD AND SHANK PIECES LONGITUDINALLY TIGHTLY FITTED TOGETHER, THE DEGREE OF TAPER THEREOF BEING AT LEAST ABOUT 16 DEGRES SO THAT HEAD PIECE CAN BE READILY REMOVED BY MAN-
Claim 2
Dependent Claim
215 words
A BORING BAR ASSEMBLY TO BE INSERTED INTO THE ROTATABLE HEAD OF A MACHINE FOR DRIVING THE BORING BAR, SAID ASSEMBLY COMPRISING: A SHANK PIECE FOR CARRYING TOOL BITS ONLY AT THE OUTER END THEREOF AND HAVING AN INNER END FOR NOUNTING THE SHANK PIECE IN SAID ROTATABLE HEAD AND AN OUTER TOOL BIT CARRYING END, A RELATIVELY SHORT HEAD PIECE RELEASABLY ATTACHED ONLY TO THE ENDMOST SURFACE AT THE OUTER END OF THE SHANK PIECE AND ADJUSTABLY SUPPORTING A BORING TOOL BIT LATERALLY EXTENDING THEREFROM WHICH TOOL BIT IS TO BE ACCURATELY ADJUSTED TO A PROPER SPACING FROM THE CENTER OF THE HEAD PIECE BY MEASURING INSTRUMENTS USED ON THE HEAD PIECE AND TOOL BIT WHEN THE HEAD PIECE IS REMOVED FROM THE SHANK PIECE, AND COOPERATING MEANS ON THE INNER END OF THE HEAD PIECE AND THE COOPERATING MEANS ON THE OUTER END OF THE SHANK PIECE FOR REMOVABLY INTERCONNECTING THE SAME ALONG THE LONGITUDINAL AXIS OF THE BORING BAR ASSEMBLY AND FOR ESTABLISHING AN ACCURATE CONCENTRICITY BETWEEN THE HEAD PIECE AND THE SHANK PIECE, SAID COOPERATING MEANS COMPRISING TELESCOPING TAPERED PORTIONS ON THE HEAD AND SHANK PIECES LONGITUDINALLY TIGHTLY FITTED TOGETHER, THE DEGREE OF TAPER THEREOF BEING AT LEAST ABOUT 16 DEGRES SO THAT HEAD PIECE CAN BE READILY REMOVED BY MAN-
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |