Patent US3266535A successfully refreshed from Google Patents.
US3266535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety blade clamping means for portable power saws
Assignee: Singer Co
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Filing: 1964-06-01
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Granted: 1966-08-16
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Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 Kenneth G Brodie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:19
CPC Classifications
B; B27; B27B; B27B5/00; B27B5/29; B27B5/30; B27B5/32; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7747; Y10T83/929; Y10T83/9372; Y10T83/9377; Y10T83/9379
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A POWER DRIVE TOOL, THE COMBINATION OF A HOUSING, A SPINDLE JOURNALED IN SAID HOUSING, SAID SPINDLE HAVING AN EXTERNALLY ACCESSIBLE BLIND AXIAL BORE AND A TERMINAL PORTION PRESENTING A NON-CIRCULAR CROSS SECTION, FIRST AND SECOND SPACERS FORMED WITH NON-CIRCULAR CENTRAL OPENINGS AND SLIDABLY RECEIVED ON SAID NON-CIRCULAR TERMINAL PORTION OF SAID SPINDLE TO ROTATE THEREWITH, A SAW BLADE FREE TO TURN ON SAID SPINDLE BUT HELD FRICTIONALLY CLAMPED BETWEEN SAID SPACERS, A HEADED CLAMPING SCREW HAVING AN AXIAL BORE AND TAPPED INTO SAID SPINDLE BORE, A SPRING WASHER BETWEEN THE HEAD OF SAID CLAMPING SCREW AND ONE OF SAID SPACERS, AND MEANS FOR ADJUSTABLY LIMITING THE AXIAL MOVEMENT OF SAID CLAMPING SCREW INTO THE SPINDLE BORE INCLUDING A SET SCREW TAPPED INTO SAID SPINDLE
Claim 2
Dependent Claim
126 words
IN A POWER DRIVE TOOL, THE COMBINATION OF A HOUSING, A SPINDLE JOURNALED IN SAID HOUSING, SAID SPINDLE HAVING AN EXTERNALLY ACCESSIBLE BLIND AXIAL BORE AND A TERMINAL PORTION PRESENTING A NON-CIRCULAR CROSS SECTION, FIRST AND SECOND SPACERS FORMED WITH NON-CIRCULAR CENTRAL OPENINGS AND SLIDABLY RECEIVED ON SAID NON-CIRCULAR TERMINAL PORTION OF SAID SPINDLE TO ROTATE THEREWITH, A SAW BLADE FREE TO TURN ON SAID SPINDLE BUT HELD FRICTIONALLY CLAMPED BETWEEN SAID SPACERS, A HEADED CLAMPING SCREW HAVING AN AXIAL BORE AND TAPPED INTO SAID SPINDLE BORE, A SPRING WASHER BETWEEN THE HEAD OF SAID CLAMPING SCREW AND ONE OF SAID SPACERS, AND MEANS FOR ADJUSTABLY LIMITING THE AXIAL MOVEMENT OF SAID CLAMPING SCREW INTO THE SPINDLE BORE INCLUDING A SET SCREW TAPPED INTO SAID SPINDLE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |