US3977289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saws and blades therefor
Assignee: National Research Development Corp UK
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Filing: 1975-04-24
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Granted: 1976-08-31
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Expires: 1995-04-24
Abstract
Abstract A powered saw developed for use in orthopaedic surgery has a strip-form blade carrier projecting from a casing in which it is driven at its inner end in an orbiting manner while further towards the carrier free end the carrier is constrained to allow longitudinal translation and pivotal movement. In consequence, the free end of the carrier, and all points of a blade projecting therefrom, are also subjected to an orbital motion. By appropriate location of teeth the blade can therefore cut in any combination of both sideways directions and also at its tip, and preferably has non-symmetrical teeth which are all raked in the same sense around the edge of the blade.
Inventors
- 👤 Michael Anthony Tuke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:46
CPC Classifications
B; B23; B23D; B23D61/00; B23D61/12; B23D61/128; A; A61; A61B; A61B17/00; A61B17/14; A61B17/142; A61B17/144; B23D49/00; B23D49/10; B23D49/16; B23D49/162; B23D49/165; B27; B27B; B27B19/00; B27B19/006; A61B2017/00535; A61B2017/00544; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9319; Y10T83/9457; Y10T83/9473; Y10T83/9481
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
41 words
A saw blade of strip form having a plurality of teeth extending in a sequence at least along both side edges and one end edge thereof, said teeth each being of nonsymmetrical form raked in a common direction around the blade.
Claim 2
Dependent Claim
41 words
A saw blade of strip form having a plurality of teeth extending in a sequence at least along both side edges and one end edge thereof, said teeth each being of nonsymmetrical form raked in a common direction around the blade.
Claim 3
Dependent Claim
41 words
A blade according to claim 1 which is longitudinally slotted in laterally off-set manner at its other end from said one end, and is formed with a hole adjacent said slot but laterally off-set in the opposite sense from said slot.
References Cited (Backward Citations)
US942920A
Cited
US709857A
Cited
US2747631A
Cited
US2849039A
Cited
US2904373A
Cited
US2987086A
Cited
US3477479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |