Patent US3576076A successfully refreshed from Google Patents.
US3576076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable rotatable tool and a holder therefor
Assignee: Individual
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Filing: 1969-06-13
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Granted: 1971-04-27
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Expires: 1989-06-13
Abstract
Abstract In combination an adjustable rotatable tool, e.g., dental drill and a holder therefor, the drill comprising a straight shank drill provided with graduated recesses along its shank, for selectively positioning the drill within the holder. The holder further comprising a locking device for releasably holding the drill at the selected position and being adapted to be itself mounted within a dental handpiece.
Inventors
- 👤 Bernard Weissman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:49
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/14; A61C1/142; A61C1/144; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17923
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
176 words
In combination, an adjustable dental drill and a holder therefor, said drill further comprising a straight shank drill provided with graduated recesses along its shank for selectively positioning said drill within said holder, said holder further comprising a locking device for releasably holding said drill at the selected position, said holder being adapted to be itself mounted within a dental handpiece, said locking device further comprising a hollow cylindrically shaped stem rotatably mounted within a circular collar therefor, opening means provided through one side of said collar, tensioning means mounted to said collar and extending through said opening means so that the rotation of said collar about said stem will resultingly rotate said tensioning means along with it, said tensioning means being tensionably positionable within each of said graduated recesses, said opening means further comprising an elongated passage and said tensioning means further comprising a spring having a generally semicircular cross section with a resulting flat surface thereof facing and extending into a bore provided by said hollow stem and positionable within each of said recesses.
Claim 2
Dependent Claim
176 words
In combination, an adjustable dental drill and a holder therefor, said drill further comprising a straight shank drill provided with graduated recesses along its shank for selectively positioning said drill within said holder, said holder further comprising a locking device for releasably holding said drill at the selected position, said holder being adapted to be itself mounted within a dental handpiece, said locking device further comprising a hollow cylindrically shaped stem rotatably mounted within a circular collar therefor, opening means provided through one side of said collar, tensioning means mounted to said collar and extending through said opening means so that the rotation of said collar about said stem will resultingly rotate said tensioning means along with it, said tensioning means being tensionably positionable within each of said graduated recesses, said opening means further comprising an elongated passage and said tensioning means further comprising a spring having a generally semicircular cross section with a resulting flat surface thereof facing and extending into a bore provided by said hollow stem and positionable within each of said recesses.
Claim 3
Dependent Claim
33 words
A device according to claim 1 wherein said spring is also shaped along its length into a straight portion extendable into said bore and a curved portion which is connected to said collar.
Claim 4
Dependent Claim
182 words
In combination a rotatable tool and a holder therefor, said tool including a straight shank portion, said shank portion being provided with at least one graduated recess along at least a part of its length for positioning said tool within said holder, said holder further comprising a locking device for releasably holding said tool, said holder being adapted to be itself mounted within rotation activating means therefor, said locking device including a stem rotatably mounted within a circular collar therefor, opening means provided through one side of said collar, and tensioning means mounted to said collar for rotation therewith, said tensioning means extending through said opening means so that rotation of said collar about said stem will resultingly rotate said tensioning means along with it between two positions, one of said two positions defining a locked position with said tensioning means being tensionally disposed within said recess for holding said tool, the other of said two positions defining a released position with said tensioning means being disposed out of said recess so that movement is permitted between said tool and said holder.
Claim 5
Dependent Claim
182 words
In combination a rotatable tool and a holder therefor, said tool including a straight shank portion, said shank portion being provided with at least one graduated recess along at least a part of its length for positioning said tool within said holder, said holder further comprising a locking device for releasably holding said tool, said holder being adapted to be itself mounted within rotation activating means therefor, said locking device including a stem rotatably mounted within a circular collar therefor, opening means provided through one side of said collar, and tensioning means mounted to said collar for rotation therewith, said tensioning means extending through said opening means so that rotation of said collar about said stem will resultingly rotate said tensioning means along with it between two positions, one of said two positions defining a locked position with said tensioning means being tensionally disposed within said recess for holding said tool, the other of said two positions defining a released position with said tensioning means being disposed out of said recess so that movement is permitted between said tool and said holder.
Claim 6
Dependent Claim
26 words
A device according to claim 3, wherein said shank portion is provided with a plurality of graduated recesses for selectively positioning said tool within said holder.
Claim 7
Dependent Claim
44 words
A device according to claim 3, wherein said tensioning means includes a spring, said stem being provided with a bore, said spring extending into said bore in said locked position and said spring being removed from projection into said bore in said released position.
Claim 8
Dependent Claim
41 words
A device according to claim 3, wherein additional means are provided for maintaining said tool in said locked position, said additional means including a releasable member engaging said tensioning means to hold said tensioning means within said recess of said tool.
Claim 9
Dependent Claim
143 words
In combination, an adjustable dental drill and holder therefor, said drill including a straight shank portion provided with graduated recesses along at least a part of its length for selectively positioning said drill within said holder, said holder further comprising a locking device for releasably holding said drill at the selected position and further comprising a hollow cylindrically shaped stem tightly rotatably mounted at one end thereof within a circular collar, opening means extending through one side of said collar, a spring mounted to said collar and extending through said opening means and tensionably positionable within each of said graduated recesses to provide a clutching action for said drill when said stem is rotated by said rotation activating means, wherein the rotation of said stem within said collar will in turn declutch said drill from the rotating influence of said rotation activating means.
Claim 10
Dependent Claim
143 words
In combination, an adjustable dental drill and holder therefor, said drill including a straight shank portion provided with graduated recesses along at least a part of its length for selectively positioning said drill within said holder, said holder further comprising a locking device for releasably holding said drill at the selected position and further comprising a hollow cylindrically shaped stem tightly rotatably mounted at one end thereof within a circular collar, opening means extending through one side of said collar, a spring mounted to said collar and extending through said opening means and tensionably positionable within each of said graduated recesses to provide a clutching action for said drill when said stem is rotated by said rotation activating means, wherein the rotation of said stem within said collar will in turn declutch said drill from the rotating influence of said rotation activating means.
Claim 11
Dependent Claim
17 words
A device according to claim 7 wherein said straight shank portion is wider than the drill portion.
Claim 12
Dependent Claim
17 words
A device according to claim 7 wherein said straight shank portion is narrower than the drill portion.
Claim 13
Dependent Claim
166 words
In combination, an adjustable dental drill and holder therefor, said drill including a straight shank portion provided with graduated recesses along at least a part of its length for selectively positioning said drill within said holder, said holder further comprising a locking device for releasably holding said drill at the selected position and further comprising a hollow cylindrically shaped stem tightly rotatably mounted at end thereof within a circular collar, opening means extending through one side of said collar, a spring mounted to said collar and extending through said opening means and tensionably positionable within each of said graduated recesses to provide a clutching action for said drill when said stem is rotated by said rotation activating means, and additional means for maintaining said drill in a secured clutched condition, said additional means further comprising a threaded pin threaded into said collar and projecting into a bore provided by said hollow stem and maintaining said spring in an engaged position within its respective selected graduated recess.
Claim 14
Dependent Claim
166 words
In combination, an adjustable dental drill and holder therefor, said drill including a straight shank portion provided with graduated recesses along at least a part of its length for selectively positioning said drill within said holder, said holder further comprising a locking device for releasably holding said drill at the selected position and further comprising a hollow cylindrically shaped stem tightly rotatably mounted at end thereof within a circular collar, opening means extending through one side of said collar, a spring mounted to said collar and extending through said opening means and tensionably positionable within each of said graduated recesses to provide a clutching action for said drill when said stem is rotated by said rotation activating means, and additional means for maintaining said drill in a secured clutched condition, said additional means further comprising a threaded pin threaded into said collar and projecting into a bore provided by said hollow stem and maintaining said spring in an engaged position within its respective selected graduated recess.
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |