Jaws, guiding base plates and adjusting mechanism for chucks

Claim 2

A chuck suitable for use in holding an instrument along a check axis and comprising a pair of jaws, each of said jaws having first and second rows of spaced apart teeth, said teeth of said first row aligned at a prescribed angle to teeth of said second row, each of said teeth being in longitudinal alignment with other of said teeth in a same row, said teeth of each said row of one of said pair of jaws longitudinally occurring alternately with respect to one another and with respect to meshable teeth of a second one of said pair of jaws, means guidedly mounting said jaws for an axially convergent movement to effect on adjustable meshing of teeth of each of said jaws to define an adjustable corridor of a prescribed angle for holding said instrument, said mounting means including axially converging channel means, said jaws including portions guidedly mounted within said channel means, each of said jaws having means defining at least one guide bore, adjustment means moving said jaws, said adjustment means including a body having means defining at least one bore therein, and pin means slidably secured in said at least one bore of each of said jaws and said body for guiding said meshing of said teeth of said jaws.

Claim 3

The invention of claim 1 wherein said first and second rows of aligned teeth define a right-angled shaped surface portion of said adjustable corridor, said mounting means guidedly controls movement of said jaws for said meshing of said teeth to define an adjustable and constant square shape of said corridor.

Claim 4

The invention of claim 1 wherein each of said jaw portions includes a unitary guiding platform protruding from said teeth thereof and having shoulder extensions, each of said guiding platforms having said means defining said at least one bore, said body having said at least one bore in aligned registration with said at least one bore of each of said guiding platforms and said pin means slidably secured within said at least one bore of said platforms and said body for guiding meshing of said teeth of said jaws, said mounting means comprises a pair of base plates, each of said plates having said channel means for guiding an aligned movement of each of said jaws for said adjustable meshing of said teeth, and said adjustment means being supported within said plates.

Claim 5

The invention of claim 3 wherein said channel means comprises wall means defining a pair of guide channels.

Claim 6

The invention of claim 4 wherein said body includes means defining a threaded aperture, a shaft having an exterior threaded portion for threadedly and matingly interfitting with said threaded aperture, means coupling said body to each of said jaws and means for rotating said shaft threadedly to move said threaded portion thereof within said aperture and to urge said body and coupling means for controllably moving each of said shoulder extensions within respective ones of said channels to adjust said meshing of said teeth and the dimensions of said corridor for holding said instrument.

Claim 7

The invention of claim 1 wherein said channel means includes wall means projecting to define a pair of guide channels of a "V" shape, and each of said jaws includes a guide platform extension angularly protruding from said rows of teeth and having means forming said pair of shoulder extensions.

Claim 8

The invention of claim 6 wherein each of said first and second rows of aligned teeth define a right-angled "V" shaped surface portion of said adjustable corridor and said aligned teeth of each of said jaws are in meshing registration for defining an adjustable and constant square shape of said corridor during all said rotating of said shaft.

Claim 9

A chuck comprising an outer housing having a cylindrical inner bore, a pair of base plates secured within said bore, each of said plates having wall means defining a pair of channels arranged in a "V" shape and extending from a first end to second ends of said each plate and of said bore, a pair of jaws, each of said jaws having first and second rows of spaced apart teeth, said teeth of said first row aligned at a right angle to teeth of said second row, each of said teeth having substantially a cross-sectional triangular shape and in longitudinal alignment with other of said teeth in a same row, said teeth of each said row of one of said pair of jaws longitudinally occurring alternately with respect to one another and with respect to meshable teeth in the rows of another of said pair of jaws, each of said jaws further having a unitary guiding platform arcuately protruding from said teeth thereof and having shoulder extensions each of which guidedly moves in an individual one of said channels, each said guiding platform having means defining a pair of spaced apart bores, adjustment means comprising a wedge-shaped body having means defining another pair of spaced apart bores in aligned registration with said bores of each said guiding platform and a pair of dowel pins each of which slideably moves in said bore of one of said platforms and one of said bores of said body and is secured within said bore of another one of said platforms for guiding a meshing closure and opening of said teeth of said jaws, said wall means of each of said plates including means defining a cavity in each of said channels for guidedly receiving one of said dowel pins during a longitudinal and latitudinal movement thereof, each of said plates further having a raised wedge-shaped platform located between said channels thereof for slideably supporting said wedge-shaped body and a platform extension protruding from said wedge-shaped platform and comprising means defining a semicylindrical bore and means defining a cavity, said body having a threaded bore oriented toward said semicylindrical bore, said adjustment means further comprising a shaft having a left-hand threaded segment matingly interfitted with said threaded bore and a right-hand threaded segment rotatably housed within said semicylindrical bore of each of said plates and extending to an exterior of said plates and said housing, a jam nut frictionally secured within said cavity of each said plate and matingly interfitting with said right-hand threaded segment of said shaft and an adjusting knob secured to said shaft exterior to said housing and said plates for rotating said right-hand threaded segment of said shaft interfittingly and longitudinally through said nut and said left-hand threaded segment of said shaft interfittingly and longitudinally through said threaded bore of said body for urging said body longitudinally against said dowel pins and said dowel pins against said guiding platforms guidedly to move said shoulder extensions of each of said jaws in respective ones of said channels for meshingly closing and opening said teeth of each of said jaws and providing an adjustable and constant square shaped corridor for receivably centering and holding an instrument.

Claim 10

A chuck comprising an outer housing having a cylindrical inner bore, a pair of base plates secured within said bore, each of said plates having wall means defining a pair of channels arranged in a "V" shape and extending from a first end to second ends of said each plate and of said bore, a pair of jaws, each of said jaws having first and second rows of spaced apart teeth, said teeth of said first row aligned at a right angle to teeth of said second row, each of said teeth having substantially a cross-sectional triangular shape and in longitudinal alignment with other of said teeth in a same row, said teeth of each said row of one of said pair of jaws longitudinally occurring alternately with respect to one another and with respect to meshable teeth in the rows of another of said pair of jaws, each of said jaws further having a unitary guiding platform arcuately protruding from said teeth thereof and having shoulder extensions each of which guidedly moves in an individual one of said channels, each said guiding platform having means defining a pair of spaced apart bores, adjustment means comprising a wedge-shaped body having means defining another pair of spaced apart bores in aligned registration with said bores of each said guiding platform and a pair of dowel pins each of which slideably moves in said bore of one of said platforms and one of said bores of said body and is secured within said bore of another one of said platforms for guiding a meshing closure and opening of said teeth of said jaws, said wall means of each of said plates including means defining a cavity in each of said channels for guidedly receiving one of said dowel pins during a longitudinal and latitudinal movement thereof, each of said plates further having a raised wedge-shaped platform located between said channels thereof for slideably supporting said wedge-shaped body and a platform extension protruding from said wedge-shaped platform and comprising means defining a semicylindrical bore and means defining a cavity, said body having a threaded bore oriented toward said semicylindrical bore, said adjustment means further comprising a shaft having a left-hand threaded segment matingly interfitted with said threaded bore and a right-hand threaded segment rotatably housed within said semicylindrical bore of each of said plates and extending to an exterior of said plates and said housing, a jam nut frictionally secured within said cavity of each said plate and matingly interfitting with said right-hand threaded segment of said shaft and an adjusting knob secured to said shaft exterior to said housing and said plates for rotating said right-hand threaded segment of said shaft interfittingly and longitudinally through said nut and said left-hand threaded segment of said shaft interfittingly and longitudinally through said threaded bore of said body for urging said body longitudinally against said dowel pins and said dowel pins against said guiding platforms guidedly to move said shoulder extensions of each of said jaws in respective ones of said channels for meshingly closing and opening said teeth of each of said jaws and providing an adjustable and constant square shaped corridor for receivably centering and holding an instrument.

Claim 11

A chuck suitable for use in holding an instrument and comprising a pair of jaws, a first one of said jaws having plural rows of spaced apart teeth, a second one of said jaws having a predetermined number of teeth, each of said jaws having teeth of a first one of its rows aligned at a prescribed angle to said teeth of a second one of its rows, and means guidedly mounting said jaws for an adjustable meshing of teeth of each of said jaws to define an adjustable corridor of a prescribed shape for holding said instrument, said mounting means guidedly controlling movement of said jaws longitudinally and latitudinally for said meshing and comprises a pair of base plates, each of said plates having channel means for guiding an aligned movement of each of said jaws for said adjustable meshing of said teeth, and adjustment means supported within said plates and coupled to each of said jaws for controllably moving said jaws to adjust said meshing and the dimensions of said corridor for holding said instrument, said channel means comprises wall means defining a pair of guide channels and each of said jaws comprises a pair of shoulder extensions, each of which is movably secured in a predetermined one of said channels, said adjustment means comprises a body having means defining a threaded aperture, a shaft having an exterior threaded portion for threadedly and matingly interfitting with said threaded aperture, means coupling said body to each of said jaws and means for rotating said shaft threadedly to move said threaded portion thereof within said aperture and to urge said body and said coupling means for controllably moving each of said shoulder extensions within respective ones of said channels to adjust said meshing of said teeth and the dimensions of said corridor for holding said instrument, said threaded portion of said shaft comprises a left-hand threaded segment, said shaft further includes another threaded exterior portion having a right-hand threaded segment and said adjustment means further comprises a threaded means secured within said base plate and threadedly interfitting with said right-hand threaded segment of said shaft.

Claim 12

A chuck suitable for use in holding an instrument and comprising a pair of jaws, a first one of said jaws having plural rows of spaced apart teeth, a second one of said jaws having a predetermined number of teeth, each of said jaws having teeth of a first one of its rows aligned at a prescribed angle to said teeth of a second one of its rows, and means guidedly mounting said jaws for an adjustable meshing of teeth of each of said jaws to define an adjustable corridor of a prescribed shape for holding said instrument, said mounting means guidedly controlling movement of said jaws longitudinally and latitudinally for said meshing and comprises a pair of base plates, each of said plates having channel means for guiding an aligned movement of each of said jaws for said adjustable meshing of said teeth, and adjustment means supported within said plates and coupled to each of said jaws for controllably moving said jaws to adjust said meshing and the dimensions of said corridor for holding said instrument, said channel means comprises wall means defining a pair of guide channels and each of said jaws comprises a pair of shoulder extensions, each of which is movably secured in a predetermined one of said channels, said adjustment means comprises a body having means defining a threaded aperture, a shaft having an exterior threaded portion for threadedly and matingly interfitting with said threaded aperture, means coupling said body to each of said jaws and means for rotating said shaft threadedly to move said threaded portion thereof within said aperture and to urge said body and said coupling means for controllably moving each of said shoulder extensions within respective ones of said channels to adjust said meshing of said teeth and the dimensions of said corridor for holding said instrument, said threaded portion of said shaft comprises a left-hand threaded segment, said shaft further includes another threaded exterior portion having a right-hand threaded segment and said adjustment means further comprises a threaded means secured within said base plate and threadedly interfitting with said right-hand threaded segment of said shaft.

Claim 13

The invention of claim 9 wherein each of said base plates further comprises a platform extension having means defining a semicylindrical bore for rotatably housing said shaft and means defining a cavity, and said threaded means comprises a threaded jam nut frictionally secured in each said cavity of each said plate and threadedly interfitting with said right-hand threaded segment of said shaft.

Claim 14

The invention of claim 10 wherein said body comprises means defining at least one guide hole, each of said jaws comprises at least one guide hole, and said coupling means comprises at least one dowel pin slideably extending through said guide hole of said body and said guide hole of each said jaw for guidedly urging a movement of said jaw shoulder extensions within said channels adjustably to mesh said teeth of each of said jaws in response to said rotating of said shaft.

Claim 15

The invention of claim 11 wherein said body comprises a wedge-shaped device having a pair of front side surfaces between which extends said at least one guide hole of said body and a rearward surface through which said threaded aperture extends, and each of said base plates further comprises a raised shelf surface slideably supporting said body.