US3722808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chuck for rotatable members
Assignee: Eastman Kodak Co
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Filing: 1970-08-27
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Granted: 1973-03-27
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Expires: 1990-08-27
Abstract
Abstract Quick release chuck for chucking rotatable members or tubular cores wherein a flexible sleeve mounted on one end of a mandrel is caused to move axially inwardly and radially outwardly against an end of a rotatable member to hold the rotatable member in centered and seated position for rotation about its axis, and is movable axially outwardly and radially inwardly to enable the rotatable member to be withdrawn from the mandrel over the sleeve without removing any part of the chuck.
Inventors
- 👤 E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:28
CPC Classifications
F; F16; F16D; F16D1/00; B; B65; B65H; B65H54/00; B65H54/02; B65H54/40; B65H54/54; B65H54/543; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
358 words
A rotatable chuck for supporting a removable member for rotation about the axis of the member, the chuck at its inner end adapted to be supported by and connected to a rotatable drive means, said chuck comprising: a mandrel over the outer end of which the removable member may be moved into seated position on the mandrel and withdrawn from the mandrel and defining surfaces for supporting said removable member when in said seated position; said mandrel at its inner end having an annular shoulder defining a tapered outer surface and at its outer end a coneshaped flexible sleeve defining a tapered outer surface, the two tapered outer surfaces being in opposed relation to each other and being adapted to wedgingly engage therebetween and to center on the axis of rotation the removable member; said flexible sleeve being adapted to be axially flexed inwardly toward the other tapered outer surface and at the same time flexed radially outwardly into wedging engagement with said removable member, and to be in a nonflexed contracted condition axially outwardly of and radially inwardly of and out of engagement with the removable member so as to enable said removable member to be moved into said seated position and to be withdrawn from the mandrel in sliding relation over the mandrel; movable means adapted to be moved into engagement with said flexible sleeve and to cause said flexible sleeve to flex axially inwardly and flex radially outwardly into said wedging engagement with the removable member, thereby urging the removable member into centered position on said axis of rotation and moving the removable member into said seated position, and to be moved out of engagement and thereby enable said flexible sleeve to return to said axially outwardly and nonflexed contracted conditioN; and spring means adapted to normally urge said movable means axially inwardly of the mandrel, and further including pneumatic means adapted upon actuation to urge said movable means axially outwardly of the mandrel, and wherein said movable means is spring-biased into engagement with said flexible sleeve and is pneumatically operated to move out of engagement with said flexible sleeve and against the spring-biased action.
Claim 2
Dependent Claim
358 words
A rotatable chuck for supporting a removable member for rotation about the axis of the member, the chuck at its inner end adapted to be supported by and connected to a rotatable drive means, said chuck comprising: a mandrel over the outer end of which the removable member may be moved into seated position on the mandrel and withdrawn from the mandrel and defining surfaces for supporting said removable member when in said seated position; said mandrel at its inner end having an annular shoulder defining a tapered outer surface and at its outer end a coneshaped flexible sleeve defining a tapered outer surface, the two tapered outer surfaces being in opposed relation to each other and being adapted to wedgingly engage therebetween and to center on the axis of rotation the removable member; said flexible sleeve being adapted to be axially flexed inwardly toward the other tapered outer surface and at the same time flexed radially outwardly into wedging engagement with said removable member, and to be in a nonflexed contracted condition axially outwardly of and radially inwardly of and out of engagement with the removable member so as to enable said removable member to be moved into said seated position and to be withdrawn from the mandrel in sliding relation over the mandrel; movable means adapted to be moved into engagement with said flexible sleeve and to cause said flexible sleeve to flex axially inwardly and flex radially outwardly into said wedging engagement with the removable member, thereby urging the removable member into centered position on said axis of rotation and moving the removable member into said seated position, and to be moved out of engagement and thereby enable said flexible sleeve to return to said axially outwardly and nonflexed contracted conditioN; and spring means adapted to normally urge said movable means axially inwardly of the mandrel, and further including pneumatic means adapted upon actuation to urge said movable means axially outwardly of the mandrel, and wherein said movable means is spring-biased into engagement with said flexible sleeve and is pneumatically operated to move out of engagement with said flexible sleeve and against the spring-biased action.
Claim 3
Dependent Claim
343 words
A rotatable chuck for supporting a removable member for rotation about the axis of the member, the chuck at its inner end adapted to be supported by and connected to a rotatable means, said chuck comprising: a mandrel over the outer end of which the removable member may be moved into seated position on the mandrel and withdrawn from the mandrel and defining surfaces for supporting said removable member when in seated position on the mandrel and having at its inner end an annular shoulder defining a tapered outer surface; fluid cylinder means connected to the outer end of the mandrel and including a piston axially movable inwardly and outwardly of the mandrel outer end, spring means normally urging said piston inwardly of the mandrel outer end and means for introducing fluid into the cylinder means to cause the piston to be forced outwardly of the mandrel outer end against the effect of the spring means; a frusto-conical flexible sleeve connected to said fluid cylinder means and defining a tapered outer surface that is in opposed relation to the tapered outer surface on the mandrel, the two tapered outer surfaces being adapted to wedgingly engage therebetween and to center on the axis of rotation the rotatable member; said piston further having means for engaging said flexible sleeve and thereby causing said sleeve to be axially flexed inwardly toward the other tapered outer surface and flexed radially outwardly into wedging engagement with said removable member when said spring means urges said piston inwardly of the mandrel outer end; and operating means operable for enabling said fluid to be introduced into said fluid cylinder means and for releasing said fluid from said fluid cylinder means, said flexible sleeve upon fluid being introduced into said cylinder means being enabled to flex axially outwardly and to a non-flexed condition radially inwardly of and out of engagement with the removable member so as to enable said removable member to be moved into said seated position and to be withdrawn from the mandrel in sliding relation over the mandrel.
Claim 4
Dependent Claim
343 words
A rotatable chuck for supporting a removable member for rotation about the axis of the member, the chuck at its inner end adapted to be supported by and connected to a rotatable means, said chuck comprising: a mandrel over the outer end of which the removable member may be moved into seated position on the mandrel and withdrawn from the mandrel and defining surfaces for supporting said removable member when in seated position on the mandrel and having at its inner end an annular shoulder defining a tapered outer surface; fluid cylinder means connected to the outer end of the mandrel and including a piston axially movable inwardly and outwardly of the mandrel outer end, spring means normally urging said piston inwardly of the mandrel outer end and means for introducing fluid into the cylinder means to cause the piston to be forced outwardly of the mandrel outer end against the effect of the spring means; a frusto-conical flexible sleeve connected to said fluid cylinder means and defining a tapered outer surface that is in opposed relation to the tapered outer surface on the mandrel, the two tapered outer surfaces being adapted to wedgingly engage therebetween and to center on the axis of rotation the rotatable member; said piston further having means for engaging said flexible sleeve and thereby causing said sleeve to be axially flexed inwardly toward the other tapered outer surface and flexed radially outwardly into wedging engagement with said removable member when said spring means urges said piston inwardly of the mandrel outer end; and operating means operable for enabling said fluid to be introduced into said fluid cylinder means and for releasing said fluid from said fluid cylinder means, said flexible sleeve upon fluid being introduced into said cylinder means being enabled to flex axially outwardly and to a non-flexed condition radially inwardly of and out of engagement with the removable member so as to enable said removable member to be moved into said seated position and to be withdrawn from the mandrel in sliding relation over the mandrel.
Claim 5
Dependent Claim
227 words
A chuck for receiving thereon a rotatable member and being connected at its inner end to a spindle, said chuck comprising: a mandrel; said mandrel having at its inner end a tapered outer surface adapted to be wedgingly engaged thereagainst by one end of the rotatable member, and having at its outer end flexible means adapted in one condition to be flexed axially inwardly and radially outwardly into wedging engagement against the other end of the rotatable member to move said rotatable member against the inner end tapered outer surface, and adapted in a second condition to flex radially inwardly of and axially outward of engagement with the rotatable member and thereby enable the rotatable member to be withdrawn from the mandrel over the flexible means; means movable against said flexible means and thereby causing said flexible means to be moved into said one condition and movable away from said flexible means to enable said flexible means to move into said second condition; and spring means adapted to normally urge said movable means axially inwardly of the mandrel, and further including pneumatic means adapted upon actuation to urge said movable means axially outwardly of the mandrel, and wherein said movable means is spring-biased into engagement with said flexible means and is pneumatically operated to move out of engagement with said flexible means and against the spring-biased action.
Claim 6
Dependent Claim
227 words
A chuck for receiving thereon a rotatable member and being connected at its inner end to a spindle, said chuck comprising: a mandrel; said mandrel having at its inner end a tapered outer surface adapted to be wedgingly engaged thereagainst by one end of the rotatable member, and having at its outer end flexible means adapted in one condition to be flexed axially inwardly and radially outwardly into wedging engagement against the other end of the rotatable member to move said rotatable member against the inner end tapered outer surface, and adapted in a second condition to flex radially inwardly of and axially outward of engagement with the rotatable member and thereby enable the rotatable member to be withdrawn from the mandrel over the flexible means; means movable against said flexible means and thereby causing said flexible means to be moved into said one condition and movable away from said flexible means to enable said flexible means to move into said second condition; and spring means adapted to normally urge said movable means axially inwardly of the mandrel, and further including pneumatic means adapted upon actuation to urge said movable means axially outwardly of the mandrel, and wherein said movable means is spring-biased into engagement with said flexible means and is pneumatically operated to move out of engagement with said flexible means and against the spring-biased action.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |