Patent US3552673A successfully refreshed from Google Patents.
US3552673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanding chuck
Assignee: Individual
•
Filing: 1969-04-09
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Granted: 1971-01-05
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Expires: 1989-04-09
Abstract
Abstract An automatically expanding chuck for supporting tubular rolls which has sections that can be expanded to grip the interior of a tubular roll, the chuck has outer sections which are expanded radially outward by cams. The cams are in turn actuated by the end surface of the roll in which the chuck is inserted.
Inventors
- 👤 William J Evers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:38
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/248; B65H75/2484
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
176 words
An automatic chuck comprising a rotatable mounting member, a plurality of jaw plates extending in direction along the axis of rotation of the mounting member and positioned so that together they substantially surround said mounting member and extend outwardly therefrom to together form an outer chucking surface means, and actuating means for each of said jaw plates, said actuating means comprising wedge means which expand the jaw plates outwardly upon axial movement thereof, said wedge means for each jaw plate comprising separate inner wedges engaging said mounting member and outer wedges engaging the respective jaw plates, separate lug means on each of the outer wedges extending outwardly beyond the periphery of the jaw plates adjacent one end of the chuck a sufficient distance to engage an end surface of a tubular member into which said chuck can be slipped, said inner and outer wedges having inclined surfaces and being oriented so that upon axial movement of said outer wedge in direction toward said one end the effective wedge action is radially outwardly from said mounting member.
Claim 2
Dependent Claim
176 words
An automatic chuck comprising a rotatable mounting member, a plurality of jaw plates extending in direction along the axis of rotation of the mounting member and positioned so that together they substantially surround said mounting member and extend outwardly therefrom to together form an outer chucking surface means, and actuating means for each of said jaw plates, said actuating means comprising wedge means which expand the jaw plates outwardly upon axial movement thereof, said wedge means for each jaw plate comprising separate inner wedges engaging said mounting member and outer wedges engaging the respective jaw plates, separate lug means on each of the outer wedges extending outwardly beyond the periphery of the jaw plates adjacent one end of the chuck a sufficient distance to engage an end surface of a tubular member into which said chuck can be slipped, said inner and outer wedges having inclined surfaces and being oriented so that upon axial movement of said outer wedge in direction toward said one end the effective wedge action is radially outwardly from said mounting member.
Claim 3
Dependent Claim
17 words
The combination as specified in claim 1 wherein the cross-sectional shape of said mounting member is polygonal.
Claim 4
Dependent Claim
18 words
The combination as specified in claim 2 wherein the outer surface means of said jaw plates are serrated.
Claim 5
Dependent Claim
31 words
The combination as specified in claim 1 and a plurality of garter springs extending around the peripheries of said jaw plates and resiliently urging said jaw plates toward said mounting member.
Claim 6
Dependent Claim
32 words
The combination as specified in claim 1 wherein said mounting member has a pair of radially extending disclike end flanges, and said jaw plates and wedge means are between said end flanges.
Claim 7
Dependent Claim
68 words
The combination as specified in claim 1 wherein the lug means on said wedge means are of a size to engage the end surfaces of a core into which the chuck can be slipped, and upon longitudinal movement of said chuck toward said core, said wedge means will be moved and expanded so that the outer surfaces of said jaw plates engage the inner surface of said core.
Claim 8
Dependent Claim
26 words
The combination as specified in claim 1 and bias means acting on said outer wedges tending to move said outer wedges away from said one end.
Claim 9
Dependent Claim
142 words
An automatic chuck for holding tubular members comprising a mounting member having means at one end thereof for rotationally driving it, and a center section of a polygonal cross section, a plurality of jaw plates movably positioned on said center section and extending axially along said mounting member, one of said jaw plates corresponding to each of the surfaces of the center section and extending outwardly therefrom, said jaw plates together forming chucking means, and wedge means for each jaw plate annularly slidably mounted on said mounting member and axially slidably actuable from a retracted position to increase the outer diameter of the chucking means, said wedge means including actuator means extending beyond the jaw plates a sufficient distance to engage the end surface of a tubular member to be held by said chuck, when the wedge means are in retracted position.
Claim 10
Dependent Claim
142 words
An automatic chuck for holding tubular members comprising a mounting member having means at one end thereof for rotationally driving it, and a center section of a polygonal cross section, a plurality of jaw plates movably positioned on said center section and extending axially along said mounting member, one of said jaw plates corresponding to each of the surfaces of the center section and extending outwardly therefrom, said jaw plates together forming chucking means, and wedge means for each jaw plate annularly slidably mounted on said mounting member and axially slidably actuable from a retracted position to increase the outer diameter of the chucking means, said wedge means including actuator means extending beyond the jaw plates a sufficient distance to engage the end surface of a tubular member to be held by said chuck, when the wedge means are in retracted position.
Claim 11
Dependent Claim
173 words
A chuck for holding a tubular member comprising a mounting member adapted to be rotationally driven, said mounting member including a center section having a polygonal cross section, a plurality of jaw plates annularly slidably positioned on and overlying said center section in the polygonal cross section region, said jaw plates together forming chucking means for the tubular member, means for retaining said jaw plates on said center section while permitting annular sliding movement between the jaw plates and the center section, and wedge means for each jaw plate slidably mounted on said mounting member and actuable from a retracted position to move the jaw plates outwardly and increase the effective size of the chucking means to move said jaw plates against the inner surface of a tubular member, said means for retaining said jaw plates on said center section permitting said center section to annularly move relative to the jaw plates during driving of the center section to tend to expand the jaw plates against the inner surface of said tubular member.
Claim 12
Dependent Claim
173 words
A chuck for holding a tubular member comprising a mounting member adapted to be rotationally driven, said mounting member including a center section having a polygonal cross section, a plurality of jaw plates annularly slidably positioned on and overlying said center section in the polygonal cross section region, said jaw plates together forming chucking means for the tubular member, means for retaining said jaw plates on said center section while permitting annular sliding movement between the jaw plates and the center section, and wedge means for each jaw plate slidably mounted on said mounting member and actuable from a retracted position to move the jaw plates outwardly and increase the effective size of the chucking means to move said jaw plates against the inner surface of a tubular member, said means for retaining said jaw plates on said center section permitting said center section to annularly move relative to the jaw plates during driving of the center section to tend to expand the jaw plates against the inner surface of said tubular member.
Claim 13
Dependent Claim
24 words
The combination as specified in claim 9 wherein said means for retaining said jaw plates comprise annular bias means mounted around said jaw plates.
Claim 14
Dependent Claim
37 words
The combination as specified in claim 9 and means defining axially extending grooves in each of said jaw plates, said wedge means for each jaw plate being slidably mounted in the groove of its associated jaw plate.
Claim 15
Dependent Claim
15 words
The combination as specified in claim 9 wherein said polygonal cross section forms a pentagon.
Claim 16
Dependent Claim
96 words
A chuck for engaging the inner surface of a tubular member comprising a mounting member, a plurality of expandable jaw sections mounted on said mounting member, and wedge means for each jaw section, each wedge means comprising a set of inner and outer wedges, said inner and outer wedges having inclined surfaces and being oriented for movement from a retracted to an expanded position to expand said jaw sections outwardly, and separate bias means acting between the inner and outer wedges of each set tending to return said inner and outer wedges to their retracted position.
Claim 17
Dependent Claim
96 words
A chuck for engaging the inner surface of a tubular member comprising a mounting member, a plurality of expandable jaw sections mounted on said mounting member, and wedge means for each jaw section, each wedge means comprising a set of inner and outer wedges, said inner and outer wedges having inclined surfaces and being oriented for movement from a retracted to an expanded position to expand said jaw sections outwardly, and separate bias means acting between the inner and outer wedges of each set tending to return said inner and outer wedges to their retracted position.
Claim 18
Dependent Claim
25 words
The chuck of claim 13 and actuator means for moving the wedges of each set to expanded position against the action of said bias means.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |