US3813751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic chuck
Assignee: Individual
•
Filing: 1972-11-22
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Granted: 1974-06-04
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Expires: 1992-11-22
Abstract
Abstract An hydraulic chuck including a cylinder having an opening at the inner end thereof, a cap with a tapered bore mounted on the outer end of the cylinder, a piston having a bore and slidably mounted in the cylinder with a plurality of circumferentially spaced axially and radially movable tube-gripping jaws mounted on the outer end of the piston and engageably with the tapered bore of the cylinder for compression of the jaws upon a tube together with the piston having an annular receiver formed in the outer end for the reception of a tube therein and sealing means carried internally of the piston at said receiver means for engagement with the outer surface of a tube to be expanded.
Inventors
- 👤 G Smida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:49
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/24; B21D; B21D39/00; B21D39/08; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53113; Y10T29/53122; Y10T29/53796; Y10T29/5383
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
118 words
An hydraulic chuck comprising: a. a cylinder having an opening at the inner end thereof, b. the outer end of the cylinder having c. a tapered bore, d. a piston having a bore and slidably mounted in said cylinder, e. a plurality of circumferentially spaced axially and radially movable tube-gripping jaws mounted on the outer end of said piston and engageably with the tapered bore of said cylinder for compression of the jaws upon a tube, f. said piston having receiver means formed in the outer end for the reception of a tube therein, g. sealing means carried internally of the piston at said receiver means for engagement with the outer surface of a tube to be expanDed.
Claim 2
Dependent Claim
118 words
An hydraulic chuck comprising: a. a cylinder having an opening at the inner end thereof, b. the outer end of the cylinder having c. a tapered bore, d. a piston having a bore and slidably mounted in said cylinder, e. a plurality of circumferentially spaced axially and radially movable tube-gripping jaws mounted on the outer end of said piston and engageably with the tapered bore of said cylinder for compression of the jaws upon a tube, f. said piston having receiver means formed in the outer end for the reception of a tube therein, g. sealing means carried internally of the piston at said receiver means for engagement with the outer surface of a tube to be expanDed.
Claim 3
Dependent Claim
17 words
The device of claim 1 in which said receiver means of said piston includes an annular recess.
Claim 4
Dependent Claim
38 words
The device of claim 2 in which a. said sealing means includes an annular recess formed in said piston in which is positioned b. an O-ring for sealing engagement with the surface of a tube to be expanded.
Claim 5
Dependent Claim
30 words
The device of claim 2 in which the outer end of the cylinder is in the form of a cap mounted thereon and in which the tapered bore is formed.
Claim 6
Dependent Claim
26 words
The device of claim 4 in which the bore of the piston is substantially the same as the inside diameter of the tube to be expanded.
Claim 7
Dependent Claim
38 words
The device of claim 1 in which a. said sealing means includes an annular recess formed in said piston in which is positioned b. an O-ring for sealing engagement with the surface of a tube to be expanded.
Claim 8
Dependent Claim
30 words
The device of claim 1 in which the outer end of the cylinder is in the form of a cap mounted thereon and in which the tapered bore is formed.
Claim 9
Dependent Claim
26 words
The device of claim 1 in which the bore of the piston is substantially the same as the inside diameter of the tube to be expanded.
Claim 10
Dependent Claim
38 words
The device of claim 1 in which a. said sealing means includes an annular recess formed in said piston in which is positioned b. an O-ring for sealing engagement with the surface of a tube to be expanded.
References Cited (Backward Citations)
US3585701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |