Patent US3696481A successfully refreshed from Google Patents.
US3696481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for performing operations on hydraulic tubing
Assignee: Individual
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Filing: 1970-11-16
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Granted: 1972-10-10
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Expires: 1990-11-16
Abstract
Abstract Apparatus for performing a number of operations on hydraulic tubing in the construction of hydraulic installations is mobile and includes a mechanical bending device, a mechanical cut-off device for cutting the tubing to length, a de-burring device for removing the burrs from the ends of the tubing after it has been cut and a device for securing coupling parts to the ends of the cut-off lengths of tubing. All of these devices are driven by hydraulic drives, consisting of rams or motors and all of the drives are supplied with hydraulic fluid under pressure from a common pump through a number of separate control valves.
Inventors
- 👤 Paul Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:18
CPC Classifications
B; B21; B21D; B21D9/00; B21D9/05; B21D9/07; B21D9/073; B23; B23D; B23D79/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T29/51; Y10T29/5136; Y10T29/5137; Y10T29/5143; Y10T29/5145; Y10T29/5199; Y10T29/53; Y10T29/5367
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
87 words
Apparatus for performing operations on hydraulic tubing, said apparatus including a frame, means for mobilizing said frame, said frame having mounted thereon tube bending means, tube cutoff means for cutting off lengths of said tubing, means for deburring the ends of said cut-off lengths of tubing, and means for securing coupling parts to said ends, mechanical drive means mounted on said frame and means operatively connecting said mechanical drive means to said bending means, said cut-off means, said de-burring means and said means for securing coupling parts.
Claim 2
Dependent Claim
87 words
Apparatus for performing operations on hydraulic tubing, said apparatus including a frame, means for mobilizing said frame, said frame having mounted thereon tube bending means, tube cutoff means for cutting off lengths of said tubing, means for deburring the ends of said cut-off lengths of tubing, and means for securing coupling parts to said ends, mechanical drive means mounted on said frame and means operatively connecting said mechanical drive means to said bending means, said cut-off means, said de-burring means and said means for securing coupling parts.
Claim 3
Dependent Claim
38 words
Apparatus as claimed in claim 1, wherein said mechanical drive means includes a plurality of separate hydraulic drive means and means operatively connecting said hydraulic drive means to said bending means, said cut-off means and said de-burring means.
Claim 4
Dependent Claim
32 words
Apparatus as claimed in claim 2, wherein said mechanical drive means further includes a single hydraulic pump and means operatively connecting said pump to each of said plurality of hydraulic drive means.
Claim 5
Dependent Claim
65 words
Apparatus as claimed in claim 1, wherein said bending means includes a tube bending mandrel, means defining a peripheral groove in said mandrel, means rotatably mounting said mandrel, a first thrust guide, means stationarily mounting said first thrust guide, a second thrust guide, means pivotally mounting said second thrust guide and means for swinging said second thrust guide about the axis of said rotatable mandrel.
Claim 6
Dependent Claim
39 words
Apparatus as claimed in claim 4, wherein said bending means further includes a calibrating mandrel and means mounting said calibrating mandrel for insertion in said tubing when said tubing is held between said bending mandrel and said thrust guides.
Claim 7
Dependent Claim
21 words
Apparatus as claimed in claim 5, further comprising means for retracting said calibrating mandrel to withdraw said mandrel from said tubing.
Claim 8
Dependent Claim
25 words
Apparatus as claimed in claim 6, where said retracting means includes hydraulic ram means and means operatively connecting said ram means to said calibrating mandrel.
Claim 9
Dependent Claim
46 words
Apparatus as claimed in claim 7, wherein said hYdraulic ram means is single-acting and includes a cylinder, a piston and compression spring means within said cylinder acting on said piston to move said piston in a direction opposite to that in which said ram is single-acting.
Claim 10
Dependent Claim
110 words
Apparatus as claimed in claim 1, wherein said cut-off means includes circular saw means, first mounting means for mounting said circular saw means for rotation about an axis, second mounting means mounting said first mounting means for advancing and retracting movement lateral to said axis to advance said saw to cut said tubing, a hydraulic motor, means operatively connecting said hydraulic motor to said saw to rotate said saw, a hydraulic ram, means operatively connecting said hydraulic ram to said second mounting means, means hydraulically connecting said hydraulic motor in series with said ram and hydraulic pump means for supplying hydraulic fluid to said motor and thence to said ram.
Claim 11
Dependent Claim
20 words
Apparatus as claimed in claim 9, wherein said hydraulic motor includes throttling means to limit the speed of rotation thereof.
Claim 12
Dependent Claim
17 words
Apparatus as claimed in claim 9, wherein said hydraulic ram is single-acting and includes return spring means.
Claim 13
Dependent Claim
84 words
Apparatus as claimed in claim 9, further comprising clamping means for holding said tubing while said tubing is cut by said saw, said clamping means including first and second clamp jaws, means fixedly mounting said first jaw, means movably mounting said second jaw for movement towards and away from said first jaw, spring means for moving said second jaw towards said first jaw and hydraulic ram means for moving said second jaw away from said first jaw against the action of said spring means.
Claim 14
Dependent Claim
41 words
Apparatus as claimed in claim 1, wherein said de-burring means includes a countersink milling cutter for de-burring said cut-off tube end internally, a female conical milling cutter for de-burring said cut-off tube end externally and means for rotating said milling cutters.
Claim 15
Dependent Claim
75 words
Apparatus as claimed in claim 13, wherein said means for rotating said milling cutters includes a first hydraulic motor, a second hydraulic motor, means operatively connecting said first hydraulic motor to said countersink milling cutter, means operatively connecting said second hydraulic motor to said female conical milling cutter, means hydraulically connecting said first and second hydraulic motors in series with each other and means for supplying hydraulic fluid under pressure to one of said motors.
Claim 16
Dependent Claim
31 words
Apparatus as claimed in claim 1, wherein said means for securing coupling parts to said tubing includes a press tool and a die plate for securing an olive to said tubing.
Claim 17
Dependent Claim
44 words
Apparatus as claimed in claim 15, wherein said press tool includes a hydraulic ram, a piston rod extending from said ram, a press tool bit, and means detatchably mounting said press tool bit on said piston rod whereby said press tool bit is exchangeable.
Claim 18
Dependent Claim
31 words
Apparatus as claimed in claim 16, wherein said die plate includes an insert support and means detatchably mounting said insert support on said die plate whereby said insert support is exchangeable.
Claim 19
Dependent Claim
26 words
Apparatus as claimed in claim 17, wherein said hydraulic ram having said piston on which said pressure tool is mounted includes adjustable pressure relief valve means.
Claim 20
Dependent Claim
110 words
Apparatus as claimed in claim 18, wherein said adjustable pressure relief valve means includes a valve seat, a valve closure member, spring means biasing said closure member towards said seat and means for adjusting the force exerted by said spring means, said adjusting means including a push rod, means mounting said push rod in engagement with said spring means and for sliding movement in and out of said valve and means engaging said push rod with said insert support whereby the position of said push rod is dependent upon the width of said insert support and the position of said push rod adjusts the force exerted by said spring means.
Claim 21
Dependent Claim
29 words
Apparatus as claimed in claim 19, further comprising a roller and means rotatably mounting said roller on one end of said push rod, said roller engaging said insert support.
Claim 22
Dependent Claim
24 words
Apparatus as claimed in claim 20, wherein said insert support includes means defining a sloping edge, said sloping edge being contacted by said roller.
References Cited (Backward Citations)
US3183702A
Cited
US3156284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |