US4072828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotative welding gun
Assignee: Mecazo
•
Filing: 1976-12-10
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Granted: 1978-02-07
•
Expires: 1996-12-10
Abstract
Abstract A small volume rotative welding gun comprises a welding torch which is adjustable both radially and angularly with respect to a movable block, a flat torque motor and a movable block having an accessible front portion carrying the welding torch so as to put same in alignment with a workpiece to be welded. A rear portion of the block passes through the flat motor and is connected to the motor rotor and is provided with axially extending electric wires. The block has a cooling fluid inlet and an inlet for a protective gas flow, both of the inlets being co-axial with said electric wires, and an insulating member. Also provided is a body in which the flat motor is fixed which comprises a device for measuring rotations, liquid metal or carbon electric contacts, bearings for centering the movable block, a protective hood, and gas and current stationary outlets. A ring is further provided for fixing the body to a support member for positioning the gun comprising a device for axially adjusting the gun.
Inventors
- 👤 Paul Thome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:51
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K9/0288
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
111 words
A rotative welding gun comprising: a welding torch adjustably mounted on a movable block and rotatively mounted on a gun body; a flat pancake motor with annular stator and rotor members for rotating said movable block with respect to said gun body; a front portion of said movable block carrying said torch and being directly exposed outside said body so as to face a workpiece to be welded; a rear portion of said movable block passing axially through said annular rotor member of said motor within said body, said rear portion being rigidly connected with said rotor member whereas said stator member of said motor is rigidly connected with said body.
Claim 2
Dependent Claim
111 words
A rotative welding gun comprising: a welding torch adjustably mounted on a movable block and rotatively mounted on a gun body; a flat pancake motor with annular stator and rotor members for rotating said movable block with respect to said gun body; a front portion of said movable block carrying said torch and being directly exposed outside said body so as to face a workpiece to be welded; a rear portion of said movable block passing axially through said annular rotor member of said motor within said body, said rear portion being rigidly connected with said rotor member whereas said stator member of said motor is rigidly connected with said body.
Claim 3
Dependent Claim
173 words
A rotating welding gun comprising: a welding torch adjustable radially and angularly with respect to a movable block; a flat pancake motor for rotating said movable block with respect to a gun body; said movable block having an accessible front portion for carrying said welding torch, said front portion being exposed outside said body to face a workpiece to be welded, a rear portion passing through said flat motor and rigidly connected to a rotor of said motor, said rear portion being provided with axially extending electric wires, a cooling fluid inlet and an inlet for a protective gas flow, both of said inlets being coaxial with said electric wires, and an insulating member; said body being rigidly connected with a stator of said flat motor, and being provided with a device for measuring rotations, liquid metal or carbon electric contacts, and bearings for centering said movable block; said body further comprising a rear protective hood for gas and electric current; stationary outlets connected with said wires and inlets of said rear portion.
Claim 4
Dependent Claim
173 words
A rotating welding gun comprising: a welding torch adjustable radially and angularly with respect to a movable block; a flat pancake motor for rotating said movable block with respect to a gun body; said movable block having an accessible front portion for carrying said welding torch, said front portion being exposed outside said body to face a workpiece to be welded, a rear portion passing through said flat motor and rigidly connected to a rotor of said motor, said rear portion being provided with axially extending electric wires, a cooling fluid inlet and an inlet for a protective gas flow, both of said inlets being coaxial with said electric wires, and an insulating member; said body being rigidly connected with a stator of said flat motor, and being provided with a device for measuring rotations, liquid metal or carbon electric contacts, and bearings for centering said movable block; said body further comprising a rear protective hood for gas and electric current; stationary outlets connected with said wires and inlets of said rear portion.
Claim 5
Dependent Claim
33 words
A gun according to claim 2, further comprising: a ring for fixing it to a support member for positioning said gun, said ring being provided with a device for axially adjusting said gun.
Claim 6
Dependent Claim
123 words
A rotative welding gun, comprising: a welding torch adjustable radially and angularly with respect to a movable block, and rotatively mounted with respect to a gun body; a flat pancake motor with an associated tachometer dynamo; said movable block having an accessible front portion, carrying said welding torch, and exposed outside said body so as to face a workpiece to be welded, and a rear portion passing through said flat motor and rigidly connected to a rotor member of said motor, said front portion being provided with liquid metal rings for conductive connection with stationary electric supply wires; said gun being rigidly connected with a stator member of said motor, and having a device for measuring rotations, centering bearings and a protective hood.
Claim 7
Dependent Claim
123 words
A rotative welding gun, comprising: a welding torch adjustable radially and angularly with respect to a movable block, and rotatively mounted with respect to a gun body; a flat pancake motor with an associated tachometer dynamo; said movable block having an accessible front portion, carrying said welding torch, and exposed outside said body so as to face a workpiece to be welded, and a rear portion passing through said flat motor and rigidly connected to a rotor member of said motor, said front portion being provided with liquid metal rings for conductive connection with stationary electric supply wires; said gun being rigidly connected with a stator member of said motor, and having a device for measuring rotations, centering bearings and a protective hood.
Claim 8
Dependent Claim
34 words
A gun according to claim 4, further comprising a ring for supporting said body onto a support member for positioning said gun, said ring being provided with a device for axially adjusting said gun.
Claim 9
Dependent Claim
44 words
A welding gun according to claim 1, wherein said welding torch comprises a tungsten electrode and a ceramic nozzle supplied with portective gas and is removable, the connection of electric wires, gas conduits, and cooling water ducts being achieved simply by fixing said torch.
Claim 10
Dependent Claim
14 words
A welding gun according to claim 1, wherein said torch is a plasma torch.
Claim 11
Dependent Claim
38 words
A device according to claim 1, comprising means for the measurement of rotations, which means consist of a micro-bulb and a photocell inserted in said gun body, separated by a transparent streaked disk, integral with said movable block.
Claim 12
Dependent Claim
72 words
A welding gun according to claim 1, further comprising a device for centering said welding torch with respect to tubes to be welded, said device comprising a centering base about which said gun can pivot so as to be parallel with the welding plane, while providing access to a removable punch adapted to position said centering base on a tube to be welded, and mechanical means for locking and unlocking said base.
Claim 13
Dependent Claim
26 words
A gun device according to claim 9, wherein said centering base is carried by two crossed rulers and/or comprises a planet carriage for said removable punch.
Claim 14
Dependent Claim
63 words
A welding gun according to claim 1 equipped with a device for supplying a feed metal wire, said gun comprising a series of annular members through which passes a shaft carrying said torch, a gear speed reducer connected to said flat torque motor driving said torch, and a further flat torque motor, stationary and of annular shape, adapted to drive said metal wire.
References Cited (Backward Citations)
US3396263A
Cited
US3621182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |