US3660631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual pressure welding machine
Assignee: Accra Point Arrys Corp
•
Filing: 1970-06-16
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Granted: 1972-05-02
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Expires: 1990-06-16
Abstract
Abstract A dual pressure welding machine employing a magnetic connection to secure a first and higher pressure to cold flow or mechanically separate the insulation from a wire to be welded from the interfaces between an electrode, the wire and a terminal to which the wire is to be welded. When the magnetic connection is broken a second and lower welding pressure is applied from the electrode to the wire and terminal by means of a spring which may be a constant-force spring applying the same pressure regardless of its extended length or which may be an extension spring whose pressure increases with its extended length so that the welding pressure may be adjusted. The machine includes a pair of carriages connected together by the magnetic connection and the spring, with one carriage carrying the electrodes and the other moveable by either a pneumatic or manual operator.
Inventors
- 👤 Larry R Conley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:27
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/163
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
163 words
A dual pressure welding machine comprising: first and second electrodes; a pair of moveable carriages; said first electrode mounted on said first carriage for movement therewith; means for moving the other of said carriages; means for making a magnetic connection between said carriages to connect the carriages for movement together as a unit; a spring interconnecting said carriages for action relative thereto after the magnetic connection is broken; movement of said other carriage intially moving said carriages together as a unit until said first electrode engages a pair of elements to be welded together, with the pressure between said electrode and said elements thereby building up to a value at which said magnetic connection is broken; the force thereafter on said first carriage and first electrode being determined by the spring connection between the carriages independently of the now open magnetic connection; and means for energizing said electrodes to make the weld under the pressure exerted by the spring connection between said carriages.
Claim 2
Dependent Claim
163 words
A dual pressure welding machine comprising: first and second electrodes; a pair of moveable carriages; said first electrode mounted on said first carriage for movement therewith; means for moving the other of said carriages; means for making a magnetic connection between said carriages to connect the carriages for movement together as a unit; a spring interconnecting said carriages for action relative thereto after the magnetic connection is broken; movement of said other carriage intially moving said carriages together as a unit until said first electrode engages a pair of elements to be welded together, with the pressure between said electrode and said elements thereby building up to a value at which said magnetic connection is broken; the force thereafter on said first carriage and first electrode being determined by the spring connection between the carriages independently of the now open magnetic connection; and means for energizing said electrodes to make the weld under the pressure exerted by the spring connection between said carriages.
Claim 3
Dependent Claim
106 words
The welding machine defined in claim 1, including: a passage through one of said first and second electrodes; an insulated wire fed through said passage to loop past the welding face of said one electrode; and a terminal element to which said wire is to be welded, the initial pressure applied by said magnetic connection being sufficient to mechanically separate the insulation at the interfaces between the wire, the one electrode surface and the terminal element to secure metal to metal contact thereat , and said spring connection between said carriages applying a lower pressure desired between the wire and terminal element for the welding operation.
Claim 4
Dependent Claim
40 words
The welding machine defined in claim 1 in which said spring applies a constant-force regardless of its extension so that terminals of various lengths may be welded in the machine with constant welding pressure without change in the machine mechanism.
Claim 5
Dependent Claim
58 words
The welding machine defined in claim 1 in which said spring connecting the carriages is an extension spring with a constant so that the force exerted thereby depends upon its extended length; and means for adjustably limiting the position of said other carriage so as to limit the extension of the spring and the welding pressure developed thereby.
Claim 6
Dependent Claim
33 words
The welding machine defined in claim 4 including: means adjustable to determine the point in the travel of said other carriage at which the electrodes are energized to pass current through the weld.
Claim 7
Dependent Claim
38 words
The welding machine defined in claim 1 including: a pneumatic operator connected to said other carriage for effecting movement thereof in one direction; and a return spring for effecting movement of said other carriage in the opposite direction.
Claim 8
Dependent Claim
44 words
The welding machine defined in claim 1 including: a foot pedal; a flexible cable interconnecting said foot pedal and said other carriage for affecting movement thereof in one direction; and a return spring for affecting movement of said other carriage in the opposite direction.
Claim 9
Dependent Claim
43 words
The welding machine defined in claim 1 including: a base; means mounting a pair of shafts on said base in parallel, spaced relation; and bushings on said carriages receiving said shafts for slidably mounting said carriages thereon for movement parallel the axes thereof.
Claim 10
Dependent Claim
26 words
The welding machine defined in claim 8 in which said bushings are of the longitudinally recirculating, ball-type for minimizing frictional resistance to movement of the carriages.
Claim 11
Dependent Claim
29 words
The welding machine defined in claim 1 including: dashpot means connected to said carriages for damping mechanical transients which may occur when the magnetic connection is broken and made.
Claim 12
Dependent Claim
30 words
The welding machine defined in claim 10 in which there is one dashpot means interconnecting said carriages and the second dashpot means interconnecting said other carriage and a fixed part.
Claim 13
Dependent Claim
51 words
The welding machine defined in claim 1 including: a fixedly mounted control switch for the power supply to the said electrodes; and an operator for said switch engaged by said other carriage to operate the switch just prior to the limit of travel of said other carriage in the welding direction.
Claim 14
Dependent Claim
105 words
A dual pressure welding machine comprising: stationary and moveable electrodes adapted to effect a welding operation therebetween; a moveable member; means for making a magnetic connection between said moveable member and said moveable electrode whereby said moveable member and moveable electrode are connected together to initially move together as a unit to apply a first relatively higher pressure between said electrodes, said magnetic connection breaking at a pre-determined pressure value; and spring means interconnecting said moveable member and moveable electrode to exert a second relatively lower pressure between said electrodes after said magnetic connection is broken to apply a welding pressure for the welding operation.
Claim 15
Dependent Claim
105 words
A dual pressure welding machine comprising: stationary and moveable electrodes adapted to effect a welding operation therebetween; a moveable member; means for making a magnetic connection between said moveable member and said moveable electrode whereby said moveable member and moveable electrode are connected together to initially move together as a unit to apply a first relatively higher pressure between said electrodes, said magnetic connection breaking at a pre-determined pressure value; and spring means interconnecting said moveable member and moveable electrode to exert a second relatively lower pressure between said electrodes after said magnetic connection is broken to apply a welding pressure for the welding operation.
Claim 16
Dependent Claim
38 words
The welding machine defined in claim 13 in which said spring means applies a constant-force regardless of its extension whereby the welding pressure remains constant regardless of the amount of separation between said moveable member and moveable electrode.
Claim 17
Dependent Claim
66 words
The welding machine defined in claim 13 including: means to feed an insulated wire between said electrodes which is to be welded in conducting relation to a terminal part; said first pressure exerted through said magnetic connection being sufficient to mechanically separate the insulation from said wire at its interfaces with one of said electrodes and the terminal part to which it is to be welded.
Claim 18
Dependent Claim
47 words
The welding machine defined in claim 1, including: means for supporting an insulated wire for welding thereof, said supporting means including a passage through one of said first and second electrodes through which said wire is fed to loop past the welding face of said one electrode.
Claim 19
Dependent Claim
16 words
The welding machine defined in claim 16 in which said one electrode is said first electrode.
Claim 20
Dependent Claim
38 words
The welding machine defined in claim 1 in which said second electrode is a stationary electrode positioned in line with said first electrode; and means for supporting said elements between said first and second electrodes for welding therebetween.
Claim 21
Dependent Claim
19 words
The welding machine defined in claim 18 in which said supporting means for said elements includes said second electrode.
Claim 22
Dependent Claim
109 words
The welding machine defined in claim 18, including: a passage through one of said first and second electrodes; an insulated wire fed through said passage to loop past the welding face of said one electrode; and a terminal element to which said wire is to be welded disposed between said electrodes, the initial pressure applied by said magnetic connection being sufficient to mechanically separate the insulation at the interfaces between the wire, the one electrode surface and the terminal element to secure metal to metal contact thereat, and said spring connection between said carriages applying a lower pressure desired between the wire and terminal element for the welding operation.
Claim 23
Dependent Claim
143 words
A dual pressure welding machine comprising: means for supporting a workpiece to be welded; means for positioning a conductor adjacent said workpiece for welding thereto; first and second electrodes adapted to respectively contact said conductor and said workpiece to effect a welding operation therebetween; a moveable member; means for making a magnetic connection between said moveable member and said first electrode whereby they are connected together and initially move together to apply a first relatively higher pressure between said first electrode and said conductor, said magnetic connection breaking at a predetermined value; spring means interconnecting said moveable member and said first electrode to exert a second and relatively lower pressure between said first electrode and said conductor after said magnetic connection is broken; and means for applying a welding current to said electrodes to effect said welding operation at said relatively lower pressure.
Claim 24
Dependent Claim
143 words
A dual pressure welding machine comprising: means for supporting a workpiece to be welded; means for positioning a conductor adjacent said workpiece for welding thereto; first and second electrodes adapted to respectively contact said conductor and said workpiece to effect a welding operation therebetween; a moveable member; means for making a magnetic connection between said moveable member and said first electrode whereby they are connected together and initially move together to apply a first relatively higher pressure between said first electrode and said conductor, said magnetic connection breaking at a predetermined value; spring means interconnecting said moveable member and said first electrode to exert a second and relatively lower pressure between said first electrode and said conductor after said magnetic connection is broken; and means for applying a welding current to said electrodes to effect said welding operation at said relatively lower pressure.
Claim 25
Dependent Claim
39 words
The welding machine defined in claim 21 in which said spring means applies a constant-force regardless of its extension whereby the welding pressure remains constant regardless of the amount of separation between said moveable member and said first electrode.
Claim 26
Dependent Claim
53 words
The welding machine defined in claim 21 in which: said conductor is an insulated conductor; and said first relatively higher pressure exerted through said magnetic connection being sufficient to mechanically separate the insulation from said conductor at its interfaces with said first electrode and said workpiece to which it is to be welded.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |