US3684152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding wire advancing unit
Assignee: ESAB AB
•
Filing: 1970-04-21
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Granted: 1972-08-15
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Expires: 1990-04-21
Abstract
Abstract A wire advancing unit of the type in which the feed rolls are set at an angle to the wire and revolve about the axis of the wire. The feed roll axles are supported by a pair of rotor members which are angularly displaceable with respect to each other, spring means being provided to urge said rotor members in a direction causing the feed rolls to approach the common axis of rotation of the rotor members.
Inventors
- 👤 Knut Folke Ingemar Boden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:58
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/133; B23K9/1336; C; C08; C08L; C08L89/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
254 words
A welding wire advancing unit comprising a body or housing, a pair of axially spaced rotor members mounted for rotation about a common axis in said body or housing, at least two roll axles and a roll on each of said axles, means for making each of said roll axles span the gap between said rotor members comprising, in each of the rotor members and for each of the roll axles, a roll axle supporting member in the rotor member, said movable joint means being adapted to permit angular displacement of said roll axle supporting member with respect to said rotor member in any plane through the roll axis, said supporting members and their respective joints being uniformly spaced about the axis of each of the rotor members, spring means actuating at least one of said rotor members and tending to cause a relative angular displacement of said rotor members and a corresponding increase of the angle between each of the roll axles and the rotor axis, means including a motor for rotating one of said rotor members, a first wire guiding means adapted to guide the wire towards the rolls, and a second wire guiding means adapted to receive the wire emerging from between the rolls, said first and second wire guiding means substantially coaxial with the rotor axis, at least one of the roll axles being non-slidably retained by both of its supporting members, and at least one of the rotor members being axially slidable in respect of the other rotor member.
Claim 2
Dependent Claim
254 words
A welding wire advancing unit comprising a body or housing, a pair of axially spaced rotor members mounted for rotation about a common axis in said body or housing, at least two roll axles and a roll on each of said axles, means for making each of said roll axles span the gap between said rotor members comprising, in each of the rotor members and for each of the roll axles, a roll axle supporting member in the rotor member, said movable joint means being adapted to permit angular displacement of said roll axle supporting member with respect to said rotor member in any plane through the roll axis, said supporting members and their respective joints being uniformly spaced about the axis of each of the rotor members, spring means actuating at least one of said rotor members and tending to cause a relative angular displacement of said rotor members and a corresponding increase of the angle between each of the roll axles and the rotor axis, means including a motor for rotating one of said rotor members, a first wire guiding means adapted to guide the wire towards the rolls, and a second wire guiding means adapted to receive the wire emerging from between the rolls, said first and second wire guiding means substantially coaxial with the rotor axis, at least one of the roll axles being non-slidably retained by both of its supporting members, and at least one of the rotor members being axially slidable in respect of the other rotor member.
Claim 3
Dependent Claim
29 words
A wire advancing unit as claimed in claim 1 in which the spring means is a compression spring urging the axially slidable rotor member towards the other rotor member.
Claim 4
Dependent Claim
36 words
A wire advancing unit as claimed in claim 1 in which the rotor member driven by the motor is supported by the motor axles, said axle being hollow and constituting one of said wire guiding means.
Claim 5
Dependent Claim
38 words
A wire advancing unit as claimed in claim 1 in which each of the roll axles has a portion extending beyond one of the roll axle supporting members and is fitted with a counterweight supported by said portion.
Claim 6
Dependent Claim
174 words
A wire advancing unit comprising a body or housing, a pair of axially spaced rotor members mounted for rotation about a common axis in said body or housing, at least one of said rotor members being axially slidable in relation to the other rotor member, a compression spring urging said slidable rotor member towards the other rotor member, at least two roll axles and a roll rigidly connected with each of said roll axles, a spherical bearing in each of said rotor members for each of said roll axles, each of said bearings comprising an outer sleeve fitted in the rotor member and an inner sleeve non-slidably engaging the roll axle, said spherical bearings being equally spaced about the axis of the rotor member, means including a motor for rotating one of said rotor members, wire guiding means adapted to guide the wire towards the rolls, and wire guiding means adapted to receive the wire emerging from between the rolls, said first and second wire guiding means being substantially coaxial with the rotor axis.
Claim 7
Dependent Claim
174 words
A wire advancing unit comprising a body or housing, a pair of axially spaced rotor members mounted for rotation about a common axis in said body or housing, at least one of said rotor members being axially slidable in relation to the other rotor member, a compression spring urging said slidable rotor member towards the other rotor member, at least two roll axles and a roll rigidly connected with each of said roll axles, a spherical bearing in each of said rotor members for each of said roll axles, each of said bearings comprising an outer sleeve fitted in the rotor member and an inner sleeve non-slidably engaging the roll axle, said spherical bearings being equally spaced about the axis of the rotor member, means including a motor for rotating one of said rotor members, wire guiding means adapted to guide the wire towards the rolls, and wire guiding means adapted to receive the wire emerging from between the rolls, said first and second wire guiding means being substantially coaxial with the rotor axis.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |