US3702913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding head supporting apparatus
Assignee: Astro ARC Co
•
Filing: 1971-04-21
•
Granted: 1972-11-14
•
Expires: 1991-04-21
Abstract
Abstract An apparatus to support a welding apparatus which is to effect welding of cylindrical tubes wherein the welding apparatus is moved around the tubes by means of a roller being driven about a flexible band, the flexible band being held taut between a guide roller housing and a drive roller housing.
Inventors
- 👤 Gasparas Kazluaskas
- 👤 Mindaugas E Gedgaudas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:43
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K9/0282; B23K9/0286
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
A welding head supporting apparatus to produce a weld upon a circumferential workpiece comprising: track means to guide said supporting apparatus in a prescribed path, said track means being substantially circular in configuration, said track means being formed of a first section and a second section, each of said first and second sections being hinged together at one end and securable together at the other ends by a fastening means; guide roller means connected to said track means adapted to move therealong to guide said supporting apparatus in said prescribed path, said guide roller means comprises a plurality of separate guide roller units, at least two in number of said guide roller units being located exteriorly and on opposing lateral sides of said track means; and retention means to retain said guide roller means in connection with said track means, said retention means includes a flexible belt surrounding said first element and in frictional contact with said track means, said flexible belt being connected to said guide roller means.
Claim 2
Dependent Claim
169 words
A welding head supporting apparatus to produce a weld upon a circumferential workpiece comprising: track means to guide said supporting apparatus in a prescribed path, said track means being substantially circular in configuration, said track means being formed of a first section and a second section, each of said first and second sections being hinged together at one end and securable together at the other ends by a fastening means; guide roller means connected to said track means adapted to move therealong to guide said supporting apparatus in said prescribed path, said guide roller means comprises a plurality of separate guide roller units, at least two in number of said guide roller units being located exteriorly and on opposing lateral sides of said track means; and retention means to retain said guide roller means in connection with said track means, said retention means includes a flexible belt surrounding said first element and in frictional contact with said track means, said flexible belt being connected to said guide roller means.
Claim 3
Dependent Claim
23 words
The combination of claim 1 wherein: an annular recess formed within said track means, said flexible belt to cooperate within said annular recess.
Claim 4
Dependent Claim
70 words
The combination of claim 1 wherein: there being four in number of said guide roller units within said guide roller means, two of said guide roller units being rotatably mounted upon a first axle and two of said guide roller units being rotatably mounted upon a second axle, said first axle being spaced from said second axle, both said first and second axles being fixed within a guide roller housing.
Claim 5
Dependent Claim
34 words
The combination of claim 3 wherein: said first axle and said second axle rotatably support a friction roller located intermediate said roller units, said friction roller to be in contact with said flexible band.
Claim 6
Dependent Claim
45 words
The combination of claim 1 including: a drive roller housing being connected to said guide roller means and mOvable with respect thereto, said drive roller housing being under a constant bias to tend to move such to the maximum distance from said guide roller means.
Claim 7
Dependent Claim
15 words
The combination of claim 5 wherein: said bias being supplied by means of a spring.
Claim 8
Dependent Claim
33 words
The combination of claim 5 wherein: said drive roller housing including a drive roller, said drive roller being rotatable by means of a motor, said band being in contact with said drive roller.
Claim 9
Dependent Claim
28 words
The combination of claim 5 wherein: said drive roller housing including a plurality of drive rollers, said flexible band being in contact with each of said drive rollers.
Claim 10
Dependent Claim
20 words
The combination as defined in claim 8 wherein: each of said drive rollers being connected together through a gearing arrangement.
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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |