US3591758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-cutting torch
Assignee: Individual
•
Filing: 1969-10-14
•
Granted: 1971-07-06
•
Expires: 1989-10-14
Abstract
Abstract A flame-cutting lance which is flexible and composed of a plurality of multistrand steel wires forming a hollow core within an outer sheath of plastics material, oxygen being supplied to flow through the hollow core and an electric current applied to the steel wires when the lance is in use.
Inventors
- 👤 Reginald Clucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:37
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/14; E21B7/146; B; B23; B23K; B23K35/00; B23K35/02; B23K35/0211; B23K35/0216; E21B7/15
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
48 words
An oxygen flame-cutting lance including a plurality of multistrand steel wires disposed to define a hollow gas-flow passage, an outer sheath of plastics material enclosing said steel wires, means for supplying oxygen to flow through said passage, and means for connecting an electric current to said steel wires.
Claim 2
Dependent Claim
48 words
An oxygen flame-cutting lance including a plurality of multistrand steel wires disposed to define a hollow gas-flow passage, an outer sheath of plastics material enclosing said steel wires, means for supplying oxygen to flow through said passage, and means for connecting an electric current to said steel wires.
Claim 3
Dependent Claim
41 words
An oxygen flame-cutting lance as claimed in claim 1 in which the ends of said steel wires extend into a metallic sleeve adapted for connection to a supply of oxygen and provided with a terminal for connection of an electrical lead.
References Cited (Backward Citations)
US2802930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |