Patent US3673310A successfully refreshed from Google Patents.
US3673310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical utility box
Assignee: KSM Fastening Systems Inc
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Filing: 1969-12-04
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Granted: 1972-06-27
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Expires: 1989-12-04
Abstract
Abstract A metallic utility box adapted to be secured to metallic walls. A first end weldable stud is welded to the back of the box and a second end weldable stud is welded by the stud welding technique to the metallic wall at the desired location of the box. Mating thread means on the projecting ends of the first and second studs permit the utility box to be secured in place by threading the studs together. Electrical conduit is secured to the box to prevent the box from rotating and consequently becoming unsecured from the wall.
Inventors
- 👤 Robert Louis Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:40
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/10; Y; Y10; Y10S; Y10S248/00; Y10S248/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
In combination, a metallic electrical utility box having a backing member and deep wall portions with at least one conduit aperture through a wall portion, a metallic wall to which the utility box is to be mounted, an internally threaded end weldable stud having one enclosed end and welded substantially perpendicularly at said enclosed end to the backing member of the utility box by the stud end welding technique, an elongate externally threaded end weldable stud of length equal to or greater than the internally threaded stud, welded at one end to the metal wall by the stud end welding technique and extending substantially perpendicularly from the metallic wall, said internally threaded stud being threaded upon the opposite end of the externally threaded stud to support the utility box at any angle and spaced distance from the wall depending upon the length of externally threaded stud chosen and thread engagement, and at least one rigid electrical conduit secured to the utility box through the conduit apertures to secure the utility box against rotation.
Claim 2
Dependent Claim
173 words
In combination, a metallic electrical utility box having a backing member and deep wall portions with at least one conduit aperture through a wall portion, a metallic wall to which the utility box is to be mounted, an internally threaded end weldable stud having one enclosed end and welded substantially perpendicularly at said enclosed end to the backing member of the utility box by the stud end welding technique, an elongate externally threaded end weldable stud of length equal to or greater than the internally threaded stud, welded at one end to the metal wall by the stud end welding technique and extending substantially perpendicularly from the metallic wall, said internally threaded stud being threaded upon the opposite end of the externally threaded stud to support the utility box at any angle and spaced distance from the wall depending upon the length of externally threaded stud chosen and thread engagement, and at least one rigid electrical conduit secured to the utility box through the conduit apertures to secure the utility box against rotation.
References Cited (Backward Citations)
US2461145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |