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US3681542A Expired / Lapsed US ⏱️ 0.0 years remaining

Trolley mounted electrical outlet

Assignee: Individual
•
Filing: 1970-08-07
•
Granted: 1972-08-01
•
Expires: 1990-08-07
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Abstract

Abstract An elongated support rail including a pair of opposite side longitudinal track portions facing upwardly and a third downwardly facing longitudinal track portion. A suspended trolley is supported from the rail and provided with opposite side wheels rollingly engaged with the side track portions and central wheels rollingly engaged with the third track portion. The central wheels are spaced longitudinally of the rail and are supported from the trolley for vertical adjustment relative to the side wheels and the side wheels comprise electrical contact rollers which are insulatively supported from the trolley and are operative to conduct electrical current from the opposite side track portions, the latter being constructed of conductive material and insulatively supported relative to each other for connection with a suitable source of electrical potential.

Inventors

  • 👤 Ernest E Johnson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 13:22
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/04

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 138 words
An elongated support rail structure including a pair of opposite side longitudinal track surfaces facing upwardly and a central downwardly facing longitudinal track surface, a suspension trolley suspended beneath said rail structure and including opposite side wheels rollingly engaged with said side longitudinal track surfaces, said trolley further including longitudinally spaced central wheels rollingly engaged with longitudinally spaced portions of said downwardly facing track surface, said central wheels being supported from said trolley for vertical adjustment relative to said opposite side wheels, said trolley including a lower body portion, said central wheels being journaled from the upper ends of the legs of a V-shaped support structure whose apex is anchored to said body portion, said V-shaped support structure being constructed of resilient material, and an adjustable length tension member connected between the upper end portions of said legs.
Claim 2
Dependent Claim 138 words
An elongated support rail structure including a pair of opposite side longitudinal track surfaces facing upwardly and a central downwardly facing longitudinal track surface, a suspension trolley suspended beneath said rail structure and including opposite side wheels rollingly engaged with said side longitudinal track surfaces, said trolley further including longitudinally spaced central wheels rollingly engaged with longitudinally spaced portions of said downwardly facing track surface, said central wheels being supported from said trolley for vertical adjustment relative to said opposite side wheels, said trolley including a lower body portion, said central wheels being journaled from the upper ends of the legs of a V-shaped support structure whose apex is anchored to said body portion, said V-shaped support structure being constructed of resilient material, and an adjustable length tension member connected between the upper end portions of said legs.
Claim 3
Dependent Claim 56 words
The combination of claim 1 including an electrical outlet fixture supported from said body portion, said opposite side track surfaces and said opposite wheels being constructed of conductive material, insulated means electrically connecting said opposite side wheels to said outlet fixture, said opposite side track surfaces being adapted for connection with a source of electrical potential.
Claim 4
Dependent Claim 38 words
The combination of claim 1 wherein said trolley includes an electrical outlet fixture, said side track surfaces and said side wheels being constructed of conductive material, and means electrically connecting said side wheels to said electrical outlet fixture.
Claim 5
Dependent Claim 180 words
An elongated support rail surface including a pair of opposite side longitudinal first track surfaces facing upwardly and central downwardly facing second track surfaces, a trolley including a first set of opposite side followers guidingly engaged with said first track surfaces and a second set of central followers engaged with longitudinally spaced portions of said second surfaces for movement therealong, one set of said followers being supported from said trolley for vertical adjustment relative to the other set of followers, the weight of said trolley being supported from said track surfaces through said first set of followers, said first set of followers and said first track surfaces being constructed of conductive material, said trolley including an electrical outlet fixture electrically connected to said first set of followers, a lower body portion, said central followers being journaled from the upper ends of the legs of a V-shaped support structure whose apex is anchored to said body portion, said V-shaped Support structure being constructed of resilient material, and an adjustable length tension member connected between the upper end portions of said legs.
Claim 6
Dependent Claim 180 words
An elongated support rail surface including a pair of opposite side longitudinal first track surfaces facing upwardly and central downwardly facing second track surfaces, a trolley including a first set of opposite side followers guidingly engaged with said first track surfaces and a second set of central followers engaged with longitudinally spaced portions of said second surfaces for movement therealong, one set of said followers being supported from said trolley for vertical adjustment relative to the other set of followers, the weight of said trolley being supported from said track surfaces through said first set of followers, said first set of followers and said first track surfaces being constructed of conductive material, said trolley including an electrical outlet fixture electrically connected to said first set of followers, a lower body portion, said central followers being journaled from the upper ends of the legs of a V-shaped support structure whose apex is anchored to said body portion, said V-shaped Support structure being constructed of resilient material, and an adjustable length tension member connected between the upper end portions of said legs.
Claim 7
Dependent Claim 109 words
In combination, an elongated support rail structure including upwardly and downwardly facing track surfaces, a trolley suspended beneath said structure, including first follower means guidingly engaged with said upwardly facing surfaces and a second pair of follower means guidingly engaged with said downwardly facing surfaces at points spaced along said structure on both sides of a vertical transverse plane containing said first follower means, said pair of follower means being supported from said trolley for shifting relative to said first follower means along upwardly convergent paths disposed in an upstanding plane containing said rail structure, and means for adjustably positioning said pair of follower means upwardly along said paths.
Claim 8
Dependent Claim 109 words
In combination, an elongated support rail structure including upwardly and downwardly facing track surfaces, a trolley suspended beneath said structure, including first follower means guidingly engaged with said upwardly facing surfaces and a second pair of follower means guidingly engaged with said downwardly facing surfaces at points spaced along said structure on both sides of a vertical transverse plane containing said first follower means, said pair of follower means being supported from said trolley for shifting relative to said first follower means along upwardly convergent paths disposed in an upstanding plane containing said rail structure, and means for adjustably positioning said pair of follower means upwardly along said paths.

References Cited (Backward Citations)

US640050A Cited
US987253A Cited
US2562979A Cited
US2968782A Cited
US3361084A Cited
US3518947A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-08-01 1976-01-31 1976-08-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-01 1980-01-31 1980-08-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-01 1984-01-31 1984-08-01 $7700.00 Window Closed / Lapsed

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