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US3725568A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrical ceiling raceway

Assignee: DUO FLEX CORP
•
Filing: 1971-12-06
•
Granted: 1973-04-03
•
Expires: 1991-12-06
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Abstract

Abstract An electrical raceway comprising a housing which, in section, is enclosed on all sides except an opening which extends along the entire length of the housing. The opening may be closed by a removable cover plate after suitable wiring has been laid into the raceway within the housing. The housing may be of any suitable shape and, in fact, may form two separated raceways, each of which is enclosed by a removable cover. Suitable means are provided, replacing predetermined portions of the covers, for mechanically connecting electrical or telephone conduit thereto so that a suitable connection can be made between the cable within the raceway and that in the conduit. Structure, formed integral with the housing, is provided for suspension of the housing from a building ceiling in such a way that the suspension system does not interfere with access to the raceway through the cover plates. Structure for supporting a false ceiling is also formed integral with the housing and extends therefrom for holding false ceiling panels below the housing in a well-known manner.

Inventors

  • 👤 J Stanley

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 04:09
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/28; H02G3/281

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 169 words
A ceiling panel support and raceway member for suspension from an overhead ceiling by means of a plurality of elements extending downwardly from the overhead ceiling, said member comprising: a. a rigid elongated, narrow upper transverse support member, said member having means to be secured to the lower extremities of said downwardly extending elements; b. an elongated housing attached along the lower portion of said transverse support member to be supported thereby, said housing having bottom and side walls defining at least one raceway to receive and support electrical wiring, said housing further including a removable cover plate, upon removal of which access may be had to the inside of said housing in order to lay, remove or splice such wiring; and c. laterally flanged ceiling panel support means carried by the bottom wall of said housing, whereby said ceiling panel support and raceway member may serve as a primary support member in a suspended ceiling system, while simultaneously being adapted as a raceway accessably to carry electrical wiring.
Claim 2
Dependent Claim 169 words
A ceiling panel support and raceway member for suspension from an overhead ceiling by means of a plurality of elements extending downwardly from the overhead ceiling, said member comprising: a. a rigid elongated, narrow upper transverse support member, said member having means to be secured to the lower extremities of said downwardly extending elements; b. an elongated housing attached along the lower portion of said transverse support member to be supported thereby, said housing having bottom and side walls defining at least one raceway to receive and support electrical wiring, said housing further including a removable cover plate, upon removal of which access may be had to the inside of said housing in order to lay, remove or splice such wiring; and c. laterally flanged ceiling panel support means carried by the bottom wall of said housing, whereby said ceiling panel support and raceway member may serve as a primary support member in a suspended ceiling system, while simultaneously being adapted as a raceway accessably to carry electrical wiring.
Claim 3
Dependent Claim 35 words
The ceiling panel support and raceway member as defined in claim 1, wherein said elongated transverse support member is integrally formed with one of said side walls of said housing which partially defines a raceway.
Claim 4
Dependent Claim 44 words
The ceiling panel support and raceway member as defined in claim 1, wherein the removable cover plate is formed of a plurality of separate segments, at least one of which is orificed and fitted to receive and grip an end of a B-X cable.
Claim 5
Dependent Claim 35 words
The ceiling panel support and raceway member as defined in claim 1, wherein the removable cover plate is orificed and includes as a fitting to be secured about the orifice an electrical cable junction box.

References Cited (Backward Citations)

US2888113A Cited
US2956150A Cited
US3001001A Cited
US3146956A Cited
US3275817A Cited
US3504172A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-04-02 1976-10-02 1977-04-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-02 1980-10-02 1981-04-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-02 1984-10-02 1985-04-03 $7700.00 Window Closed / Lapsed

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