Patent US3554236A successfully refreshed from Google Patents.
US3554236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stackable wiring duct
Assignee: Individual
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Filing: 1968-11-26
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Granted: 1971-01-12
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Expires: 1988-11-26
Abstract
Abstract A raceway made up of a plurality of raceway units for electrical wiring or the like which may be placed one on top of another to form a multiple raceway assembly. The raceway assembly provides separate raceway conduits for isolating different types of wiring. A joint structure is provided for holding the sections of the raceway firmly together. The joint structure is the form of grooves that receive cylindrical beads. The grooves have radii that are slightly greater than the radii of the cylindrical beads so that the beads snap into the grooves and thereby hold the raceway assembly together. The raceway may be cast from metal, extruded from plastic material or made from any other suitable material. The raceway sections may be easily added to or changed without disturbing the wiring in the other raceways.
Inventors
- 👤 Clifford A Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:52
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/06; A63H33/065; H; H02; H02G; H02G3/00; H02G3/02; H02G3/04; H02G3/0437; H02G3/045; F; F16; F16B; F16B2200/00; F16B2200/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
151 words
A raceway made up of a plurality of sections including base sections and cover sections: said base sections each having a web section and sides defining a channel of rectangular cross section for receiving wires and the like; said sides terminating in a cylindrical bead; said beads being fixed to said sides generally parallel to the said sides; said cover sections each having two spaced grooves in a first side thereof; said grooves having a cross-sectional shape defining a cylindrical surface of approximately the same radius as said beads; said grooves having a depth slightly greater than the radius of said bead; and said cover section being made of a resilient material whereby said bead snaps into said groove and said bead is retained in said groove by the material of said cover extending around said bead beyond a plane passing through the center of said bead parallel to said cover.
Claim 2
Dependent Claim
151 words
A raceway made up of a plurality of sections including base sections and cover sections: said base sections each having a web section and sides defining a channel of rectangular cross section for receiving wires and the like; said sides terminating in a cylindrical bead; said beads being fixed to said sides generally parallel to the said sides; said cover sections each having two spaced grooves in a first side thereof; said grooves having a cross-sectional shape defining a cylindrical surface of approximately the same radius as said beads; said grooves having a depth slightly greater than the radius of said bead; and said cover section being made of a resilient material whereby said bead snaps into said groove and said bead is retained in said groove by the material of said cover extending around said bead beyond a plane passing through the center of said bead parallel to said cover.
Claim 3
Dependent Claim
58 words
The raceway recited in claim 1 wherein said base section has at least two grooves in the outside surface: a second base section similar to said first mentioned base section is supported adjacent said first mentioned base; and said grooves in the outside of said first mentioned base section receiving said beads on said second mentioned base section.
Claim 4
Dependent Claim
25 words
The raceway recited in claim 2 wherein said grooves in the outside of said base sections are formed in the lower side of said web.
Claim 5
Dependent Claim
84 words
The raceway recited in claim 1 wherein said cover has cylindrical beads thereon: a second base section; spaced longitudinal grooves in the outside surface of said second base section; said beads on said cover being received in said grooves in the outside of said second base section, a second cover; said second cover having spaced grooves therein; beads on the upper edges of said second base section; and said beads on said second base section being received in said grooves in said second cover.
Claim 6
Dependent Claim
60 words
In combinatiOn a plurality of first raceway sections and cover sections: said raceway sections being in the form of channels having upwardly extending edges; a cylindrical bead fixed to one said edge and extending along said edge; a groove in said cover adapted to receive said bead; and said groove being slightly deeper than the radius of said cylindrical bead.
Claim 7
Dependent Claim
60 words
In combinatiOn a plurality of first raceway sections and cover sections: said raceway sections being in the form of channels having upwardly extending edges; a cylindrical bead fixed to one said edge and extending along said edge; a groove in said cover adapted to receive said bead; and said groove being slightly deeper than the radius of said cylindrical bead.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |