US4496790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-anchoring poke-thru wiring device
Assignee: Schneider Electric USA Inc
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Filing: 1983-03-18
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Granted: 1985-01-29
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Expires: 2003-03-18
Abstract
Abstract A self-anchoring poke-thru wiring device for the extension of communication and/or electrical wiring through a passage in a floor designed to prevent the spread of fire from one side of the floor to the other and facilitate ready installation and removal of the device from above the floor opening. The device includes a pair of upper conduit portions aligned with a pair of lower conduit portions and a plurality of fire resistant expandable disks retained between an upper and a lower plate intermediate the pairs of conduit portions, the disks and plates including aligned apertures with the conduit portions providing separate wireway channels. The upper conduit portions lead into an outlet box via a floor plate. A pair of generally V-shaped resilient retaining members are removably secured to opposite sides of the upper plate. Each retaining member includes a base leg which is removably secured by a screw to the upper plate and a retaining leg which includes a generally V-shaped notch providing a pair of barbs at the distal end of each leg which extend radially outward past the periphery of the upper and lower plates a sufficient distance to retain the assembly within a floor opening upon insertion. The floor plate of the outlet box includes a plurality of openings aligned with the notches and retaining screws to permit release of the retaining members from above the floor through the floor plate facilitating ready removal of the device from above the floor.
Inventors
- 👤 David E. Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:16
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/22; H02G3/02; H02G3/08; H02G3/18; H02G3/185
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
176 words
A self retaining wiring device for placement in a floor passage comprising: an outlet box including a floor plate; a wiring channel having one end disposed in said floor plate to facilitate extension of wire through said channel and into said outlet box and having an opposite end adapted to be received in a junction box; sealing means for sealing said channel intermediate its opposite ends in response to a fire for preventing the spread of said fire through said floor passage; a second plate surrounding said channel and associated in parallel planar relationship to said floor plate, said second plate having a periphery dimensioned to be received within said floor passage; a plurality of generally V-shaped resilient members removably secured to said second plate, each resilient member having a base leg and a retaining leg; securing means for removably securing said base leg to said second plate; said retaining leg extending peripherally outward past the periphery of said second plate and having portions defining a notch providing a pair of barbs at its distal end.
Claim 2
Dependent Claim
176 words
A self retaining wiring device for placement in a floor passage comprising: an outlet box including a floor plate; a wiring channel having one end disposed in said floor plate to facilitate extension of wire through said channel and into said outlet box and having an opposite end adapted to be received in a junction box; sealing means for sealing said channel intermediate its opposite ends in response to a fire for preventing the spread of said fire through said floor passage; a second plate surrounding said channel and associated in parallel planar relationship to said floor plate, said second plate having a periphery dimensioned to be received within said floor passage; a plurality of generally V-shaped resilient members removably secured to said second plate, each resilient member having a base leg and a retaining leg; securing means for removably securing said base leg to said second plate; said retaining leg extending peripherally outward past the periphery of said second plate and having portions defining a notch providing a pair of barbs at its distal end.
Claim 3
Dependent Claim
23 words
A wiring device as claimed in claim 1 wherein said retaining leg and said base leg form an angle therebetween of approximately 15°.
Claim 4
Dependent Claim
19 words
A wiring device as claimed in claim 1 wherein said retaining member is formed of 0.03 inch spring steel.
Claim 5
Dependent Claim
47 words
A wiring device as claimed in claim 1 wherein said securing means comprises a threaded aperture in said second plate, an aperture in said base leg and a screw extending through said aperture in said base leg and threadingly received by said aperture of said second plate.
Claim 6
Dependent Claim
29 words
A wiring device as claimed in claim 4 wherein said notch is provided directly above said screw whereby access is provided to said screw from above said floor opening.
Claim 7
Dependent Claim
35 words
A wiring device as claimed in claim 5 wherein said floor plate includes an aperture in registration with said notch and screw head facilitating removal of said screw while said floor plate remains in place.
Claim 8
Dependent Claim
182 words
A self retaining wiring device for placement in a floor passage comprising: an outlet box including a floor plate; a first conduit portion having one end received in said floor plate; a first sandwich plate having an aperture receiving said opposite end of said first conduit portion said first plate dimensioned to be received within said floor passage; a second sandwich plate connected to said first sandwich plate and dimensioned to be received within said floor passage; a fire retardent disk material intermediate said first and second sandwich plates having an aperture aligned with said first conduit portion; a second conduit portion received in said second sandwich plate aligned in registration with said first conduit portion and having an opposite end adapted to be connected to a junction box; a plurality of generally V-shaped resilient members removably secured to said first sandwich plate, each resilient member having a base leg and a retaining leg; said retaining leg extending peripherally outward past the periphery of said second plate and having portions defining a notch providing a pair of barbs at its distal end.
Claim 9
Dependent Claim
182 words
A self retaining wiring device for placement in a floor passage comprising: an outlet box including a floor plate; a first conduit portion having one end received in said floor plate; a first sandwich plate having an aperture receiving said opposite end of said first conduit portion said first plate dimensioned to be received within said floor passage; a second sandwich plate connected to said first sandwich plate and dimensioned to be received within said floor passage; a fire retardent disk material intermediate said first and second sandwich plates having an aperture aligned with said first conduit portion; a second conduit portion received in said second sandwich plate aligned in registration with said first conduit portion and having an opposite end adapted to be connected to a junction box; a plurality of generally V-shaped resilient members removably secured to said first sandwich plate, each resilient member having a base leg and a retaining leg; said retaining leg extending peripherally outward past the periphery of said second plate and having portions defining a notch providing a pair of barbs at its distal end.
Claim 10
Dependent Claim
47 words
A wiring device as claimed in claim 7 wherein said first sandwich plate includes a plurality of threaded apertures, each base leg includes an aperture, and a screw extending through said aperture in each base leg threadingly received by a respective aperture of said first sandwich plate.
Claim 11
Dependent Claim
37 words
A wiring device as claimed in claim 8 wherein said floor plate includes a plurality of apertures respectively in registration with said notch and said screw to facilitate removal of said screw without removing said outlet box.
Claim 12
Dependent Claim
36 words
A wiring device as claimed in claim 8 including a plurality of sleeve members intermediate said first sandwich plate and said second sandwich plate and a screw extending through each said sleeve member connecting said plates.
Claim 13
Dependent Claim
33 words
A wiring device as claimed in claim 10 wherein said retaining member is formed of 0.03 inch spring steel and said retaining leg and base leg form an angle therebetween of approximately 15°.
Claim 14
Dependent Claim
33 words
A wiring device as claimed in claim 11 wherein each barb has an outer corner formed at approximately a 90° angle and an inner corner having an obtuse angle defined by said notch.
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) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |