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Publication numberUS3756447 A
Publication typeGrant
Publication dateSep 4, 1973
Filing dateFeb 7, 1972
Priority dateFeb 7, 1972
Also published asCA968881A1
Publication numberUS 3756447 A, US 3756447A, US-A-3756447, US3756447 A, US3756447A
InventorsHadfield R
Original AssigneeTextron Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Floor fitting
US 3756447 A
Abstract
A floor fitting including a housing made of clear polycarbonate plastic and having a painted interior surface, the clear plastic providing a colored appearance for the fitting and also protecting the colored surface from damage as by scuffing, etc.
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Description  (OCR text may contain errors)

United States Patent 1191 1111 3,756,447

Hadfield 1451 Sept. 4, 1973 I 1 FLOOR FITTING 2,867,349 1/1959 Parke, Jr 2 0/33 3,047,650 7/l962 Reiland 220/33 X [751 memo" Hume, 3,651,245 3 1972 Moll 174 51 {73] Assignec: Textron, Inc., Providence, R.l. [22] Filed. Feb 7 1972 Primary ExaminerGeorge E. Lowrance Assistant Examiner.lames R. Garrett |2l Appl. N0-.: 224,009 Att0rneyFrederick .l. Olsson [52] US. Cl. 220/13, 174/48 57 ABSTRACT [5 1] Int. Cl H02g 3/08 [58] Field of Search 220/32, 3.3; A a husmg made of clear P 174/48 carbonate plastic and having a painted interior surface, the clear plastic providing a colored appearance for the [56] References Cited fitting and also protecting the colored surface from damage as by scufi'mg, etc.

1 Claim, 4 Drawing Figures FLOOR FITTING This invention relates to electrical underfloor distribution systems and in particular relates to improvements in colored floor or service fittings.

The principle object of the invention is to provide colored floor fittings constructed so that the color producing medium cannot be scraped, scuffed or otherwise damaged while the fitting is installed on the floor.

The invention will be described below in conjunction with the following drawings wherein:

FIG. 1 is a perspective exterior view of a floor fitting incorporating the invention;

FIG. 2 is an exploded view of the fitting of FIG. 1;

FIG. 3 is an enlarged sectional view taken along lines 3-3 of FIG. 1; and

FIG. 4 is a sectional elevational view taken along lines 4-4 of FIG. 3.

In FIG. 1 the floor fitting 1 is disposed on the floor 2. In such position, the fitting is clearly visible and also is susceptible to being contacted by the foot of a person working at a desk or being struck by moving a moving object such as a chair or by a cart or the like.

The fitting 1 includes the base 3 and hollow housing 4 which is adapted to fit down on the base. A pair of posts 5 on the base receive screws 6 for locking the housing in position. A pair of posts 10 hold the the power receptacle 11 by screws 12. The receptacle extends through the aperture 13 and provides electrical communication between the inside and the outside of the housing. It will be understood that where the floor fitting is to provide a communication outlet, the apertures 13 are omitted and a single aperture with a grommet to hold a telephone cable is provided.

The base 3 mounts the housing for communication with the underfloor system. The base 3 has an aperture l4 receiving the nipple 15 which connects with an insert indicated by the dotted lines 16. The insert is connected to one of the ducts (not shown) in the system. The type of connection described is shown in U.S. Pat. No. 3,514,525 assigned to the assignee of this invention.

The housing 4 is molded from clear polycarbonate plastic such as Cycolac EP 3510 by Marbon Chemical Co. Preferably the wall of the housing is approximately 0.093 inch thick. This makes a high strength housing easily able to withstand static or impact loads which might be encountered in an office without cracking or collapsing. The outer surface 20 of the housing is hard or durable and highly scratch resistant.

The inside surface 21 is spray painted with a fire retardant paint such as Bee Chemical Co. paint No. l0l45-R5 which is self-extinguishing and will not support combustion. ln FIGS. 3 and 4 the paint is indicated by the heavy black line 22. A fire retardant paint is used in order to minimize chances of fire in the event of an electrical fault inside the housing.

The paint is of any desired color. The fitting partakes of this color since the inside painted surface is fully visible through the transparent wall.

It will be apparent that the plastic provides a protective shield for the inside colored surface. The surface cannot be damaged even if the housing is kicked or otherwise contacted.

I claim:

1. In a floor fitting for an electrical underfloor distribution system:

means forming a hollow housing and means for mounting the housing for communication with the underfloor system, the means forming the housing being clear, molded, polycarbonate plastic and the inside surface of the housing having a coating of fire retardant paint, the clear plastic providing for the paint of the inside surface to be seen from a position away from the housing whereby the housing partakes of a color the same as the paint and also the plastic providing a protective shield preventing the paint on the inside surface from being damaged by objects striking the outside surface of the housing; and

aperture means formed in said housing and being for use in providing electrical communication between inside and outside the housing.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2738892 *Sep 23, 1952Mar 20, 1956Robertson Co H HElectrical floor fitting
US2867349 *Oct 1, 1953Jan 6, 1959Union Insulating Co IncMolded plastic articles such as outlet boxes
US3047650 *Jun 24, 1959Jul 31, 1962Square D CoService fitting housing for under-floor wiring system
US3651245 *Dec 22, 1969Mar 21, 1972Moll Oswin CJunction box and grounding means therefor
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4240688 *Oct 1, 1979Dec 23, 1980Amp IncorporatedFloor fixture
US4270833 *May 25, 1979Jun 2, 1981Thomas & Betts CorporationReinforced electrical connector junction means
US4387949 *Mar 12, 1981Jun 14, 1983Thomas & Betts CorporationTransition connection apparatus having grounding feature
US4504698 *Apr 6, 1982Mar 12, 1985Thomas & Betts CorporationCover for electrical receptacle
US5973268 *Dec 9, 1997Oct 26, 1999Cheng; Yu-FengWith pvc coating of different color than other layers
US6042426 *Nov 12, 1997Mar 28, 2000Byrne; Norman R.Multi-user electrical services outlet
EP1166677A1 *Jun 8, 2001Jan 2, 2002A. & H. Meyer GmbH Leuchten und BüroelektrikTabletop plug
Classifications
U.S. Classification220/3.3, 174/483
International ClassificationH02G3/18
Cooperative ClassificationH02G3/185
European ClassificationH02G3/18B
Legal Events
DateCodeEventDescription
Jul 11, 1994ASAssignment
Owner name: BUTLER MANUFACTURING COMPANY, MISSOURI
Free format text: SECURITY INTEREST;ASSIGNOR:CERTAIN BANKS AND MORGAN GUARANTY TRUST COMPANY;REEL/FRAME:007052/0953
Effective date: 19940624
Aug 28, 1989ASAssignment
Owner name: MORGAN GUARANTY TRUST COMPANY OF NEW YORK
Free format text: SECURITY INTEREST;ASSIGNOR:BUTLER MANUFACTURING COMPANY;REEL/FRAME:005252/0023
Effective date: 19890824
Jun 8, 1981ASAssignment
Owner name: BUTLER MANUFACTURING COMPANY, A CORP. OF DE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TEXTRON INC.;REEL/FRAME:003861/0986
Effective date: 19810511