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US6152581: Housing frame for illuminated signs having multiple configurations

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Filing Information

Inventor(s) Andrew Edward Masters · James Michael Lay ·
Assignee(s) NSI Enterprises, Inc. ·
Attorney/Agent(s) Kenneth E. Darnell ·
Primary Examiner Thomas M. Sember ·
Application Number US9253873
Filing date 02/22/1999
Issue date 11/28/2000
Predicted expiration date 05/02/2017
U.S. Classifications 362/362  · 362/249  ·
International Classifications G09F 1304  ·
Kind CodeA
International Classifications 362362;812;249;800 ·
Related U.S. Application DataCROSS REFERENCE TO RELATED APPLICATIONS
This application is a divisional of U.S. applicatiion Ser. No. 08/850,494, filed May 2, 1997, now U.S. Pat. No. 5,988,825 with common inventors and assignee.
17 Claims, No Drawings


Abstract

A housing frame preferably formable as a single integral unit being capable of use as a primary structural portion of a housing suitable for multiple exit sign configurations, the several exit sign configurations of the invention being either intended for emergency or non-emergency operation and further being intended for use with different light sources and power sources. The frame and associated plates forming the housing of the invention are preferably formed from polymeric material of a thickness less than that of prior "plastic" housings, the strength and rigidity necessary to proper operation of the housing being provided by a functionally interrelated combination of structural elements which allows a substantial reduction in material used for formation of the housing.

Independent Claims | See all claims (17)

  1. 1. In a lighting fixture including a housing formed of a relatively low gauge material in order to cause the lighting fixture to be of a low weight, the housing having at least one cover plate attachable thereto to enclose an interior space within the housing means, the improvement comprising means for imparting structural integrity to the lighting fixture to enable said lighting fixture to be formed of sufficiently thin material which would not be capable of providing a necessary rigidity to the housing to cause the housing to be suitable for use as a lighting fixture housing.
  2. 10. In a lighting fixture including a housing formed of a relatively low gauge material in order to cause the lighting fixture to be of a low weight, the housing having at least one cover plate attachable thereto to enclose an interior space within the housing means, the improvement comprising means for imparting structural integrity to the lighting fixture to enable said lighting fixture to be formed of sufficiently thin material which would not be capable of providing a necessary rigidity to the housing to cause the housing to be suitable for use as a lighting fixture housing, the means for imparting structural integrity comprising stop elements carried by the cover plate at least along one lateral edge thereof, the stop elements each having at least one angled edge opposing portions of the housing at the juncture of the housing and the cover plate, a force directed against the housing or against the cover plate at said juncture therebetween being resisted by the stop elements through contact between the stop elements and opposing portions of the housing, a progressively increasing force being increasingly resisted by the angled edges of the stop elements.
  3. 12. In a lighting fixture including a housing formed of a relatively low gauge material in order to cause the lighting fixture to be of a low weight, the housing having at least one cover plate attachable thereto to enclose an interior space within the housing means, the improvement comprising means for imparting structural integrity to the lighting fixture to enable said lighting fixture to be formed of sufficiently thin material which would not be capable of providing a necessary rigidity to the housing to cause the housing to be suitable for use as a lighting fixture housing, and a platform carried within the housing along an interior wall of said housing and extending substantially the length of the wall and further comprising means carried by the housing for mounting and supporting the platform, the platform and the platform mounting and supporting means comprising a portion of the means for imparting structural integrity to the lighting fixture by acting to increase the rigidity of the housing.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US4549253 Flexillume Canada Ltd. Totten Oct 1985
US5217293 KOBZEFF PETE Kobzeff Jun 1993

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
CA2212760 NAT SERVICE IND INC MASTERS ANDREW EDWARD et al. Nov 1998
US6152581 NSI Enterprises, Inc. Andrew Edward Masters et al. Nov 2000