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US3792250A Expired / Lapsed US ⏱️ 0.0 years remaining

Light fixture with removable lens

Assignee: Progressive Dynamics Inc
•
Filing: 1970-05-05
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Granted: 1974-02-12
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Expires: 1990-05-05
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Abstract

Abstract A surface mounted light fixture particularly suitable for use with recreational vehicles and watercraft wherein the fixture includes an extruded body member having end caps affixed to the body member ends. The body member is of a concave configuration receiving electrical lamps, and the lateral edge regions of the body member include lens retaining grooves for retaining a lens or lenses disposed over the body member. The lens is of a rectangular configuration, including transversely disposed base and wall regions, and is so shaped that the lens may be manually deformed for readily assemblying and disassemblying the lens to the body member for lamp replacement or cleaning.

Inventors

  • 👤 E Kilbourn
  • 👤 J Baker

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 17:57
CPC Classifications
B; B60; B60Q; B60Q3/00; B60Q3/70; B60Q3/74

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 432 words
A light fixture characterized by its economy of construction, ease of assembly and maintenance and attractive appearance comprising, in combination, an elongated body member formed by an extrusion process having ends and lateral edges including overlapping portions, said body member including a recessed central region intermediate said lateral edges, a longitudinally extending lens retaining groove defined in said body member adjacent each lateral edge by said overlapping portions and extending the length of said body member, said grooves each having an opening extending toward said central region, longitudinally extending base elements formed on said body member defining fixture support surfaces, a lamp mounted on said body member recessed central region, an end cap mounted on each end of said body member having a width and height substantially corresponding to the width and height of said body member, a rectangular light transmitting lens mounted on said body member extending over said lamp and formed of a sheet material manually bendable upon applying manual forces thereto in a direction transverse to the plane of the material and resistant to manual bending upon applying forces in a direction substantially parallel to the plane of the material, said lens being of a dished configuration including a rectangular central base region, four planar peripheral wall regions depending from said base region transversely disposed to said base region and substantially perpendicularly disposed to the adjacent wall regions, and a peripheral lip outwardly extending from at least two of said wall regions located on opposite sides of said base region and spaced from said base region, said lips each including an outer edge, a central region and end regions, said lips on opposIte sides of said base region being parallel to each other constituting lateral lips extending in the longitudinal direction of said body member and the spacing between the outer edges of said lateral lips'' central regions being greater than the spacing between said body member overlapping portions whereby said lateral lips'' central regions are received within said lens retaining grooves, said lateral lips'' end regions being of reduced width with respect to the associated lip central region whereby said reduced width end regions are removed from said grooves and the length of the wall regions disposed transversely of the body member length are defined by the reduced width of said lateral lips'' end regions and is no greater than the spacing between said overlapping portions, manual deformation of said lateral lips and their associated wall regions toward each other removing said central regions within said grooves from said grooves for releasing said lens from said body member.
Claim 2
Dependent Claim 432 words
A light fixture characterized by its economy of construction, ease of assembly and maintenance and attractive appearance comprising, in combination, an elongated body member formed by an extrusion process having ends and lateral edges including overlapping portions, said body member including a recessed central region intermediate said lateral edges, a longitudinally extending lens retaining groove defined in said body member adjacent each lateral edge by said overlapping portions and extending the length of said body member, said grooves each having an opening extending toward said central region, longitudinally extending base elements formed on said body member defining fixture support surfaces, a lamp mounted on said body member recessed central region, an end cap mounted on each end of said body member having a width and height substantially corresponding to the width and height of said body member, a rectangular light transmitting lens mounted on said body member extending over said lamp and formed of a sheet material manually bendable upon applying manual forces thereto in a direction transverse to the plane of the material and resistant to manual bending upon applying forces in a direction substantially parallel to the plane of the material, said lens being of a dished configuration including a rectangular central base region, four planar peripheral wall regions depending from said base region transversely disposed to said base region and substantially perpendicularly disposed to the adjacent wall regions, and a peripheral lip outwardly extending from at least two of said wall regions located on opposite sides of said base region and spaced from said base region, said lips each including an outer edge, a central region and end regions, said lips on opposIte sides of said base region being parallel to each other constituting lateral lips extending in the longitudinal direction of said body member and the spacing between the outer edges of said lateral lips'' central regions being greater than the spacing between said body member overlapping portions whereby said lateral lips'' central regions are received within said lens retaining grooves, said lateral lips'' end regions being of reduced width with respect to the associated lip central region whereby said reduced width end regions are removed from said grooves and the length of the wall regions disposed transversely of the body member length are defined by the reduced width of said lateral lips'' end regions and is no greater than the spacing between said overlapping portions, manual deformation of said lateral lips and their associated wall regions toward each other removing said central regions within said grooves from said grooves for releasing said lens from said body member.
Claim 3
Dependent Claim 26 words
In a light fixture as in claim 1 wherein said two wall region lips end regions are notched to define reduced widths at said end regions.
Claim 4
Dependent Claim 84 words
In a light fixture as in claim 1 wherein a peripheral outwardly extending lip is defined on each of said transverse wall regions, a plurality of identical light transmitting lens mounted on said body member, a plurality of lamps mounted on said body member, a lamp being associated with each lens, said body member being of a length slightly less than a multiple of the dimension separating the outer edges of said transverse wall regions lips, the adjacent transverse lips of adjacent lenses overlapping.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-02-11 1977-08-13 1978-02-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-11 1981-08-13 1982-02-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-11 1985-08-13 1986-02-12 $7700.00 Window Closed / Lapsed

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