Patent US4388677A successfully refreshed from Google Patents.
US4388677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recessed lighting unit
Assignee: Prescolite A Division Of Us Industries
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Filing: 1981-01-02
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Granted: 1983-06-14
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Expires: 2001-01-02
Abstract
Abstract A recessed lighting unit for supporting an energizing lamp adapted to fit into an electrical socket using a housing. The electrical socket and lamp are mounted in the housing. The housing includes an opening for the passage of light from the lamp to the area to be illuminated. A source of power runs to the socket through a wireway. A heat protection mechanism interrupts the flow of electrical power to the lamp and socket upon the generation of excess heat in the vicinity of the housing. The heat protection mechanism is mounted immediately adjacent the housing in the wireway and forms a structural unit with the housing and a junction box.
Inventors
- 👤 James B. Druffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:34
CPC Classifications
F; F21; F21V; F21V25/00; F21V25/10; F21S; F21S8/00; F21S8/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
A recessed lighting unit for supporting and energizing a lamp and electrical socket therefor comprising: a. a housing having means for mounting the electrical lamp and socket thereto, and having an opening for passage of light therethrough emanating from the lamp; b. means for providing electrical power to the electrical lamp and socket; c. thermoprotector means for detecting heat in the vicinity of said housing and interrupting electrical power provided by said means for providing electrical power to the electrical lamp and socket upon the detection of a selected temperature by said thermoprotector means; d. means for mounting said thermoprotector means adjacent and housing a selected distance from the electrical lamp and socket.
Claim 2
Dependent Claim
113 words
A recessed lighting unit for supporting and energizing a lamp and electrical socket therefor comprising: a. a housing having means for mounting the electrical lamp and socket thereto, and having an opening for passage of light therethrough emanating from the lamp; b. means for providing electrical power to the electrical lamp and socket; c. thermoprotector means for detecting heat in the vicinity of said housing and interrupting electrical power provided by said means for providing electrical power to the electrical lamp and socket upon the detection of a selected temperature by said thermoprotector means; d. means for mounting said thermoprotector means adjacent and housing a selected distance from the electrical lamp and socket.
Claim 3
Dependent Claim
39 words
The recessed lighting unit of claim 1 in which said housing includes a slot and said means for mounting said thermoprotector means adjacent said housing includes a container having an element which slidingly engages said slot in said housing.
Claim 4
Dependent Claim
50 words
The recessed lighting unit of claim 2 in which said means for providing electrical power includes an electrical junction box and means for mechanically connecting said electrical junction box to said housing; and said container includes means for connecting said container to said junction box to form a structural unit.
Claim 5
Dependent Claim
79 words
The recessed lighting unit of claim 3 in which said housing includes at least one door hingedly attached to said housing at one end portion and including means for latching said door to said housing at another end portion, said latching means including providing said housing with an opening therethrough and including a spring element having a bent portion, said spring element connected to and projecting from said door and being capable of occupying said opening through said housing.
Claim 6
Dependent Claim
96 words
The recessed lighting unit of claim 1 which additionally comprises a hangar mechanism relative to a pair of beams including: a. a pair of elongated members movable in relation to one another, at least one of said elongated members including a shaft and an end portion having an end piece fixed at an angle to said shaft, and a lip fixed to said end piece at an angle; b. means for supporting said pair of elongated members to said housing; c. means for fastening each of said pair of elongated members to each of the beams.
Claim 7
Dependent Claim
78 words
The recessed lighting unit of claim 5 in which said means for fastening each of said pair of elongated members to each of the beams comprises said end piece on said at least one of said elongated members including a split member having a first and second portion, said first portion of said split member being bent into a first and second section, said first section including an end portion being capable of penetrating any of the beam.
Claim 8
Dependent Claim
16 words
The recessed lighting unit of claim 6 in which said end piece includes an opening therethrough.
Claim 9
Dependent Claim
34 words
The recessed lighting unit of claim 2 in which said container element further includes a tab which is capable of extending along and adjacent to the portion of said housing next to said slot.
Claim 10
Dependent Claim
17 words
The recessed lighting unit of claim 8 in which said element is resiliently attached to said container.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |