US4893221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable light
Assignee: Individual
•
Filing: 1989-07-19
•
Granted: 1990-01-09
•
Expires: 2009-07-19
Abstract
Abstract A portable light including a flat battery case with a lamp housing pivotally joined to one edge thereof and projecting therefrom for movement between a closed position generally coplanar with the battery case and an open position pivoted upward therefrom. In the closed position the open face of the lamp housing closes against and is protected by a closure plate rigid with and extending from the battery case. The bulb in the lamp housing is automatically illuminated in response to an open pivoting of the lamp housing relative to the battery case through switch contacts which engage in response to pivotal movement of the lamp housing.
Inventors
- 👤 Arthur S. Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:45
CPC Classifications
F; F21; F21L; F21L4/00; F21L4/04; F21V; F21V23/00; F21V23/04; F21V23/0414; Y; Y10; Y10S; Y10S362/00; Y10S362/802
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
142 words
A portable light comprising a battery case, a lamp housing, means mounting said lamp housing to said battery case for pivotal movement of the lamp housing between a closed position and an open position, means for forming an electrical circuit between said battery case and said lamp housing, said lamp housing defining a bulb compartment with an open face, said lamp housing projecting laterally from said battery case, a closure plate rigid with said battery case and projecting therefrom, said lamp housing, in the closed position, having the open face thereof engaged with and closed by said closure plate, and switch means for selectively opening and closing said circuit in response to pivotal movement of said lamp housing for closing said circuit in the open position of the lamp housing, and opening said circuit in the closed position of the lamp housing.
Claim 2
Dependent Claim
142 words
A portable light comprising a battery case, a lamp housing, means mounting said lamp housing to said battery case for pivotal movement of the lamp housing between a closed position and an open position, means for forming an electrical circuit between said battery case and said lamp housing, said lamp housing defining a bulb compartment with an open face, said lamp housing projecting laterally from said battery case, a closure plate rigid with said battery case and projecting therefrom, said lamp housing, in the closed position, having the open face thereof engaged with and closed by said closure plate, and switch means for selectively opening and closing said circuit in response to pivotal movement of said lamp housing for closing said circuit in the open position of the lamp housing, and opening said circuit in the closed position of the lamp housing.
Claim 3
Dependent Claim
98 words
The portable light of claim 1 wherein said battery case includes an upper face panel, peripheral walls rigid with and depending from said face panel and defining a battery compartment, said peripheral walls including a forward wall, said closure plate extending forwardly from said forward wall in spaced relation to and below said upper face panel, said lamp housing extending from said forward wall, said lamp housing, in the closed position thereof, extending generally parallel to said battery case, said lamp housing, in the open position thereof, extending above and at an angle to said upper face panel.
Claim 4
Dependent Claim
32 words
The portable light of claim 2 including a planar lower backing panel on said battery case generally paralleling said upper face panel, said closure plate being generally coplanar with said backing panel.
Claim 5
Dependent Claim
70 words
The portable light of claim 3 wherein the peripheral walls of the battery case include a rear wall generally opposed and parallel to said forward wall, and an adjustable neck strap secured to the rear wall at a pair of spaced points and extending in a loop therefrom, whereby said portable light can depend from the neck of a user with the lamp housing downwardly directed relative to the neck.
Claim 6
Dependent Claim
20 words
The portable light of claim 4 wherein said backing panel is selectively removable to allow access to said battery compartment.
Claim 7
Dependent Claim
66 words
The portable light of claim 5 wherein said switch means comprises a pair of contacts in said circuit spaced from each other in the closed position of said lamp housing, and means for engaging said contacts upon movement of said lamp housing to the open position, said open position comprising a range of pivotal movement of said lamp housing away from engagement with said closure plate.
Claim 8
Dependent Claim
112 words
A portable light comprising a flat battery case including opposed generally planar upper face and lower pack panels with peripheral walls therebetween defining a battery compartment, a lamp housing extending from a peripheral wall of said battery case, means mounting said lamp housing on said battery case for pivotal movement between a closed position projecting from said battery case in substantial parallel alignment with said battery case and an open position projecting from said battery case, at an outwardly inclined angle to said face panel, and wherein said lamp housing includes a bulb compartment with an open face, and means closing said open face in the closed position of said lamp housing.
Claim 9
Dependent Claim
112 words
A portable light comprising a flat battery case including opposed generally planar upper face and lower pack panels with peripheral walls therebetween defining a battery compartment, a lamp housing extending from a peripheral wall of said battery case, means mounting said lamp housing on said battery case for pivotal movement between a closed position projecting from said battery case in substantial parallel alignment with said battery case and an open position projecting from said battery case, at an outwardly inclined angle to said face panel, and wherein said lamp housing includes a bulb compartment with an open face, and means closing said open face in the closed position of said lamp housing.
Claim 10
Dependent Claim
57 words
The portable light of claim 7 wherein said means closing said open face comprises a plate extending from the battery case below and substantially parallel to said lamp housing in the closed position thereof, said open face of said bulb compartment being directed toward and closed by said plate in the closed position of said lamp housing.
Claim 11
Dependent Claim
18 words
The portable light of claim 8 including means for releasably retaining said lamp housing in said closed position.
Claim 12
Dependent Claim
28 words
The portable lamp of claim 9 wherein said plate extends from said battery case at an upwardly inclined acute angle relative to the plane of the back panel.
Claim 13
Dependent Claim
52 words
The portable light of claim 9 including an electrical circuit between said battery case and said lamp housing, and switch means for opening said circuit in response to movement of said lamp housing to said closed position and closing said circuit in response to movement of said housing to said open position.
References Cited (Backward Citations)
US1247346A
Cited
US1360988A
Cited
US1403378A
Cited
US1406452A
Cited
US1470432A
Cited
US1825088A
Cited
US1820960A
Cited
US1984398A
Cited
US2320193A
Cited
US3225982A
Cited
US3479499A
Cited
US3731084A
Cited
US4298913A
Cited
US4459646A
Cited
US4432042A
Cited
US4631644A
Cited
US4680681A
Cited
US4794496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |