Patent US3794825A successfully refreshed from Google Patents.
US3794825A
Expired / Lapsed
US
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Waterproof flashlight
Assignee: Individual
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Filing: 1972-05-05
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Granted: 1974-02-26
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Expires: 1992-05-05
Abstract
Abstract A waterproof flashlight which includes a cast aluminum housing having as its only opening the lens support. The lens is sealed to the flashlight by compression against an O-ring with the lens being secured in place by a snap ring. A magnetic device actuates a reed switch to turn the light on and off without requiring openings through the housing.
Inventors
- 👤 C Krupansky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:39
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; F21V23/0414; F21L; F21L2/00; F21V31/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
195 words
A waterproof flashlight comprising a cast aluminum housing open at one end and closed at the opposite end, a ring integrally formed on said housing and surrounding the open end thereof, an annular recess formed internally of said ring and opening outwardly away from said housing, a circular transparent lens having an annular recess formed in the inner portion of the circumferential edge thereof, an O-ring seal engaged in the recess in said ring and the recess in said lens to seal said lens to said ring, an annular groove formed interiorly in said ring on said housing and a snap ring engaged in said groove holding said lens in engagement with said O-ring seal with said O-ring seal under compression, said ring on said housing having a plurality of notches opening from the outer edge of said ring and terminating outwardly of the internal annular recess in said ring to provide access for easy removal of said locking ring when removing saiD lens, said lens having an annular recess formed in the peripheral edge thereof for engagement by a prying tool inserted through one of said notches for removing said lens from said flashlight.
Claim 2
Dependent Claim
195 words
A waterproof flashlight comprising a cast aluminum housing open at one end and closed at the opposite end, a ring integrally formed on said housing and surrounding the open end thereof, an annular recess formed internally of said ring and opening outwardly away from said housing, a circular transparent lens having an annular recess formed in the inner portion of the circumferential edge thereof, an O-ring seal engaged in the recess in said ring and the recess in said lens to seal said lens to said ring, an annular groove formed interiorly in said ring on said housing and a snap ring engaged in said groove holding said lens in engagement with said O-ring seal with said O-ring seal under compression, said ring on said housing having a plurality of notches opening from the outer edge of said ring and terminating outwardly of the internal annular recess in said ring to provide access for easy removal of said locking ring when removing saiD lens, said lens having an annular recess formed in the peripheral edge thereof for engagement by a prying tool inserted through one of said notches for removing said lens from said flashlight.
Claim 3
Dependent Claim
30 words
A device as claimed in claim 1, wherein a reed relay switch and a magnetic actuator therefor are mounted in said housing for controlling said flashlight in a waterproof manner.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |