Patent US2034833A successfully refreshed from Google Patents.
US3758773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flashlight
Assignee: SAFT Societe des Accumulateurs Fixes et de Traction SA
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Filing: 1972-09-20
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Granted: 1973-09-11
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Expires: 1992-09-20
Abstract
Abstract A flashlight including a bulb and an electric power source preferably in the form of a battery of series-connected cells within a casing having a cover, one terminal of the battery being in permanent electric connection with the center contact stud of the bulb of the flashlight via a resilient blade welded or soldered to the metal can of one of the cells which can constitute said terminal of the battery. The second terminal of the battery constituted by the center stud of another of the series-connected cells is connectable at will to the base of the bulb by deformation of a second resilient blade through the agency of a movable control means. In order to insure accurate positioning of the second blade and reliability of contact of one of its extremities with the said cell center stud on appropriate movement of the control means and reliability of contact of the other extremity of said second blade with the base of the bulb, the second resilient blade is fastened securely and permanently to an inner surface of the cover so as to position and provide proper location of the two extremities relative to said cell stud and bulb base.
Inventors
- 👤 G Nau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:54
CPC Classifications
F; F21; F21L; F21L4/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
254 words
In a flashlight of the type comprising a source of electric power and a bulb within a casing containing said source and including a cover secured to said casing, said bulb having a center contact stud aNd a conductive base, a bulb receiving tubular socket forming an integral part of said cover, a metallic member connected conductively to one terminal of said source and lying in electric contact with said center contact stud of said bulb, when the latter is mounted in said socket, a resilient metallic blade, a flat support surface portion for said blade on and within said cover adjacent to said socket, said socket having a notch in its length exposing a portion of said base and said flat surface portion lying adjacent to said notch, said resilient blade having an extremity projecting through said notch into electrical contact with the said portion of said base for maintaining said bulb securely in said socket, and also having a portion adjoining said extremity mounted on said flat surface portion, fastening means at said flat surface portion for securing said blade to said support means and preventing rotation thereof, said resilient blade having its other extremity overlying but normally out of contact with a second terminal of said source, said other extremity being movable in opposition to the resiliency bias of said blade into and out of circuit-closing condition with said second terminal of said source, and movable control means mounted on said cover and engaging said blade for effecting such movement thereof.
Claim 2
Dependent Claim
254 words
In a flashlight of the type comprising a source of electric power and a bulb within a casing containing said source and including a cover secured to said casing, said bulb having a center contact stud aNd a conductive base, a bulb receiving tubular socket forming an integral part of said cover, a metallic member connected conductively to one terminal of said source and lying in electric contact with said center contact stud of said bulb, when the latter is mounted in said socket, a resilient metallic blade, a flat support surface portion for said blade on and within said cover adjacent to said socket, said socket having a notch in its length exposing a portion of said base and said flat surface portion lying adjacent to said notch, said resilient blade having an extremity projecting through said notch into electrical contact with the said portion of said base for maintaining said bulb securely in said socket, and also having a portion adjoining said extremity mounted on said flat surface portion, fastening means at said flat surface portion for securing said blade to said support means and preventing rotation thereof, said resilient blade having its other extremity overlying but normally out of contact with a second terminal of said source, said other extremity being movable in opposition to the resiliency bias of said blade into and out of circuit-closing condition with said second terminal of said source, and movable control means mounted on said cover and engaging said blade for effecting such movement thereof.
Claim 3
Dependent Claim
22 words
In a flashlight according to claim 1, wherein said fastening means comprises means projecting from said flat portion and engaging said blade.
Claim 4
Dependent Claim
19 words
In a flashlight according to claim 2, the means projecting from said flat portion being a headed pin-like member.
Claim 5
Dependent Claim
21 words
In a flashlight according to claim 2, the means projecting from said flat portion being ribs extending from said flat portion.
Claim 6
Dependent Claim
17 words
In a flashlight according to claim 2, the means projecting from said flat portion being turned-over ribs.
Claim 7
Dependent Claim
27 words
In a flashlight according to claim 1, said flat portion including a rib along an edge thereof in contact with at least one side of said blade.
Claim 8
Dependent Claim
30 words
In a flashlight according to claim 1, said support surface portion being integral with said cover and including a thickened wall portion on which said flat surface portion is provided.
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |