Patent US3671734A successfully refreshed from Google Patents.
US3671734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reloadable electric flashlight
Assignee: Les Piles Wonder SA
•
Filing: 1970-12-21
•
Granted: 1972-06-20
•
Expires: 1990-12-21
Abstract
Abstract A battery and case assembly attachable to the head of a flashlight to facilitate replacement of batteries. The head has a recess and the case has a closure member at the end thereof received into the recess. The closure member includes a pierced cap and readily breakable means attaching the cap to an annulus around the cap. A sleeve secured to the annulus spaces the batteries from the annulus and prevents normal electrical contact with the batteries until the cap is detached from the annulus.
Inventors
- 👤 Rene M Angibaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:59
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/20; H01M50/204; H01M50/207; H01M50/213; F; F21; F21L; F21L2/00; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
178 words
A reload assembly for an electric flashlight having a cylindrical case containing cylindrical battery means, the negative end of said battery means being supported upon a wall at one end of the case and electrically connected thereto by a resilient member, the flashlight including head means adapted to support a lightbulb and having means defining a recess into which the other end of the case is received and releasably held, characterized by: closure means disposed within said case at said other end thereof said closure means having cap means adjacent said other end and pierced with a central opening, said closure means having annular means surrounding the periphery of said cap means and breakable attaching means connecting said cap means to said annular means; and sleeve means secured to said annular means and extending axially of said case for engagement with the adjacent, positive end of said battery means, whereby the positive terminal of battery means is obstructed from electrical contact until said cap means is disengaged from said annular means by the breaking of said attaching means.
Claim 2
Dependent Claim
178 words
A reload assembly for an electric flashlight having a cylindrical case containing cylindrical battery means, the negative end of said battery means being supported upon a wall at one end of the case and electrically connected thereto by a resilient member, the flashlight including head means adapted to support a lightbulb and having means defining a recess into which the other end of the case is received and releasably held, characterized by: closure means disposed within said case at said other end thereof said closure means having cap means adjacent said other end and pierced with a central opening, said closure means having annular means surrounding the periphery of said cap means and breakable attaching means connecting said cap means to said annular means; and sleeve means secured to said annular means and extending axially of said case for engagement with the adjacent, positive end of said battery means, whereby the positive terminal of battery means is obstructed from electrical contact until said cap means is disengaged from said annular means by the breaking of said attaching means.
Claim 3
Dependent Claim
49 words
A reload assembly according to claim 1, wherein the attaching means is automatically broken by the base of the lightbulb as the case is received into the recess of the head means and, thereafter, said lightbulb base electrically contacts said battery means through the opening in said cap means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |