Patent US3885148A successfully refreshed from Google Patents.
US3885148A
Expired / Lapsed
US
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Flashlight
Assignee: Lawrence Peska Associates Inc
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Filing: 1973-08-03
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Granted: 1975-05-20
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Expires: 1993-08-03
Abstract
Abstract A flashlight employing cylindrical batteries with a pivotably insertable plate insertable into and out of the flashlight case between the two batteries, the plate acting as a conducting surface between the rear terminal of the battery and the switch. Preferably the switch is a dimmer switch.
Inventors
- 👤 Benedetto Nicholas Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:19
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; F21V23/0414
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
A flashlight employing at least one cylindrical battery of the dry cell type, said flashlight comprising a head having a socket in which a bulb is mounted; a cylindrically shaped case capable of holding at least two batteries, said case having a transverse slot partially cut through a midpoint of said case at a point approximately adjacent to a rear of a first battery in contact with said bulb; a plate pivotally mounted on said case and insertable through said transverse slot; said plate having a conductive surface facing the head and a non-conducting rear surface facing a second battery, and a switch mounted on said case and conductively connected to said plate and said socket.
Claim 2
Dependent Claim
116 words
A flashlight employing at least one cylindrical battery of the dry cell type, said flashlight comprising a head having a socket in which a bulb is mounted; a cylindrically shaped case capable of holding at least two batteries, said case having a transverse slot partially cut through a midpoint of said case at a point approximately adjacent to a rear of a first battery in contact with said bulb; a plate pivotally mounted on said case and insertable through said transverse slot; said plate having a conductive surface facing the head and a non-conducting rear surface facing a second battery, and a switch mounted on said case and conductively connected to said plate and said socket.
Claim 3
Dependent Claim
32 words
The flashlight of claim 1 wherein said plate comprises a tip extending outside of said case when said plate is inserted into said case, said tip being easily contacted by a fingertip.
Claim 4
Dependent Claim
22 words
The flashlight according to claim 1 wherein said plate comprises biasing means for forcing said first battery into contact with the bulb.
Claim 5
Dependent Claim
13 words
The flashlight according to claim 1, wherein said switch is a dimmer switch.
Claim 6
Dependent Claim
21 words
The flashlight of claim 4 wherein said plate comprises biasing means for forcing said first battery into contact with the bulb.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |