US4528621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flashlight
Assignee: Individual
•
Filing: 1984-03-05
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Granted: 1985-07-09
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Expires: 2004-03-05
Abstract
Abstract A flashlight is disclosed with a housing having a flexible sidewall which is deformed onto a resiliently folded membrane switch to energize and light the flashlight. The flashlight may have a bulb cap at the end of the housing carrying the light bulb with phosphorescent material being molded into the bulb cap and activated by the use of the flashlight to produce a phosphorescent afterglow at the bulb cap.
Inventors
- 👤 Robert Hoyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:05
CPC Classifications
F; F21; F21L; F21L2/00; F21V; F21V9/00; F21V9/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
161 words
A flashlight comprising a housing having a flexible side wall, adapted to be inwardly and resiliently flexibly deformed to energize and light said flashlight; a battery retaining case adapted to hold a pair of batteries in spaced relation; a light bulb having at least two electrical leads for electrical connection with the batteries; a membrane switch means including a flexible, flat insulator strip between said housing and said retaining case, said membrane switch means including a head portion for connecting the leads of said bulb with said batteries, said membrane switch means including a first and second conductor bonded on said flexible substrate insulator strip, said conductors terminating in a first and second switch contact, said membrane switch means having a resiliently folded portion carrying said switch contacts so that when the housing is flexibly deformed said first and second switch contacts are connected to complete an electrical path through said conductors on said insulator strip means to energize said flashlight.
Claim 2
Dependent Claim
161 words
A flashlight comprising a housing having a flexible side wall, adapted to be inwardly and resiliently flexibly deformed to energize and light said flashlight; a battery retaining case adapted to hold a pair of batteries in spaced relation; a light bulb having at least two electrical leads for electrical connection with the batteries; a membrane switch means including a flexible, flat insulator strip between said housing and said retaining case, said membrane switch means including a head portion for connecting the leads of said bulb with said batteries, said membrane switch means including a first and second conductor bonded on said flexible substrate insulator strip, said conductors terminating in a first and second switch contact, said membrane switch means having a resiliently folded portion carrying said switch contacts so that when the housing is flexibly deformed said first and second switch contacts are connected to complete an electrical path through said conductors on said insulator strip means to energize said flashlight.
Claim 3
Dependent Claim
19 words
A flashlight as recited in claim 1 wherein said first and second conductors are printed on a plastic sheet.
Claim 4
Dependent Claim
30 words
A flashlight as recited in claim 2 wherein said first and second conductors are laminated into said plastic sheet with said first and second switch contact having exposed contact surfaces.
Claim 5
Dependent Claim
72 words
A flashlight as recited in claim 1 wherein said first and second conductors include light contacts for electrical connection of said bulb with said batteries, said conductors terminating in a first switch and a second switch each having exposed contact surfaces which are electrically engaged when said housing is resiliently and flexibly deformed causing membrane switch to resiliently fold and electrically engage said exposed contact surfaces and energize and light said flashlight.
Claim 6
Dependent Claim
211 words
A flashlight for receiving a pair of batteries having terminal posts comprising a housing having a flexible side wall, adapted to be inwardly and resiliently flexibly deformed to energize and light said flashlight; a battery retaining case adapted to hold a pair of batteries in spaced relation; a light bulb having at least two electrical leads for electrical connection with the batteries; and electrical circuit means for connecting the bulb to the batteries to energize the same; a flexible insulator substrate in said electrical circuit means between said housing and said retaining case, and having a head portion adjacent said bulb and the location of the battery terminal posts and a second switch contact portion having resiliently spaced sections; first and second conductors on said flexible insulators substrate for conducting electrical current in said circuit means and extending into said head portion for connecting with said bulb leads and battery terminal posts, and switch contacts on said resiliently spaced sections of said flexible insulator substrate and each connected to one of said conductors and normally spaced from each other by the resiliently spaced sections, said resiliently spaced sections of said insulator substrate being displaced to bring the switch contacts into engagement when the housing is flexibly deformed to energize the bulb.
Claim 7
Dependent Claim
211 words
A flashlight for receiving a pair of batteries having terminal posts comprising a housing having a flexible side wall, adapted to be inwardly and resiliently flexibly deformed to energize and light said flashlight; a battery retaining case adapted to hold a pair of batteries in spaced relation; a light bulb having at least two electrical leads for electrical connection with the batteries; and electrical circuit means for connecting the bulb to the batteries to energize the same; a flexible insulator substrate in said electrical circuit means between said housing and said retaining case, and having a head portion adjacent said bulb and the location of the battery terminal posts and a second switch contact portion having resiliently spaced sections; first and second conductors on said flexible insulators substrate for conducting electrical current in said circuit means and extending into said head portion for connecting with said bulb leads and battery terminal posts, and switch contacts on said resiliently spaced sections of said flexible insulator substrate and each connected to one of said conductors and normally spaced from each other by the resiliently spaced sections, said resiliently spaced sections of said insulator substrate being displaced to bring the switch contacts into engagement when the housing is flexibly deformed to energize 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) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |