US4459646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flashlight construction
Assignee: Duracell Inc USA
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Filing: 1983-05-27
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Granted: 1984-07-10
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Expires: 2003-05-27
Abstract
Abstract A flashlight construction is disclosed, which comprises a body portion, a head portion attached to the body portion and pivotable about a single pivot axis, and through a pivot arc that lies in the longitudinal plane of the body portion, the body portion adapted to contain at least one battery and the head portion adapted to contain a light bulb. Separate electrical contact means are located in the body portion and the head portion and slidably engage with each other. The electrical contact means cooperates to define an electrical switch means that controls the flow of electrical current. The switch means is located inboard of the head portion and adjacent the pivot axis. Accordingly, the flashlight may be switched off by rotating the head portion into position in abuttment with the body portion, while switching the flashlight on as accomplished by rotating the head portion away from such abuttment. The head portion is adjustable to a plurality of positions along its pivot arc, and may remain fixed in any one of these positions, to permit adjustment in the direction of a beam of light emitted by the light bulb. The flashlight may be prepared from a variety of materials, such as plastics materials which are resilient and durable in use.
Inventors
- 👤 John H. Drane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:38
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; F21V23/0414; F21L; F21L4/00; F21L4/04; F21L4/045; F21V17/00; F21V17/10; F21V17/16; F21V17/164; F21V5/00; F21V5/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
154 words
A flashlight comprising: a. a body portion; b. a head portion attached to said body portion and pivotal through a pivot arc about a single pivot axis, said pivot arc lying in the longitudinal plane of said body portion; c. at least one battery in said body portion, and a light bulb in said head portion; d. separate electrical contact means respectively located in said body portion and said head portion, and slidably engagable with each other; e. electrical switch means defined by the said cooperation of separate electrical contact means, to control the flow of electrical current there-between, said switch means located inboard of said head portion and adjacent said pivot axis; f. wherein said flashlight is switched off when said head portion is positioned in abuttment with said body portion, and is switched on in any of a plurality of positions when said head portion is partially or completely pivotted away therefrom.
Claim 2
Dependent Claim
154 words
A flashlight comprising: a. a body portion; b. a head portion attached to said body portion and pivotal through a pivot arc about a single pivot axis, said pivot arc lying in the longitudinal plane of said body portion; c. at least one battery in said body portion, and a light bulb in said head portion; d. separate electrical contact means respectively located in said body portion and said head portion, and slidably engagable with each other; e. electrical switch means defined by the said cooperation of separate electrical contact means, to control the flow of electrical current there-between, said switch means located inboard of said head portion and adjacent said pivot axis; f. wherein said flashlight is switched off when said head portion is positioned in abuttment with said body portion, and is switched on in any of a plurality of positions when said head portion is partially or completely pivotted away therefrom.
Claim 3
Dependent Claim
36 words
The flashlight of claim 1 wherein said head portion is adjustable to a plurality of positions along its pivot arc, to permit adjustment in the direction of the beam of light emitted by said light bulb.
Claim 4
Dependent Claim
15 words
The flashlight of claim 1 wherein said pivot axis comprises paired, snap-fittably engagable axle stubs.
Claim 5
Dependent Claim
31 words
The flashlight of claim 2 further including incremental adjustment means communicating with said pivot axis to enable said head portion to reside in the plurality of positions along its pivot arc.
Claim 6
Dependent Claim
69 words
The flashlight of claim 4 wherein said adjustment means comprises: a. at least one radially projecting resilient cleat, defined by at least one axle stub; and b. a plurality of regularly spaced, radially extending grooves located on said head portion adjacent said pivot axis and in such location as to be capable of individually receiving said cleat as said head portion is pivotted in relation to said body portion.
Claim 7
Dependent Claim
15 words
The flashlight of claim 1 further including a lens removably mounted in said head portion.
Claim 8
Dependent Claim
12 words
The flashlight of claim 6 wherein said lens is generally convexly shaped.
Claim 9
Dependent Claim
33 words
The flashlight of claim 7 wherein said body portion defines a concavity along a portion thereof adapted to nestingly receive said lens when said head portion is in abuttment with said body portion.
Claim 10
Dependent Claim
51 words
The flashlight of claim 1 wherein said body portion comprises: a. a central frame; b. at least one battery cradle defined by said frame; and c. paired, bilateral cover members removably attachable to said frame, at least one of said cover members cooperating with said cradle to enclose said flashlight battery.
Claim 11
Dependent Claim
25 words
The flashlight of claim 9 wherein two batteries are used and paired battery cradles are located in parallel position within the perimeter of said frame.
Claim 12
Dependent Claim
47 words
The flashlight of claim 9 wherein said frame includes parallel spines extending along at least the longitudinal portions of its perimeter, said spines cooperating with said cover means to define a plurality of disengagable latch means for the snap-fittable securement of said cover members to said frame.
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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) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |