Patent US4443833A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4443833A Expired / Lapsed US ⏱️ 0.0 years remaining

Flashlight

Assignee: NORWOOD OPERATING Co
•
Filing: 1983-03-07
•
Granted: 1984-04-17
•
Expires: 2003-03-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A flashlight in accordance with the preferred embodiment of the invention includes a housing enclosing an insulating battery retaining member formed with spring arms for retaining a pair of batteries in spaced-apart relationship. Further included is a light bulb having a conductive support element one leg of which is in electrical contact with the surface of one battery while being maintained in fixed space relation between the retaining housing and the other positive battery post, as to the other leg. Adjacent the opposite end of the housing a conductive switch member is frictionally retained on the positive post of one battery and extends between the battery retaining member and a flexible wall of the housing. The other end of the switch member is located adjacent a cutout portion of the battery retaining member which exposes a conductive surface of the other of the batteries so that when the flexible wall of the housing is pressed, the free end of the switch member contacts the other of the batteries completing a circuit between the batteries and the light bulb.

Inventors

  • 👤 S. Harry Fazzina

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 21:22
CPC Classifications
F; F21; F21L; F21L2/00

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 319 words
A flashlight comprising: a housing having (a) a generally flexible side wall; (b) a first end wall; (c) a second end wall having an off-center opening therein; (d) an insulating, battery retaining member including resilient arm members adapted for retaining a pair of batteries having exposed conductive surfaces; (e) one of said batteries projects beyond the end of said battery retaining member adjacent said one end of said housing and wherein the other of said batteries projects beyond said battery retaining means adjacent said other end of said housing, and wherein said projecting portions are equal, whereby said positive post and the flat end wall of said other of said batteries path lie the same plane; (f) a light bulb at the end of said housing adjacent said second end wall with a portion of said light bulb extending through said off-center opening, said light bulb being electrically connected to one of said batteries; (g) a conductive member having an elbow-shaped configuration with one leg being frictionally retained between the conductive surface of said other battery and its adjacent battery retaining member and with the other leg being in fixed contact with the conductive socket of said light bulb, and is further provided with an aperture in the leg adjacent the lamp socket adapted to rotatably receive and take up said socket, which bulb itself is provided with a spiralled ridge configuration to threadedly engage said aperture; and (h) a conductive switch member having one leg frictionally retained on said positive post of said other battery, said switch member including a second leg portion extending between said flexible side wall and said battery retaining member and terminating adjacent a cutout portion of said battery retaining member, exposing a conductive portion of the other of said batteries, whereby said switch member completes a circuit between said batteries and said light bulb when compression is applied to the flexible side wall.
Claim 2
Dependent Claim 319 words
A flashlight comprising: a housing having (a) a generally flexible side wall; (b) a first end wall; (c) a second end wall having an off-center opening therein; (d) an insulating, battery retaining member including resilient arm members adapted for retaining a pair of batteries having exposed conductive surfaces; (e) one of said batteries projects beyond the end of said battery retaining member adjacent said one end of said housing and wherein the other of said batteries projects beyond said battery retaining means adjacent said other end of said housing, and wherein said projecting portions are equal, whereby said positive post and the flat end wall of said other of said batteries path lie the same plane; (f) a light bulb at the end of said housing adjacent said second end wall with a portion of said light bulb extending through said off-center opening, said light bulb being electrically connected to one of said batteries; (g) a conductive member having an elbow-shaped configuration with one leg being frictionally retained between the conductive surface of said other battery and its adjacent battery retaining member and with the other leg being in fixed contact with the conductive socket of said light bulb, and is further provided with an aperture in the leg adjacent the lamp socket adapted to rotatably receive and take up said socket, which bulb itself is provided with a spiralled ridge configuration to threadedly engage said aperture; and (h) a conductive switch member having one leg frictionally retained on said positive post of said other battery, said switch member including a second leg portion extending between said flexible side wall and said battery retaining member and terminating adjacent a cutout portion of said battery retaining member, exposing a conductive portion of the other of said batteries, whereby said switch member completes a circuit between said batteries and said light bulb when compression is applied to the flexible side wall.
Claim 3
Dependent Claim 31 words
A flashlight in accordance with claim one wherein the conductive leg contacting the one battery surface is provided with an arcuate surface to improve the electrical conductivity of its frictional retention.
Claim 4
Dependent Claim 54 words
A flashlight in accordance with claim one wherein there is provided a pair of stop members formed on said battery retaining member at the end thereof adjacent said second end wall, each stop member bearing on the end of a battery member for preventing movement of said battery members toward said second end wall.

References Cited (Backward Citations)

US4210953A Cited
US4122510A Cited
US4242724A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-04-17 1987-10-17 1988-04-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-04-17 1991-10-17 1992-04-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-04-17 1995-10-17 1996-04-17 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag