US3758773A - Flashlight - Google Patents

Flashlight Download PDF

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Publication number
US3758773A
US3758773A US00290536A US3758773DA US3758773A US 3758773 A US3758773 A US 3758773A US 00290536 A US00290536 A US 00290536A US 3758773D A US3758773D A US 3758773DA US 3758773 A US3758773 A US 3758773A
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US
United States
Prior art keywords
blade
bulb
cover
contact
flat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00290536A
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English (en)
Inventor
G Nau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAFT Societe des Accumulateurs Fixes et de Traction SA
Original Assignee
SAFT Societe des Accumulateurs Fixes et de Traction SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SAFT Societe des Accumulateurs Fixes et de Traction SA filed Critical SAFT Societe des Accumulateurs Fixes et de Traction SA
Application granted granted Critical
Publication of US3758773A publication Critical patent/US3758773A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells

Definitions

  • ABSTRACT A flashlight including a bulb and an electric power source preferably in the form of a battery of seriesconnected cells within a casing having a cover, one terminal of the battery being in permanent electric connection with the center contact stud of the bulb of the flashlight viaa resilient blade welded or soldered to the metal can of one of the cells which can constitute said terminal of the battery.
  • the second terminal of the battery constituted by the center stud of another of the series-connected cells is connectable at will to the base of the bulb by deformation of a second resilient blade through the agency of a movable control means.
  • the second resilient blade is fastened securely and permanently to an inner surface of the cover so as to position and provide proper location of the two extremities relative to said cell stud and bulb base.
  • the invention relates to flashlights of the type comprising an electric power source such as a dry cell or an electric battery of series-connected cells and an electric bulb assembled in a common sealed housing emtion with the conductive base of the bulb and the other extremity of said second'blade isapplicable by movement at will of a control means into contact with the ing application,
  • the battery comprises a plurality of series-connected cells so disposed that the second tenninal of the battery against which an extremity of the second metal blade is caused to be applied for completion of the current circuit through the bulb is the center stud constituting the positive pole of one of the said cells.
  • the second blade is integral with asmall metal plate secured to a throat in the cover which supports the base of the bulb.
  • An object and feature of the present invention is to effect simplification of manufacturing and assembly operations in the production of flashlights and also to render it possible to eliminate need for detached parts such as the small plate of the aforesaid co-pending application.
  • a flashlight comprising a casing including a cover provided with a receptacle for a bulb, an electric power source such as a battery positioned within said casing,a first terminal of which is in permanent .electrical contact with the center stud of the bulb and including also an elastic and conductive blade that is in electric contact with the base of the bulb and an extremity of which under the effect of a movable control means may be'shifted into accurate reliable contact with the second terminal of the power source, and wherein further, fastening means are provided for maintaining the said-blade secured against a bearing surface within said casing situated in proximity to the said bulb receptacle.
  • the said fastening means constitutes an integral part of the said casing.
  • the said fastening means comprise at least one rivet-like element projecting from the said bearing surface through a hole provided in the blade and headed over in rivet-like manner over the surface of the blade opposite that which is applied against the said bearing surface to maintain the blade secured to said surface.
  • the said fastening means may comprise at least one rivet traversing the blade and secured to the cover portion of which the bearing surface is apart.
  • the said rivet may be replaced by a screw.
  • the bearing surface includes at least along one side an upstanding edge which is engaged by at least one edge of the blade to prevent rotation of the blade after its attachment on said bearing surface.
  • the said fastening means are provided by upstanding parallel edges at opposite sides of the bearing surface that subsequent to positioning of the blade or said surface are bent back or turned over .at least in part over the surface of the blade opposite that which has been applied against the .said bearing surface, thereby providing the said fastening means.
  • the casing comprises a container anda cover, the said bearing surface being provided in the cover.
  • FIG. 1 is a partial cross-sectional view of a flashlight embodying the invention
  • FIG. 2 is a partial cross-sectional view taken along line 2-'-2 of FIG. 1 showing only the blade and that part of the cover to which it is fastened, and
  • FIG. 3 is a view similar to that of FIG. 2 of a modified embodiment.
  • the flashlight comprises a container .1 of suitable plastic material surrounding three cylindrical cells 2, 3 and 4 electrically connected in series by wires W and W respectively in order to form a battery.
  • the usual center stud 5 of a bulb 6 is electrically connected to the metal can of the cell 2 via a springy metal blade 7 secured in electrical contact with said can, which latter serves as the negative terminal of the battery.
  • a cover 8 of plastic material similar to that of said container is mounted on and sealingly secured to the container 1 in order to provide the sealed flashlight casing.
  • This cover has a concave upper wall 9 which in its region ofmaximum depth has an opening 9.
  • An inwardly extending tubular throat 10 preferably integral with the wall 9 of the cover 8 is provided at the opening 9'.
  • the inner wall of this throat might be threaded to receive and support therein the conductive base 11 of the bulb 6.
  • the wall of throat l0 internally of the cover and below wall 9 has a longitudinally exand opens into it.
  • a pin-like projection 15 extends outwardly of flat surface 13. In the embodiment shown in FIG.2, this pin-like projection is integral with and of the same material as thickened wall portion 9" of cover 8. It may, however, be replaced by arivet or screw or other equivalent fastening members.
  • a second resilient blade 16 is provided for completing an electric circuit between the base 11 of the bulb and the second terminal of the battery which terminal as shown in FIG. 1 is stud 17 of cell 4.
  • This blade.16 is of springy conductive metal and provided in its length with a number of portions bent at different angles relative to each other. The blade is shown in FIG. 1 in solid line representing its off condition when no current flows and in dotted line representing its on condition when the electric circuit is complete and the bulb 6 is illuminated.
  • the extremity 21 of the blade 16 that lies in contact with the base 11 of the bulb includes a transverse ribbing 22 which projects through notch or slot 10' of throat 10 into engagement with conductive base 11 beportion 23 of blade 16 is admeasured so that when said portion is mounted on said flat surface it fits between ribs 14.
  • the pin-like projection 15 extending from surface 19 then projects through a hole 24 provided in the portion 23 of the blade and is headed in rivet-like fashion at 25 to secure the blade 16 in position on flat surface 13.
  • the headed pin-like projection 15 and ribs 14 then hold the blade 16 securely in position and against rotation with ribbing 22 in effective electrical contact with base 11.
  • the ribs 14a are folded over in rivet-like fashion at 14b to overliethe side edges of the flat portion 23a of the blade 16a to effect fastening of said blade 16a in position on flat surface 13a.
  • This arrangement eliminates the need for pin-like projection 15 and hole 24 required in the first embodiment described above.
  • the pin-like projection 15 can be replaced by a rivet or a screw.
  • the ribs 14 or 14a can be eliminated by the use of two spaced-apart pin-like projections 15 or a similar number of rivets or screws instead of said ribs.
  • the various portions of resilient metal blade 16 which are bent at'differingangles relative to each other include a portion 26 adjoining flat portion 23 which is bent upwardly relative to said portion 23.
  • a portion 27 adjoining the portion 26 is bent downwardly relative to portion 26.
  • the nose 19 of control member 19 rests on the uppermost surface of this portion 27 in the off position as seen in full line in FIG. 1.
  • a portion 28 directly adjoining the portion 27 is bent downwardly relative to portion 27.
  • a further bent portion 29 directly adjoins portion 28. Movement of control member 19 in the direction of arrow F- to its dotted line position causes nose 19' to slide overthe surface of portion 28 into engagement with the step-like surface provided by tween a pair of its. threads to provide a reliable and steady electrical contact with the base 11 and also to effect a locking of the bulb 6 in position in throat 10.
  • the blade 16 comprises adjacent its extremity 21' a flat portion 23 substantially perpendicular to the portion forming extremity 21.
  • the rear surface of flat portion 23 in assembly is in contact with the flat surface 13 of the thickened portion 9" of cover 8.
  • the width of portion 29 so that when control element 19 reaches its dotted line on position, the blade 16 will have been shifted from its full line position to the dotted line position as seen in FIG. lat which time the extremity 18 of said blade 16 will have been shifted into positive surface engagement and reliable and intimate contact with center stud 17 of 'cell 4 establishing the on condition and illumination of bulb 6 of the flashlight.
  • the successive bent portions 30 and 31 beyond portion 29 terminate in the extremity 18 whose flat surface provides large area for reliable contact with the surface of stud 17.
  • a bulb receiving tubular socket forming an integral part of said cover, a metallic member connected conductively to one terminal of said source and lying in electric contact with said center contact stud of said bulb, when the latter is mounted in said socket, a resilient metallic blade, a flat support surface portion for said blade on and within said cover adjacent to said socket, said socket having a notch in its length exposing a portion of said base and said flat surface portion lying adjacent to said notch, said resilient blade having an extremity projecting through said notch into electrical contact with the said portion of said base for maintaining said bulb securely in said socket, and also having a portion adjoining said extremity mounted on said flat surface portion, fastening means at said flat surface portion for securing said blade to said support means and preventing rotation thereof, said resilient blade havingits other extremity overlying but normally out of contact with a second terminal of said source, said other extremity being movable in opposition to the resiliency bias of said blade into and out of circuit-closing condition with said second terminal of said source, and movable
  • said fastening means comprises means projecting from said flat portion and engaging said blade.
  • the means projecting from said flat portion being a headed pin-like member.
  • the means projecting from said flat portion being ribs extending from said flat portion.
  • the means projecting from said flat portion being turned-over ribs.
  • said flat portion including a rib along an edge thereof in contact with at least one side of said blade.
  • said support surface portion being integral with said cover and including a thickened wall portion on which said flat surface portion is provided.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Battery Mounting, Suspending (AREA)
US00290536A 1971-10-12 1972-09-20 Flashlight Expired - Lifetime US3758773A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7136667A FR2156974A5 (enrdf_load_stackoverflow) 1971-10-12 1971-10-12

Publications (1)

Publication Number Publication Date
US3758773A true US3758773A (en) 1973-09-11

Family

ID=9084254

Family Applications (1)

Application Number Title Priority Date Filing Date
US00290536A Expired - Lifetime US3758773A (en) 1971-10-12 1972-09-20 Flashlight

Country Status (2)

Country Link
US (1) US3758773A (enrdf_load_stackoverflow)
FR (1) FR2156974A5 (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122510A (en) * 1976-12-01 1978-10-24 S. Harry Fazzina Flashlight
US4210953A (en) * 1973-12-13 1980-07-01 Stone Wilfred S Self-illuminated case
USD275423S (en) 1982-02-02 1984-09-04 Mattel, Inc. Combined automatic emergency light and audible alarm
US4783725A (en) * 1987-08-24 1988-11-08 Rayovac Flashlight with space efficient reflector
US4926300A (en) * 1989-03-13 1990-05-15 Key Industries, Inc. Disposable flashlight with improved activator field of the invention
USD317662S (en) 1989-10-04 1991-06-18 Fulton Industries, Inc. Combined flashlight casing head and reflector
USD325099S (en) 1990-03-15 1992-03-31 Fredlund Bradley A Flashlight
USD336531S (en) 1991-07-31 1993-06-15 Forexim (Hong Kong) Limited Pocket lamp
US5842777A (en) * 1995-08-04 1998-12-01 Mcdermott; Kevin Flashlight
US6070990A (en) * 1997-05-02 2000-06-06 Eveready Battery Company, Inc. Card light having a cover being an adhesively attached label
US20070109776A1 (en) * 2005-10-07 2007-05-17 Scott Hilt Flashlight
US20100046211A1 (en) * 2008-08-20 2010-02-25 Eveready Battery Company, Inc. Lighting Device Configured to Operate with Different Batteries
CN103216734A (zh) * 2013-03-21 2013-07-24 宁波腾隆户外用品有限公司 一种头灯

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230225Y2 (enrdf_load_stackoverflow) * 1974-12-11 1977-07-09

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2041843A (en) * 1933-04-21 1936-05-26 Egon Singer Electric pocket lamp
US2249692A (en) * 1939-03-18 1941-07-15 Gelardin Albert Pocket flashlight
US2610262A (en) * 1949-02-23 1952-09-09 Orville A Cunningham Telephone light mounting
US2618737A (en) * 1947-10-10 1952-11-18 Olin Ind Inc Flat casing electric hand lamp and switch therefor
US2697297A (en) * 1952-01-11 1954-12-21 Newberg Albert Toy combination cigarette case and lighter
US2727135A (en) * 1953-04-21 1955-12-13 Michael S Wolk Illuminated viewing device
US3229976A (en) * 1963-03-25 1966-01-18 Jr Walter L Allen Illuminated beach balls
US3443084A (en) * 1965-12-15 1969-05-06 Accumulateurs Fixes Disposable flashlight

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2041843A (en) * 1933-04-21 1936-05-26 Egon Singer Electric pocket lamp
US2249692A (en) * 1939-03-18 1941-07-15 Gelardin Albert Pocket flashlight
US2618737A (en) * 1947-10-10 1952-11-18 Olin Ind Inc Flat casing electric hand lamp and switch therefor
US2610262A (en) * 1949-02-23 1952-09-09 Orville A Cunningham Telephone light mounting
US2697297A (en) * 1952-01-11 1954-12-21 Newberg Albert Toy combination cigarette case and lighter
US2727135A (en) * 1953-04-21 1955-12-13 Michael S Wolk Illuminated viewing device
US3229976A (en) * 1963-03-25 1966-01-18 Jr Walter L Allen Illuminated beach balls
US3443084A (en) * 1965-12-15 1969-05-06 Accumulateurs Fixes Disposable flashlight

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210953A (en) * 1973-12-13 1980-07-01 Stone Wilfred S Self-illuminated case
US4122510A (en) * 1976-12-01 1978-10-24 S. Harry Fazzina Flashlight
USD275423S (en) 1982-02-02 1984-09-04 Mattel, Inc. Combined automatic emergency light and audible alarm
US4783725A (en) * 1987-08-24 1988-11-08 Rayovac Flashlight with space efficient reflector
US4926300A (en) * 1989-03-13 1990-05-15 Key Industries, Inc. Disposable flashlight with improved activator field of the invention
USD317662S (en) 1989-10-04 1991-06-18 Fulton Industries, Inc. Combined flashlight casing head and reflector
USD325099S (en) 1990-03-15 1992-03-31 Fredlund Bradley A Flashlight
USD336531S (en) 1991-07-31 1993-06-15 Forexim (Hong Kong) Limited Pocket lamp
US5842777A (en) * 1995-08-04 1998-12-01 Mcdermott; Kevin Flashlight
US6070990A (en) * 1997-05-02 2000-06-06 Eveready Battery Company, Inc. Card light having a cover being an adhesively attached label
US20070109776A1 (en) * 2005-10-07 2007-05-17 Scott Hilt Flashlight
US7705542B2 (en) 2005-10-07 2010-04-27 Black & Decker Inc. Flashlight
US20100118523A1 (en) * 2005-10-07 2010-05-13 Black & Decker Inc. Flashlight
US20100182780A1 (en) * 2005-10-07 2010-07-22 Black & Decker Inc. Flashlight
US8148917B2 (en) 2005-10-07 2012-04-03 Black & Decker Inc. Flashlight
US20100046211A1 (en) * 2008-08-20 2010-02-25 Eveready Battery Company, Inc. Lighting Device Configured to Operate with Different Batteries
US7850330B2 (en) * 2008-08-20 2010-12-14 Eveready Battery Co., Inc. Lighting device configured to operate with different batteries
US20110075407A1 (en) * 2008-08-20 2011-03-31 Eveready Battery Company, Inc. Lighting Device Configured to Operate with Different Batteries
US7959317B2 (en) 2008-08-20 2011-06-14 Eveready Battery Company, Inc. Lighting device configured to operate with different batteries
CN103216734A (zh) * 2013-03-21 2013-07-24 宁波腾隆户外用品有限公司 一种头灯
CN103216734B (zh) * 2013-03-21 2015-04-15 宁波腾隆户外用品有限公司 一种头灯

Also Published As

Publication number Publication date
FR2156974A5 (enrdf_load_stackoverflow) 1973-06-01

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