US3711703A - Flashlight construction - Google Patents

Flashlight construction Download PDF

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Publication number
US3711703A
US3711703A US00089907A US3711703DA US3711703A US 3711703 A US3711703 A US 3711703A US 00089907 A US00089907 A US 00089907A US 3711703D A US3711703D A US 3711703DA US 3711703 A US3711703 A US 3711703A
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United States
Prior art keywords
bulb
housing
opening
switch
channelway
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Expired - Lifetime
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US00089907A
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English (en)
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J Bacevius
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L2/00—Systems of electric lighting devices

Definitions

  • the light construction Field of Search-240N056, 10-65, 10-61 comprises a housing for containing a source of battery 240/106 power and a light bulb operatively connected in electrical circuit with the battery source by a single con [56] References Cited ducting member having a portion thereof extending externally of the housing wherein the conducting UNITED STATES PATENTS members function to normally urge the battery source 2,166,282 7/1939 Benjafield ..240/10.68 in r al nta t with the bulb and to maintain the 2,435,689 2/1948 McCabe ....240/10.68 bulb in position within the housing.
  • the conducting 2,490,830 12/1949 Norton ....240/10.68 member also functions as a switch means independent 9 6 2/1 9 Na h n ct l-m "0240/1068 of any actuator for energizing and de-energizing the Muller circuit to the bulb
  • the conducting member is 2,651,710 9/1953 Clark ..240/10.6 formed to define a holding clip for the flashlight with 3,079,492 2/1963 Bolmger ..240/l0.66 the exposed portion being usable as a decorative ture.
  • Another object of this invention is to provide for an inexpensive flashlight construction which renders it a feasibly expendible or economical throw-away unit.
  • Another object is to provide a flashlight construction that is relatively inexpensive to fabricate, small and light in weight and construction, and positive in operation.
  • Another object is to provide a pen light type construction in which the circuit between the battery source and the bulb is made by a single conducting member.
  • Another object is to provide in a flashlight construction a circuit forming member which functions for maintaining electrical contact between the battery source and the light bulb and for switching the current to the light bulb on or off.
  • a flashlight construction comprising a housing preferably defined by a pair of complementary housing sections.
  • the housing sections are adapted to be interfitted together to define a complete housing enclosure for containing a battery source of electrical power and a light bulb in electrical contact with an electrode of the battery source.
  • a bulb opening is formed in one end of the housing which cooperates with an internally formed bulb seat for retaining the bulb in position between the electrode of the battery source and the bulb opening.
  • a switch opening Formed in the housing adjacent the light bulb is a switch opening.
  • An electrical conducting member is extended along side of the housing to complete the circuit between the other electrode of the battery source of power and the light bulb.
  • the conducting member is formed with one end bent to extend into the housing to form a spring contact for engaging in electrical contact with one electrode of the battery means.
  • the arrangement is such that the bent end portion normally biases the battery means to maintain the other electrode of the battery means in electrical contact with the bulb and to maintain the light bulb seated firmly against the bulb opening.
  • the other end of the conducting member is extended over the switch opening and defines a switch means which is free to flex into and out of electrical contact with the base portion of the bulb for ener gizing and deenergizing the circuit to the bulb.
  • the conducting member adjacent the switch end is also reversely bent to form a holding or spring clip for supporting the flashlight in ones pocket.
  • a feature of this invention resides in the provision of a flashlight construction in which a single conducting member is utilized to complete the circuit between the battery and bulb and to function as the switch in energizing and de-energizing the circuit to the light bulb.
  • Another feature of this invention resides in the flashlight construction having a minimum number of prefabricated components which can be readily assembled in a simple and expedient manner to form an integrally constructed unit which, if desired, can be utilized as a readily disposable or expendible unit.
  • a flashlight construction having a unitary conducting member constructed and arranged to function as a means for exerting a bias on the battery means and light bulb for maintaining them in positive electrical contact and having one end which is free to flex to form a switching means for energizing and de-energizing the circuit to the bulb.
  • Another feature of this invention resides in the provision of a flashlight construction having a conducting member constructed and arranged to define a spring clip for supporting the flashlight construction in ones pocket.
  • FIG. 1 is a longitudinal sectional side view of the flashlight construction embodying the invention.
  • FIG. 2 is a sectional view taken along line 2-2 on FIG. 1.
  • FIG. 3 is a sectional view taken along line 3-3 on FIG. 1.
  • FIG. 4 is a detailed side view of the conducting member utilized in the assembly of the light construction of FIG. 1, having portions broken away.
  • FIG. 5 is a detailed plan view of the conducting member of FIG. 4.
  • FIG. 6 is a detailed exploded view of the housing construction for the light arrangement of FIG. 1.
  • FIG. 7 is a perspective view of the front end portion of a housing section to show the bulb lug.
  • FIG. 1 illustrates a flashlight 10 embodying the present invention.
  • the flashlight construction 10 comprises a housing 11 which is preferably formed by a pair of complementary housing sections 12 and 13.
  • Each housing section 12 and 13 is defined by a side wall 12A, 13A, and a connected bottom wall segment 12B and 13B and top wall segment 12C and 13C.
  • the respective top and bottom wall segments 12B, 12C and 13B, 13C of the respective housing sections 12 and 13 are provided with complementary mating longitudinal extending edge portions 12D, 13D which are adapted to interflt or interlock in the assembled position of the respective housing sections as best noted in FIGS. 2 and 3.
  • a rear end wall segment 12E and 13E is included in the respective complementary housing sections 12 and 13, which when assembled define a rear or end wall of the housing unit.
  • the upper wall segments 12C, 13C of the housing adjacent the rear end of the housing define a slot or opening 14 for receiving the bent end portion 15A of a conducting member 15, as will be hereinafter described.
  • each of the respective sections Adjacent the front end of the housing unit 11 the upper wall segments 12C, 13C of the respective housing sections 12, 13 are foreshortened to define a switch opening 16 in the assembled position.
  • the front end of the respective housing sections is also provided with an arcuate opening 17A which in the assembled position of the housing unit defines a bulb opening 17.
  • each of the respective sections is provided with a partition 18, 18 formed with an arcuate cut-out, which in the assembled position of the housing defines a bulb saddle seat 19 having an opened top disposed below the switch opening 16.
  • the bulb saddle seat 19 thus defined is disposed in axial alignment with the bulb opening 17 as best seen in FIG. 1.
  • one of the housing sections is provided with a depending lug 12F which is spaced forward of the partition 18, 18 and which lug functions to complement the bulb seat 19 to maintain the alignment of the bulb withinthe housing.
  • complementary aligning pins 20 and pin seats 21 may be provided on the respective housing sections 12, 13 to facilitate the alignment of the respective housing sections during the assembly thereof. Consequently in the assembled position of the housing 11, the portion defined between the rear or end wall 12E, 13E and the bulb seat 19 defines the compartment 22 in which a source of electrical energy, as for example, a battery means 23, may be housed therein.
  • a source of electrical energy as for example, a battery means 23
  • the housing 11 is defined as an elongated member in a shape simulating a pen light type housing in which one or more pen light type batteries or dry cells 23, as for example, A or AA batteries may be positioned.
  • a suitable light bulb 24 is disposed within the housing 11.
  • the bulb 24 is adapted to be loosely positioned between the bulb seat 19 and the bulb opening 17, the base of the bulb being substantially tangent to lug 12F.
  • the head 24A of the bulb is generally defined with a slight taper so that in the assembled position the head 24A of the bulb 24 is normally urged or biased in the direction outwardly of the bulb opening 17. In thismanner the tapered portion of the-bulb head 24A is firmly seated against the bulb opening l7. Consequently as seen in FIG. 1, the bulb is firmly wedged or positioned between the positive electrode 23A of battery 23 and the bulb opening 17.
  • Lug 12F andbulb seat 19 cooperate to maintain the bulb properly seated within the housing.
  • the conducting means 15 is constructed to define a spring contact 15A at one end.
  • the conducting means 15 comprises an elongated member formed of an electrical conducting material to extend longitudinally along the housing 11. Referring to FIGS. 1, 2 and 3, the respective housing sections adjacent the upper wall segment 12C, 13C are each provided with opposed longitudinally extending grooves 27, 28 which in the assembled position define a channelway 29 for retaining therein the intermediate portion of the conducting member 15.
  • the rear end 15A of the conducting member 15 is bent so as to extend through the opening or slot 14 adjacent the rear portion of the housing to define a spring contact for maintaining a spring bias and electrical contact with the negative electrode of the battery means 23.
  • the other end l5B'of the conducting means 15 is arranged to extend over the switch opening 16 and is free to flex into and out of electrical contact with the base contact portion 248 of the bulb 24. Accordingly, the arrangement is such that the conducting member 15 defines the circuit forming means for connecting the bulb into and out of electrical circuit with the battery means 23.
  • the switch end 158 of the conducting member 15 is reversely bent to define a spring clip or holder 30 by which the pen light construction may be supported in ones pocket.
  • the arrangement is such that when the light construction is supported on one s pocket by use of the clip holder 30, the arrangement is such that the light will not be inadvertently energized. Consequently the batteries will not be inadvertently run down. Also the arrangement is such that an operator, to energize the light bulb needs only to effect a depressing action on the switch end portion 158 of the conducting member 15 to make contact between the conducting member and the base contact 243 of the light bulb 24.
  • the housing sections 12 and 13 of the construction described are preferably formed of a dielectric material, as for example, a plastic or the like. Consequently the upper wall segments 12C, 13C of the complementary member 12, 13 extending longitudinally of the housing function to electrically insulate the intermediate portion of the conducting member from the negative electrodes or casings of the battery means 23. Consequently only the end spring contact portion 15A of the conductor means 15 is arranged to effect electrical contact with the battery means, and the switch end portion 158 to contact the bulb contact 248 when depressed.
  • the assembly of the entire unit 10 can be readily attained simply by positioning the battery source 23 and the bulb 24 in position between the respective housing sections before the mating thereof.
  • the conductor member 15 can be readily assembled to the respective housing sections 12,.13 by positioning the intermediate portion of the conducting member between the complementary grooved portions 27, 28 of the housing sections during the assembly thereof.
  • the conducting member 15 can be press fitted into the channelway 29 defined by the complementary grooves 27, 28 after assembly of the housing sections.
  • the conducting member 15 is firmly retained to the housing within the channelway and that it functions both to maintain the biasing force between the battery means 23A and the light bulb 24 and to securely position the light bulb 24 in seating position between the bulb opening 17 and the central electrode 23A of the battery means. Also that the unitary conducting member functions as a switching means for controlling the current flow to the light bulb 24 and also as a spring clip holder for securing the light construction in ones pocket.
  • the channelway 29 is disposed so as to extend externally of the housing 11. Consequently the conducting member for the most part extends externally along a substantial portion of the housing. Disposing the conducting member externally of the housing achieves a number of important advantages. With the construction described, assembly is greatly expedited in that the conducting member can be applied after the assembly of the housing. This was not possible by earlier known construction. Also the exposed portion of the conducting member may be used as a decorative feature of the light construction for added sales appeal. Because the conducting member is generally made of metal, attractive styling may be imparted to the light construction by externally displaying the conducting member 15, as seen in FIGS. 1 and 2.
  • the construction illustrated includes the further feature that the arrangement is such that the light will not be inadvertently energized in the event it is carried in a purse or other like place.
  • This is attained by the inclusion of a protrusion or hump 12G, 13G formed on the respective housing sections 12 and 13 adjacent the switch opening 16.
  • the hump 12G, 13G projects upwardly to substantially the height of the switch end or reverse end of the switch member 158.
  • the flashlight construction constitutes a minimum of component parts which can be readily assembled in a simple and expedient manner, and which complementary housing sections can be readily sealed, as by fusing, welding, bonding, cementing or the like in the assembled position, to form an integral readily expendible and/or disposable unit which may be readily discarded after the batteries have been totally run down.
  • the housing section may be formed so as to be rendered readily separable so that a user could replace the battery if so desired.
  • a flashlight comprising:
  • means defining a housing adapted to contain a battery source of electrical energy
  • said housing having a bulb opening in one end, a
  • said housing having means defining a channelway extending along the exterior portion thereof between said switch opening and said slotted opening,
  • a unitary conducting member disposed in said channelway and retained therein by said grooves, and said conducting member having an end portion defining a spring contact extending into said slotted opening and into said housing for urging the battery source in electrical contact with said bulb, and said contact member having its other end defining a switch for making and breaking the circuit to said bulb,
  • said switch end portion being reversely bent to define a clip holder for said flashlight
  • said guard means projecting outwardly of said housing to a distance at least equal to the radial extent of said reverse bent portion defining said clip holder to prohibit electrical contact of said switch end portion with said bulb when said switch end portion is disposed against a flat surface.
  • said bulb being loosely retained in said saddle seat in axial alignment with said bulb opening.
  • a readily disposable multiple cell pen light type flashlight comprising:
  • an elongated housing defined by a pair of complementary housing sections having a forward end and a rear end,
  • said bulb seat means including complementary partitions connected to the respective housing section to extend transversely thereof, said partitions having an open top portions, and a depending lug connected .to one of said housing sections and extending laterally, said lug being disposed between said partitions and said bulb opening, and adapted to overly a bulb,
  • a bulb having a base portion adapted to be retained in alignment by the coaction of said lug and said bulb seat means with said bulb opening between said lug and said partitions,
  • said housing having a switch opening formed therein, said switch opening overlying the open top portion of said bulb seat means and the base portion of the bulb retained in said bulb seat means,
  • battery means including at least two independent batteries tandemly disposed in said housing,
  • one of said battery means having an electrode adapted to engage said bulb in electrical contact
  • said channelway being formed by opposed complementary grooves for positively securing said conducting members in said channel-way to said housing sections
  • said conducting member having a bent end portion adapted to extend through said slotted opening and into said housing to engage in electrical contact with the opposite electrode of said other battery means
  • said bent end normally exerting a spring bias on said batteries urging them into electrical contact with each other and with said bulb, and for retaining said bulb in seating position against said bulb opening,
  • said member having its other end extending over said switch opening to define a switch end free to flex into electrical contact with the base portion of the bulb for making and breaking the current thereto,
  • said switch end being reversely folded to define a spring clip for supporting the flashlight
  • guard means defined as a hump formed on the respective housing section adjacent the front end thereof to extend substantially to the radial extent of the reverse switch end of said conducting member to define a guard for prohibiting electrical contact of said switch with said bulb when said switch end is disposed against a plane surface.
  • a flashlight construction comprising:
  • an elongated housing having circumscribing side walls, and front end wall and a rear end wall, means defining a bulb opening in said front wall,
  • said strip having a bent biasing end portion adapted to extend into said slot and into said housing to engage in electrical contact with an electrode of said battery means and to exert a biasing force thereon to maintain said battery means in electrical contact with said bulb and said bulb in position against said bulb opening,
  • said strip having its other end portion extending over said switch opening and free to flex into and out of electrical contact with said bulb means
  • said spring clip having its free end bent to extend out-' wardly from said channewlay
  • a guard means defined as a hump formed on said housing on the side wall containing said switch opening
  • said hump being disposed between the front end of said housing and said switch opening

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Battery Mounting, Suspending (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Secondary Cells (AREA)
US00089907A 1970-11-16 1970-11-16 Flashlight construction Expired - Lifetime US3711703A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8990770A 1970-11-16 1970-11-16

Publications (1)

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US3711703A true US3711703A (en) 1973-01-16

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US00089907A Expired - Lifetime US3711703A (en) 1970-11-16 1970-11-16 Flashlight construction

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US (1) US3711703A (enrdf_load_html_response)
CA (1) CA960624A (enrdf_load_html_response)
CH (1) CH559336A5 (enrdf_load_html_response)
DE (1) DE2156694A1 (enrdf_load_html_response)
FR (1) FR2114714A5 (enrdf_load_html_response)
GB (1) GB1372890A (enrdf_load_html_response)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215389A (en) * 1977-12-12 1980-07-29 Colangelo Fernando M Battery operated light
US4347553A (en) * 1981-10-26 1982-08-31 Saron John R Flexible light with protective cap
US4442478A (en) * 1982-02-19 1984-04-10 Stansbury Benjamin H Automatically actuated enclosure light
US4631646A (en) * 1985-02-22 1986-12-23 Trautz & Co. Inh. Hans Spindler Discardable flashlight
USD295562S (en) 1985-09-23 1988-05-03 Fazzina S Harry Flashlight
US4768138A (en) * 1987-08-05 1988-08-30 The Cloverline, Inc. Flashlight
US5684378A (en) * 1995-01-12 1997-11-04 Eveready Battery Company Rechargeable flashlight assembly
US5722764A (en) * 1996-10-31 1998-03-03 Jou; Wen San Adjustable flashlight
US5806961A (en) * 1996-04-12 1998-09-15 Eveready Battery Company, Inc. Rechargeable flashlight assembly with nightlight
US6547415B1 (en) * 2000-06-29 2003-04-15 Surefire, Llc Clip-type object attachment systems
US20030174497A1 (en) * 2002-01-28 2003-09-18 Waldemar Witte Flashlight
US20030202345A1 (en) * 2002-04-26 2003-10-30 Surefire, Llc Flashlight with securement capability
US6712485B2 (en) 2000-06-29 2004-03-30 Surefire, Llc Flashlight securement systems
US20060146545A1 (en) * 2005-01-06 2006-07-06 Surefire, Llc Object-attaching clip
USD563002S1 (en) 2007-03-12 2008-02-26 Irizarry Erik J Carrying bag light assembly
USD574528S1 (en) 2002-07-11 2008-08-05 Witte + Sutor Gmbh Pocket lamp
US20110120632A1 (en) * 2008-06-26 2011-05-26 Crawford John D Light device having thermoset composite housing and electrical interconnect

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1014419Y (es) * 1990-06-18 1991-10-01 Hijos De Lopez Vilagrasa, S.A. Linterna.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166282A (en) * 1936-06-03 1939-07-18 Benjamin Webster Electric lamp
US2435689A (en) * 1947-04-01 1948-02-10 Kessler Milton Flashlight
US2490830A (en) * 1945-11-01 1949-12-13 Frank W Norton Flashlight
US2491686A (en) * 1949-01-08 1949-12-20 Bantam Lite Inc Pen-shaped pocket flashlight
US2600418A (en) * 1949-03-25 1952-06-17 Ferdinand H Muller Flashlight comprising permanently assembled lamp, cell, housing, and switch structure
US2651710A (en) * 1950-02-20 1953-09-08 Herbert G Clark Battery operated lamp having anchoring means to position the lamp and hold the switch closed
US3079492A (en) * 1958-09-23 1963-02-26 Bolinger George Noel Flashlight

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166282A (en) * 1936-06-03 1939-07-18 Benjamin Webster Electric lamp
US2490830A (en) * 1945-11-01 1949-12-13 Frank W Norton Flashlight
US2435689A (en) * 1947-04-01 1948-02-10 Kessler Milton Flashlight
US2491686A (en) * 1949-01-08 1949-12-20 Bantam Lite Inc Pen-shaped pocket flashlight
US2600418A (en) * 1949-03-25 1952-06-17 Ferdinand H Muller Flashlight comprising permanently assembled lamp, cell, housing, and switch structure
US2651710A (en) * 1950-02-20 1953-09-08 Herbert G Clark Battery operated lamp having anchoring means to position the lamp and hold the switch closed
US3079492A (en) * 1958-09-23 1963-02-26 Bolinger George Noel Flashlight

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Publication Modern Plastics, April 1952, Page 102 *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215389A (en) * 1977-12-12 1980-07-29 Colangelo Fernando M Battery operated light
US4347553A (en) * 1981-10-26 1982-08-31 Saron John R Flexible light with protective cap
US4442478A (en) * 1982-02-19 1984-04-10 Stansbury Benjamin H Automatically actuated enclosure light
US4631646A (en) * 1985-02-22 1986-12-23 Trautz & Co. Inh. Hans Spindler Discardable flashlight
USD295562S (en) 1985-09-23 1988-05-03 Fazzina S Harry Flashlight
US4768138A (en) * 1987-08-05 1988-08-30 The Cloverline, Inc. Flashlight
US5684378A (en) * 1995-01-12 1997-11-04 Eveready Battery Company Rechargeable flashlight assembly
US5806961A (en) * 1996-04-12 1998-09-15 Eveready Battery Company, Inc. Rechargeable flashlight assembly with nightlight
US5722764A (en) * 1996-10-31 1998-03-03 Jou; Wen San Adjustable flashlight
US6712485B2 (en) 2000-06-29 2004-03-30 Surefire, Llc Flashlight securement systems
US6547415B1 (en) * 2000-06-29 2003-04-15 Surefire, Llc Clip-type object attachment systems
US20030174497A1 (en) * 2002-01-28 2003-09-18 Waldemar Witte Flashlight
US6805461B2 (en) * 2002-01-28 2004-10-19 Witte + Sutor Gmbh Flashlight
US20030202345A1 (en) * 2002-04-26 2003-10-30 Surefire, Llc Flashlight with securement capability
US6994449B2 (en) 2002-04-26 2006-02-07 Surefire, Llc Flashlight with securement capability
USD574528S1 (en) 2002-07-11 2008-08-05 Witte + Sutor Gmbh Pocket lamp
US20060146545A1 (en) * 2005-01-06 2006-07-06 Surefire, Llc Object-attaching clip
US7278764B2 (en) 2005-01-06 2007-10-09 Surefire, Llc Object-attaching clip
USD563002S1 (en) 2007-03-12 2008-02-26 Irizarry Erik J Carrying bag light assembly
US20110120632A1 (en) * 2008-06-26 2011-05-26 Crawford John D Light device having thermoset composite housing and electrical interconnect
US8382312B2 (en) * 2008-06-26 2013-02-26 Eveready Battery Company, Inc. Method of manufacturing a housing for a light device

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CH559336A5 (enrdf_load_html_response) 1975-02-28
GB1372890A (en) 1974-11-06
FR2114714A5 (enrdf_load_html_response) 1972-06-30
DE2156694A1 (de) 1972-07-06
CA960624A (en) 1975-01-07

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