US3345507A - Dynamo operated pocket flashlight - Google Patents

Dynamo operated pocket flashlight Download PDF

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Publication number
US3345507A
US3345507A US448670A US44867065A US3345507A US 3345507 A US3345507 A US 3345507A US 448670 A US448670 A US 448670A US 44867065 A US44867065 A US 44867065A US 3345507 A US3345507 A US 3345507A
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US
United States
Prior art keywords
casing
dynamo
lever
flashlight
stop
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
US448670A
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English (en)
Inventor
Messinger Werner
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.)
Braun GmbH
Original Assignee
Braun GmbH
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 Braun GmbH filed Critical Braun GmbH
Application granted granted Critical
Publication of US3345507A publication Critical patent/US3345507A/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
    • F21L13/00—Electric lighting devices with built-in electric generators
    • F21L13/06—Electric lighting devices with built-in electric generators with mechanical drive, e.g. spring

Definitions

  • a stop means is mounted internally within a flashlight casing and limits motion of a dynamo actuator toward the casing, so that pinching of an operators hand is made impossible. During storage, the stop means locks an external handle of the actuator in a hollow of the casing surface to prevent snagging withclothing material.
  • the present invention relates to a dynamo-operated pocket flashlight with an operating lever which may be moved to and fro manually and which actuates the dynamo rotor either directly or by way of an energy source, for example a spring mechanism.
  • Flashlights of this type are constructed as a rule in such a manner that the operating lever can be pressed in until the handle strikes against the housing or case so that the given impulse which must neither exceed nor fall below specific limits of speed for an easy manipulation may be utilized to the fullest possible extent.
  • the operating lever in the known pocket flashlights is generally also adapted to be locked so that it will not be protruding when the flashlight is laid aside or placed in a pocket.
  • the primary object of the present invention is to obviate this drawback.
  • Another object of the invention is to provide as a characteristic feature thereof a stop member acting on the operating lever which may be disengaged at will and which prevents the operating lever from striking against the case during the operation of the flashlight.
  • Still another object of the present invention is to provide the stop member advantageously at the same time with means for locking the operating lever so that a separate locking mechanism therefor is not necessary.
  • Yet another object of the present invention is to simplify the operation of the pocket flashlight by employing the stop member as a slide continuously urged into the operating position thereof by means of a spring.
  • FIGURE 1 is a longitudinal cross-sectional view through a dynamo pocket flashlight being directly actuated by means of an operating lever
  • FIGURE 2 is a top plan view of an individual part thereof on an enlarged scale
  • FIGURE 3 is a sectional view thereof
  • FIGURE 4 is a block diagram showing the electricalv connections.
  • the bulb 2 Accommodated in a conventional manner in the case 1 of the pocket flashlight at one end face thereof are the bulb 2 with the reflector 3 and a transparent cover plate 4.
  • the bulb is fed or energized by a dynamo whose rotor 5 is rotatably positioned on a plate 6 being secured to the housing.
  • a lever 7 serves for driving or actuating the rotor; this lever extends linearly in the case and is provided with a handle 8 at the end thereof projecting from .thecase and formed as a toothed rack 9' inside of the case.
  • the electrical output of the dynamo is conventionally connected to the light bulb.
  • a stop member 16 is disposed on the side of the case which is opposite the handle, which member limits the stroke of the toothed rack 9, so that a certain space will remain between the handle and the case, as is apparent from the illustration in FIGURE 1.
  • any closer approach of the handle to the casing would result in a possibility of pinching an operators hand.
  • Approach closer than this certain spacing is referred to for claim-purposes as pinching approach. It is apparent that the exact size of the certain spacing depends on the particular geometrical conditions used for the casing and handle.
  • the stop member is provided as a slide extending to both sides of the case, and is continuously pulled or urged into the operating position thereof by means of a spring 17.
  • a grip member 18 serves for shifting the slide member.
  • an opening 19 is provided in the stop slide member through which the toothed rack extends when the handle is fully depressed and may be locked. As is apparent from FIGURE 3, the stop slide member engages for that purpose into a recess 20 of the toothed rack.
  • the slide member When starting the operation of the pocket flashlight the slide member is initially pressed downwardly (FIG- URE l) whereupon the operating lever is unlocked or released and driven outwardly by means of a spring (not shown).
  • the spring 17 of the slide member pulls the latter again in an upward direction into the position of detent or stop.
  • the flashlight is now ready for operation and the rotor of the dynamo may be driven or actuated by repeatedly pressing down the lever 7 by way of the toothed wheel gearing and the freewheeling pawl control mechanism.
  • the stop slide member is first pushed downwardly against the action of the spring 17 and the lever 7 is pressed inwardly until the toothed rack projects through the opening 19 and the slide memher is in a position to engage into the recess 20 of the toothed rack.
  • the lower locking edge of the opening engages spring-biasedly when the stop slide member is released.
  • a dynamo pocket flashlight comprising: a casing means; a dynamo means mounted within said casing means; means mounted within said casing means to utilize the electrical output of said dynamo means to produce light radiating from said casing means; a movable means movable relative to said casing and located partly outside of said casing means to transmit external mechanical motion to said dynamo means for the driving thereof, said movable means including a slidable means slidable into and out of said casing; a stop means mounted within said casing means to limit the extent to which said slidable means is slidable into said casing means to prevent the pinching approach of said movable means to said casing means; said stop means acting on said slidable means within said casing means.
  • a dynamo pocket flashlight as claimed in claim 1 said slidable means being an operating lever movable reciprocatingly into said casing means to drive the dynamo means; said movable means further including a handle on the outer end of said lever for pressing the lever inwardly of said casing, said lever being biased outwardly; said stop means stopping the inner end of said lever before said handle strikes the outside of said casing means; said stop means having means for locking said lever in the pressed-in position; said stop member being normally spring-biased into the operative position; said handle lying smoothly flush with said casing in the locked position of said lever and said stop means.
  • a dynamo pocket flashlight as claimed in claim 2 said casing means having a recessed portion; said handle fitting into said recessed portion in the locked position of said lever and said stop means.
  • a dynamo pocket flashlight as claimed in claim 2 said stop means having a pushing means manually operable externally of the casing means; said stop means having a locking edge; said lever being pressable inwardly past said locking edge when said stop means is pushed out of said operative position by manual operation of said pushing means; said lever having a recess; said edge engaging spring-biasedly in said recess, when said lever has been pressed past said edge and said pushing means is manually released, to lock said lever in the pressed-in position.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
US448670A 1964-04-29 1965-04-16 Dynamo operated pocket flashlight Expired - Lifetime US3345507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB57272U DE1903104U (de) 1964-04-29 1964-04-29 Dynamo-taschenlampe.

Publications (1)

Publication Number Publication Date
US3345507A true US3345507A (en) 1967-10-03

Family

ID=33166651

Family Applications (1)

Application Number Title Priority Date Filing Date
US448670A Expired - Lifetime US3345507A (en) 1964-04-29 1965-04-16 Dynamo operated pocket flashlight

Country Status (4)

Country Link
US (1) US3345507A (de)
AT (1) AT249172B (de)
DE (1) DE1903104U (de)
GB (1) GB1092037A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315301A (en) * 1978-10-16 1982-02-09 Jimena Carlos L Generator flashlight
US5808450A (en) * 1996-08-15 1998-09-15 Marathon Electric Manufacturing Corporation Special alternator assembly with an inherent ballast impedance characteristic for lighting systems
US6322233B1 (en) 1998-12-07 2001-11-27 Paul K. Brandt Emergency flashlight
US20070030671A1 (en) * 2005-08-08 2007-02-08 Rsga International, Inc. Renewable energy flashlight
RU2312447C1 (ru) * 2006-06-26 2007-12-10 Государственное образовательное учреждение высшего профессионального образования Уфимский государственный авиационный технический университет Автономный источник электрической энергии с ручным гидравлическим приводом
RU2312446C1 (ru) * 2006-06-26 2007-12-10 Государственное образовательное учреждение высшего профессионального образования Уфимский государственный авиационный технический университет Автономный источник электрической энергии с ручным пневматическим приводом
US7361074B1 (en) 2005-02-18 2008-04-22 Rapid Pro Manufacturing, Martin And Periman Partnership Rotating light toy
RU2563579C1 (ru) * 2014-02-12 2015-09-20 Олег Николаевич Гаршин Автономный источник питания с ручным приводом
RU208022U1 (ru) * 2021-07-21 2021-11-30 Общество с ограниченной ответственностью "ИнтерЭкоТехнологии" Светодиодный светильник

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324144A (en) * 1997-04-09 1998-10-14 Roy Hudson Dynamo torch
GB2329958A (en) * 1997-10-06 1999-04-07 Keith Carl Hitchmough Clockwork torch

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR543642A (fr) * 1921-11-17 1922-09-06 Perfectionnements aux lampes électro-mécaniques
US2247901A (en) * 1940-04-24 1941-07-01 George W Alexander Batteryless flashlight
US2424700A (en) * 1944-11-11 1947-07-29 Dayton Acme Co Generator light

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR543642A (fr) * 1921-11-17 1922-09-06 Perfectionnements aux lampes électro-mécaniques
US2247901A (en) * 1940-04-24 1941-07-01 George W Alexander Batteryless flashlight
US2424700A (en) * 1944-11-11 1947-07-29 Dayton Acme Co Generator light

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315301A (en) * 1978-10-16 1982-02-09 Jimena Carlos L Generator flashlight
US5808450A (en) * 1996-08-15 1998-09-15 Marathon Electric Manufacturing Corporation Special alternator assembly with an inherent ballast impedance characteristic for lighting systems
US6322233B1 (en) 1998-12-07 2001-11-27 Paul K. Brandt Emergency flashlight
US7361074B1 (en) 2005-02-18 2008-04-22 Rapid Pro Manufacturing, Martin And Periman Partnership Rotating light toy
US20070030671A1 (en) * 2005-08-08 2007-02-08 Rsga International, Inc. Renewable energy flashlight
US7232238B2 (en) 2005-08-08 2007-06-19 Rsga International, Inc. Renewable energy flashlight
US20070201223A1 (en) * 2005-08-08 2007-08-30 Rsga International, Inc. Renewable energy flashlight
US7404651B2 (en) 2005-08-08 2008-07-29 Rsga International, Inc. Renewable energy flashlight
RU2312447C1 (ru) * 2006-06-26 2007-12-10 Государственное образовательное учреждение высшего профессионального образования Уфимский государственный авиационный технический университет Автономный источник электрической энергии с ручным гидравлическим приводом
RU2312446C1 (ru) * 2006-06-26 2007-12-10 Государственное образовательное учреждение высшего профессионального образования Уфимский государственный авиационный технический университет Автономный источник электрической энергии с ручным пневматическим приводом
RU2563579C1 (ru) * 2014-02-12 2015-09-20 Олег Николаевич Гаршин Автономный источник питания с ручным приводом
RU208022U1 (ru) * 2021-07-21 2021-11-30 Общество с ограниченной ответственностью "ИнтерЭкоТехнологии" Светодиодный светильник

Also Published As

Publication number Publication date
DE1903104U (de) 1964-10-29
AT249172B (de) 1966-09-12
GB1092037A (en) 1967-11-22

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