US3576383A - Piezoelectric ignition mechanism - Google Patents

Piezoelectric ignition mechanism Download PDF

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Publication number
US3576383A
US3576383A US846043A US3576383DA US3576383A US 3576383 A US3576383 A US 3576383A US 846043 A US846043 A US 846043A US 3576383D A US3576383D A US 3576383DA US 3576383 A US3576383 A US 3576383A
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United States
Prior art keywords
crystal
creating
further characterized
electrical discharge
housing
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Expired - Lifetime
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US846043A
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English (en)
Inventor
Douglas S Fuller
Hugh F Lang
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Ransen Corp
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Ransen Corp
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Assigned to NIHON SIBER HEGNER, K.K. reassignment NIHON SIBER HEGNER, K.K. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RONSON CORPORATION A CORP OF NJ
Assigned to SECURITY PACIFIC BUSINESS CREDIT INC.,, Lazere Financial Corporation reassignment SECURITY PACIFIC BUSINESS CREDIT INC., SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RONSON CORPORATION
Assigned to FOOTHILL CAPITAL CORPORATION, A CORP. OF CA reassignment FOOTHILL CAPITAL CORPORATION, A CORP. OF CA SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RONSON CORPORATION
Anticipated expiration legal-status Critical
Assigned to RONSON CORPORATION reassignment RONSON CORPORATION RELEASE OF SECURITY INTEREST IN PATENTS Assignors: WELLS FARGO FOOTHILL, INC.
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/183—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using impacting bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q2/00—Lighters containing fuel, e.g. for cigarettes
    • F23Q2/28—Lighters characterised by electrical ignition of the fuel
    • F23Q2/285—Lighters characterised by electrical ignition of the fuel with spark ignition
    • F23Q2/287—Lighters characterised by electrical ignition of the fuel with spark ignition piezoelectric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/002—Igniters using electrically-produced sparks using piezoelectric elements

Definitions

  • a spark By applying an impact force to a crystal, a spark can be made to jump a gap between two electrodes which are connected across the faces of the crystal by leads. Thus, one electrode is at a negative and the other electrode is at a positive potential.
  • a gas such as butane, is timed to pass between the electrodes when the piezoelectric crystal is struck.
  • the spark jumps the gap between the electrodes it ignites the hutane gas, and the issuing flame can be used to light a cigarette or fire a combustible mixture in a gas cylinder.
  • This invention has greatly improved the prior art piezoelectric devices by utilizing an impact mechanism which permits a series of sparks to be produced across the electrode gap with only one impact.
  • the series of sparks greatly increases the chances of successfully igniting the gas issuing between the electrodes.
  • the piezoelectric crystal is supported in a mounting which is so constructed and proportioned that it will reverberate when the crystal is struck.
  • the crystal is struck in such a manner that the timing of the reverberations in the mounting will be related to those in the crystal so as to induce a series of strong voltage oscillations whereby to extend the time during which current flows between the electrodes forming a spark gap; thereby, providing more reliable ignition, because the probability that ignition will occur has been increased.
  • FIG. 1 is a side view showing parts in section
  • FIG. 2 is an end view showing parts in section
  • FIG. 3 is a side view showing the details of the cartridge impact mechanism
  • FIG. 4 is an end view showing the details of the cartridge impact mechanism
  • FIG. 4a is a detail showing the buffer mechanism
  • FIG. 5 is a side view with a portion cut away showing the impact mechanism in actuated condition
  • FIG. 6 is an end view with parts cut away showing the impact mechanism in actuated condition
  • FIG. 7 is a modification of the device shown in FIG. 1;
  • FIG. 8 is a perspective of an end plate.
  • the lighter shown comprises a sheath 11 which fits over and retains in operative position the working components of the lighter.
  • a fuel reservoir 12 is mounted within the confines of mounted within the socket 14.
  • the inlet valve can be any I known inlet valve, for example, the valve shown in US. Pat. No. 3,085,601 which issued on Apr. 16, I963.
  • a flange 16 having upstanding walls 17 thereon is formed outwardly of the fuel reservoir 12 to form a receiving means for structure to be fully disclosed hereinafter.
  • a fingerpiece 18 is attached to a support 19 having depending legs 20 thereon.
  • the depending legs 20 are axially aligned above a lever 21 which has one end fixed to the movable stern 13a on the burner valve.
  • the lever has a finger 22 thereon which functions as a fulcrum in which the finger 22 rests on the top wall of the fuel reservoir 12.
  • the burner valve is of the type having a movable stem 13a although any other suitable valve can be used. When the stem 13a is raised the valve is opened and gas flows. The stem 13a is held in closed position by a spring (not shown) mounted within the valve housing.
  • the fingerpiece I8 is depressed and the depending leg 20 contacts the end of the lever 21 which is rotated about the fulcrum 22. Since the end of the lever is attached to the stem 13a of the burner valve, the stem is lifted and fuel contained in the reservoir 12 can flow to the atmosphere.
  • the fingerpiece 18 also functions to actuate the ignition mechanism 23. This is accomplished by fixing a housing 24 to the fingerpiece 18.
  • the housing is preferably tubular in construction, however, any desired shape can be used.
  • the housing 24 has a coiled spring 25 attached therein which can be compressed within the housing 24.
  • the support 19 has notches 19a formed therein for the reception of a pair of opposed struts 26 which can be in the form of U-shaped wire members.
  • the struts 26 are flexible parallel members and each set is biased inwardly towards the other set. The struts are firmly held in place by being clamped between the fingerpiece 18 and the support 19 as shown in FIG. 4.
  • a tubular housing 27 having opposed ends 28 and 29 which are peened over is loosely received within the walls 17 and rests on the flange 16.
  • the housing 27 contains a piezoelectric crystal firmly held in a housing 30.
  • the crystal is encapsulated in a cartridge having an anvil 31 protruding therefrom.
  • a lead wire 32 Connected to the opposed faces of the crystal is a lead wire 32 which terminates in an electrode 33 mounted in an insulated member 33a which can be a ceramic or a plastic for example.
  • the anvil 31 extends through an opening in the crystal housing 30.
  • the anvil 31 which abuts the encapsulated crystal extends downwardly beyond the confines of the encapsulated crystal housing 30.
  • the anvil 31 is preferably made of metal which enables it to withstand the impact imparted to it by a hammer 35.
  • the hammer 35 is also preferably metallic and of relatively high density.
  • the hammer 35 is slidably received within the housing 27.
  • the hammer can be seen through an opening 36 in the housing 27.
  • a boss 37 having a flange 38 thereon is fixed to the lower portion of the housing 27.
  • a coiled spring 39 fits around the boss 37 and bears on the flange 38 integral with the boss 37.
  • a bore 40 is countersunk in the hammer 35 and receives the opposite end of the coiled spring 39.
  • the hammer 35 is maintained firmly against the anvil 31 by the bias of the spring 39.
  • a notch 41 is formed in the hammer 35 adjacent the upper portion thereof.
  • the bight 26a of the U- shaped strut 26 fits within a corresponding opposed notch 41 in the hammer 35.
  • the cutout portion 36 of the housing 27 gradually tapers outwardly and forms a cam surface 42.
  • the struts 26 which are located in recesses 41 move the hammer 35 downwardly against the bias of the spring 39.
  • the struts 26 are cammed out of the the sheath 1].
  • the walls forming the fuel reservoir can be notches 41 by the cam surface 42 after the hammer 35 has travelled approximately three-eighths to one-half inch.
  • the hammer When the struts are removed from the notches, the hammer is accelerated into an impact engagement with the anvil 31.
  • the spring 25 Upon release of the fingerpiece 18, the spring 25 returns the fingerpiece with the struts 26 affixed thereto to its rest position.
  • the bight 260 on each of the struts thereby reengages in its respective notch 41 because the struts are flexibly urged inwardly towards each other.
  • a series of elements which can be metallic and can be in the form of washers 56 or solid wafers 57 or a solid member 55 is placed above the crystal housing 30.
  • a combination of washers and wafers can also be used.
  • a solid end plate 55 can -be also used either alone or in combination with washers and/or wafers over which the end of the housing 27 is peened. The effect of placing a solid plate or washers and/or wafers ad jacent the encapsulated crystal 30 is to create a series of sparks which increases the probability of an ignition occurring.
  • the action of striking the crystal produces only one positive and one negative voltage surge at the live electrode of very brief duration.
  • the brevity of the resulting discharge frequently fails to cause ignition.
  • the number of washers and/or wafers or the thickness of the solid member is chosen so that the reverberations in the crystal and the washer-wafer assembly resulting from the impact of the hammer 35 interact to produce three or four voltage peaks occurring in about I microseconds from the first impact.
  • the encapsulated crystal in its housing 30 is held by a block 47.
  • the block can be received within a cigarette lighter housing or in any other environment generally shown by dashed lines in FIG. 7.
  • block 47 has an opening 48 therein which is dimensioned to receive the crystal housing 30.
  • the lead wire 32 from the crystal can be snaked through a bore in the block and then it terminates in an electrode 33.
  • the electrode extends through an insulating member 49 which can be made of any known insulating material.
  • a solid end plate 50 which is preferably metallic-however. Any material can be used-is forced into the upper portion of the opening 48 so as to exert a compressive force against the crystal assembly.
  • the plate 50 can be given a slight chamfer along one side to provide a lead-in and the slot in the block 47 is dimensioned so that the plate 50 is a forced fit therein.
  • the end plate 50 can be formed with a pair of outward extensions 51 so that better reverberation characteristics can be imparted to the crystal from the end plate 50 which is shaped like a bridge.
  • a hammer 52 having a head 53 thereon is pivoted by means of a pin 54 to the block 47. Any known mechanism can be used to place the hammer under tension and then release the latter to strike the crystal as detailed in the first embodiment of this invention.
  • the end of the crystal unit could bear against a fingerlike portion formed integrally with the housing and dimensioned to have the required reverberation characteristics.
  • the flame which is produced can be adjusted by a knob 43 which, by means of a bushing 44, is connected such as by splines to the burner valve. Since the burner valve is not part of this invention further detail is considered to he superfluous.
  • the fingerpiece I8 is depressed, and since the struts 26 are connected to the fingerpiece, they are moved downwardly also.
  • the struts which are resiliently biased inwardly towards each other have a bight portion 26a which fit within a respective notch 41.
  • energy is stored in the spring 39 and when the struts 26a reach the cam portion 42 of the housing 27 they are biased outwardly away from each other thereby removing them from the notches.
  • the downward movement of the fingerpiece 18 also causes the leg 20 to tilt the lever 21 about its fulcrum 22 and thereby open the valve to cause gas to flow past the electrode 33.
  • the energy stored in the spring 39 will force the hammer to strike the anvil 31. Since the anvil is in contact with the piezoelectric crystal, a potential difference appears across the faces of the crystals.
  • the electrode 33 is connected to one face of the crystal and the other electrode is grounded. Since the burner valve 13a is at ground potential, it forms the other electrode and a series of sparks will jump the gap between the electrode 33 and the burner valve 13a to thereby ignite the gas emanating from the burner valve.
  • the operation may be described as follows: the action of striking one end of the crystal produces a shock wave which travels through the crystal and causes the plate 50 to be deflected away from the other end of the crystal. The crystal also contracts to produce,
  • the energy available at the spark gap is increased considerably in the ignition units according to the present invention. in mechanisms of the prior art only the energy of the initial two voltage peaks is usually available as energy for ignition at the spark gap whereas in the arrangement of the present invention, the first four peaks at least are each effective to produce a discharge.
  • a mechanism for creating an electrical discharge comprising:
  • a buffer means mounted adjacent said crystal to induce secondary vibrations of said crystal whereby said crystal will produce secondary electrical discharges subsequent to being struck by said impact means and upon reaction with said buffer means.
  • a mechanism for creating an electrical discharge as defined in claim 1 further characterized in that said buffer comprises at least one disc-shaped member.
  • a mechanism for creating an electrical discharge as defined in claim 2 further characterized in that said discshaped member has an opening therein.
  • a mechanism for creating an electrical discharge as defined in claim 1 further characterized in that said buffer comprises a relatively thick, solid end plate.
  • a mechanism for creating an electrical discharge as deiineti in claim 4 further characterized in that said end plate has extensions on opposite ends thereof forming a bridge shape.
  • a mechanism for creating an electrical discharge as defined in claim I further characterized in that said impact means comprises a hammer which is urged against piezoelectric crystal by a spring.
  • a mechanism for creating an electrical discharge as defined in claim 1 further characterized by a first housing enclosing said piezoelectric crystal and said impact means are in axial alignment and are finnly held within said first housing.
  • a mechanism for creating an electrical discharge as defined in claim 7 further characterized in that said buffer is mounted within said first housing between said crystal and the top portion of the first housing.
  • a mechanism for creating an electrical discharge as defined in claim 7 further characterized in that a second housing is telescopically received over said first housing, in which a fingerpiece is fixed to said second housing, means on said fingerpiece which engages said hammer and depresses it against the bias of the spring and releases said hammer after a predetermined amount of energy is stored in said spring.
  • a mechanism for creating an electrical discharge as defined in claim 1 further characterized in that said first housing is a block having an opening therein for the reception of said crystal.
  • a mechanism for creating an electrical discharge as defined in claim 10 further characterized in that said hammer is pivotally attached to said block and the hammerhead is in axial alignment with said crystal so as to strike the latter.
  • a mechanism for creating an electrical discharge as defined in claim 1 further characterized in that a fuel reservoir is adjacent said crystal, said fuel reservoir has a burner valve mounted on one end thereof, a fingerpiece mounted on said support to actuate the burner valve and the impact means, an electrode mounted adjacent said burner valve and electrically connected to said crystal such that upon actuation of 'said impact means, a spark ignites the gas emanating from said burner valve.
  • a mechanism for creating an electrical discharge as defined in claim 1 further characterized by a fuel reservoir mounted adjacent said crystal and having a flange thereon upon which said crystal is received.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Revetment (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
US846043A 1968-08-02 1969-07-30 Piezoelectric ignition mechanism Expired - Lifetime US3576383A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB37127/68A GB1282095A (en) 1968-08-02 1968-08-02 Improvements relating to piezo-electric ignition devices

Publications (1)

Publication Number Publication Date
US3576383A true US3576383A (en) 1971-04-27

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ID=10393952

Family Applications (1)

Application Number Title Priority Date Filing Date
US846043A Expired - Lifetime US3576383A (en) 1968-08-02 1969-07-30 Piezoelectric ignition mechanism

Country Status (15)

Country Link
US (1) US3576383A (OSRAM)
JP (1) JPS5110157B1 (OSRAM)
AT (1) AT304910B (OSRAM)
BE (1) BE736905A (OSRAM)
BR (1) BR6911252D0 (OSRAM)
CH (1) CH499063A (OSRAM)
DE (1) DE1939915A1 (OSRAM)
DK (1) DK133202C (OSRAM)
ES (1) ES370158A1 (OSRAM)
FI (1) FI52249C (OSRAM)
FR (1) FR2014992A1 (OSRAM)
GB (1) GB1282095A (OSRAM)
IE (1) IE33248B1 (OSRAM)
NL (1) NL6911727A (OSRAM)
SE (1) SE358024B (OSRAM)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741714A (en) * 1970-07-27 1973-06-26 Prince Sangyo Kk Piezoelectric type gas lighter
US3771943A (en) * 1971-03-23 1973-11-13 Ranson Corp Lighter
US3814571A (en) * 1970-12-19 1974-06-04 Mansei Kogyo Kk Piezoelectric smoker{40 s lighter
US3984738A (en) * 1973-05-14 1976-10-05 Braun Aktiengesellschaft Piezoelectric igniter for lighters
USD243100S (en) * 1974-09-24 1977-01-18 Societe Franco-Hispano-Americaine (Francispam) Lighter
US4471404A (en) * 1982-08-12 1984-09-11 Tokai Seiki Co., Ltd. Movable electrode type electronic gas lighter
US5550420A (en) * 1995-06-05 1996-08-27 Chien Sheng Machine Industrial Co., Ltd. Electronic ignition apparatus
US9325179B1 (en) * 2013-07-02 2016-04-26 Rostislav Voytenko Apparatus for generating a voltage surge from low voltage batteries that are charged in parallel and discharged in series
CN113078846A (zh) * 2021-03-11 2021-07-06 东南大学 一种点支承浮置板轨道用多级压电俘能装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5480461U (OSRAM) * 1977-11-15 1979-06-07
ES2125150B1 (es) * 1995-09-19 1999-08-16 Laforest Bic Sa Disposicion para alojar cristales piezoelectricos en mecanismos piezoelectricos para encendedores de gas.
CN108673405A (zh) * 2018-07-04 2018-10-19 上海交通大学 打火机灯机自动化组装装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425783A (en) * 1965-11-11 1969-02-04 Mansei Kogyo Kk Electric gas lighter having a piezoelectric stack
US3486075A (en) * 1967-02-11 1969-12-23 Bosch Gmbh Robert Piezoelectric igniter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425783A (en) * 1965-11-11 1969-02-04 Mansei Kogyo Kk Electric gas lighter having a piezoelectric stack
US3486075A (en) * 1967-02-11 1969-12-23 Bosch Gmbh Robert Piezoelectric igniter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741714A (en) * 1970-07-27 1973-06-26 Prince Sangyo Kk Piezoelectric type gas lighter
US3814571A (en) * 1970-12-19 1974-06-04 Mansei Kogyo Kk Piezoelectric smoker{40 s lighter
US3771943A (en) * 1971-03-23 1973-11-13 Ranson Corp Lighter
US3984738A (en) * 1973-05-14 1976-10-05 Braun Aktiengesellschaft Piezoelectric igniter for lighters
USD243100S (en) * 1974-09-24 1977-01-18 Societe Franco-Hispano-Americaine (Francispam) Lighter
US4471404A (en) * 1982-08-12 1984-09-11 Tokai Seiki Co., Ltd. Movable electrode type electronic gas lighter
US5550420A (en) * 1995-06-05 1996-08-27 Chien Sheng Machine Industrial Co., Ltd. Electronic ignition apparatus
US9325179B1 (en) * 2013-07-02 2016-04-26 Rostislav Voytenko Apparatus for generating a voltage surge from low voltage batteries that are charged in parallel and discharged in series
CN113078846A (zh) * 2021-03-11 2021-07-06 东南大学 一种点支承浮置板轨道用多级压电俘能装置

Also Published As

Publication number Publication date
IE33248L (en) 1970-02-02
BE736905A (OSRAM) 1969-12-31
CH499063A (fr) 1970-11-15
SE358024B (OSRAM) 1973-07-16
FI52249B (OSRAM) 1977-03-31
DK133202C (da) 1976-09-13
FR2014992A1 (OSRAM) 1970-04-24
NL6911727A (OSRAM) 1970-02-04
JPS5110157B1 (OSRAM) 1976-04-01
IE33248B1 (en) 1974-05-01
DE1939915A1 (de) 1970-02-05
DK133202B (da) 1976-04-05
ES370158A1 (es) 1971-04-01
AT304910B (de) 1973-01-25
FI52249C (fi) 1977-07-11
BR6911252D0 (pt) 1973-03-13
GB1282095A (en) 1972-07-19

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Owner name: NIHON SIBER HEGNER, K.K.

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