US3867653A - Percussion arrangements - Google Patents

Percussion arrangements Download PDF

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Publication number
US3867653A
US3867653A US398801A US39880173A US3867653A US 3867653 A US3867653 A US 3867653A US 398801 A US398801 A US 398801A US 39880173 A US39880173 A US 39880173A US 3867653 A US3867653 A US 3867653A
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United States
Prior art keywords
cam
hammer
piezo
thumb piece
electric element
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Expired - Lifetime
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US398801A
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English (en)
Inventor
Karl Heinz Duetze
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Individual
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Individual
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Publication of US3867653A publication Critical patent/US3867653A/en
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Classifications

    • 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

Definitions

  • ABSTRACT A percussion arrangement for piezo-electric apparatus especially for lighters comprising a piezo-electric ele ment, a pivotal hammer resiliently urged into contact with the piezo-electric element and a rotatable cam in contact with the hammer for raising the hammer above the piezo-electric element and allowing the hammer to drop onto the piezo-electric element by virtue of the resilient action on the hammer.
  • the cam comprises a plurality of sectors each having a first portion whose profile extends from the axis of rotation of the cam so as to move the hammer away from the piezo-electric element and a second portion whose profile approaches the axis of rotation to allow the hammer to drop onto the piezo-electric element.
  • a pivotal thumb piece is resiliently urged away from the cam and hammer and a link is pivotally connected to the thumb piece and bears against the cam to effect rotation thereof when the thumb piece is displaced.
  • the cam is freely rotatable and carries spindles, the link acting on one spindle when the user depresses the thumb piece to turn the cam, the link then passing to the succeeding spindle when the thumb piece is released and elevated.
  • the cam is therefore freely rotatable and is disconnected fromthe link at the instant when the hammer approaches the piezo-electric element to strike the same.
  • the present invention is concerned with a percussion arrangement for piezo-electric apparatus, in particular for lighters.
  • the operation of piezo-electric apparatus is based on the well-known fact that the application of a force on the faces of piezo-electric elements, for example, quartz or other crystals or certain ceramics creates between the faces, under predetermined conditions, an electric voltage proportional to this force. In the case of a lighter this electric voltage creates a spark which ignites the combustible.
  • An object of this invention is to provide an arrangement which eliminates this major inconvenience.
  • the invention contemplates a percussion arrangement for piezo-electric apparatus in which the movement of a hammer is controlled by a cam with around profile.
  • This round profile has a variable radius of curvature, but variable in continuous fashion with the exclusion of any angles.
  • the percussion apparatus comprises, in known manner, on the one hand, a pivoting hammer urged towards the striking position by a spring and provided with a support surface and, on the other hand, a thumb piece urged towards the raised position by a spring and capable of being manually depressed; the support surface of the hammer is urged into contact against a free-wheeling rotatable cam comprising at least one sector which includes a first portion of increasing profile extending from the axis of rotation of the cam and on which is displaced the supporting surface to elevate the hammer while the cam turns, and a second portion of decreasing profile approaching the said axis of rotation and permitting the supporting surface to fall from the portion of increasing profile at the same time as the hammer falls onto the piezo-electric element, a kinematic uni-directional connection from the thumb piece towards the free-wheeling cam effecting turning of the free-wheeling cam as regards at least the first portion of the sector while the user depresses the said thumb piece.
  • each sector presents a round profile comprising a first portion of increasing radius from a hollow to a projection and on which the supporting surface is displaced to raise the hammer and a second portion of decreasing radius from the said projection to a hollow along and on which the supporting surface moves to cause the free-wheeling cam to turn while the hammer falls.
  • the hammer in the position of rest of the percussion arrangement according to the invention, the hammer is maintained by its spring in a lower position, the support surface of the hammer rests in a hollow of the freewheeling cam and immobilizes the same; when the user depresses the thumb piece, the kinematic unidirectional connection effects turning of the freewheeling cam, the support surface of the hammer slides from the hollow to the projection and lifts the hammer; when the support surface arrives at the projection the position becomes unstable: the support surface causes the free-wheeling cam to turn and the hammer falls freely under the action of its spring to strike the piezoelectric element with constant energy whatever speed and force is effected by the user on the thumb piece and this constitutes an important advantage of the invention.
  • the kinematic connection according to the invention includes on the said free-wheeling cam an abutment for each sector and an oscillating link supported by the thumb piece and urged resiliently towards the free-wheeling cam, the link engaging and moving one of the abutments during manual depression of the thumb piece then passing to the succeeding abutment while the spring of the thumb piece urges it to the raised position.
  • the action by the link may be effected by a spring (as described later) or by traction, and that the link may be inherently resilient thus dispensing with a separate spring.
  • the free-wheeling cam comprises three sectors and the two profile portions of each sector may be symmetric (as described later) or asymmetric.
  • FIG. 1 is a longitudinal section of a percussion arrangement according to the invention
  • FIG. 2 is a view of a detail of FIG. 1;
  • FIG. 3 is similar to FIG. 1 without the return springs and without the piezo-electric element and showing the position (unstable) of the various components at the instant when the roller of the hammer passes from the first to the second portion of the profile of a sector of the cam.
  • the percussion arrangement according to the invention is shown mounted in a support 1 of generally U-formation.
  • a piezo-electric element 3 is screwed into the base of the U.
  • a hammer 5 is pivoted by its relatively straight handle 7 on a fixed axle 9 of the support 1, its relatively large head 11 being capable of striking the head of the piezo-electric element 3.
  • a relatively strong helical spring 13 is symmetrically wound on the axle 9 on both sides of the handle 7 and is supported by a central loop 15 on the hammer 5 and by its two ends 17 on a strut 19 of the support 1.
  • the handle 7 of the hammer 5 supports a transverse spindle 21 on which freely turn two symmetrical lateral wheels 23.
  • a cam 25 is freely mounted on a fixed spindle 27 of the support 1.
  • the free-wheeling cam 25 has three sectors, each sector covering an angle of and'in each sector the portion of increasing radius from a hollow 29 to a projection 31 is symmetrical with the portion of decreasing radius from the projection 31 to a hollow 29.
  • the freewheeling cam is slightly less large than the support 1 and it is traversed by three transverse spindles 33 equiangularly spaced at l20 which turn freely and pass through it at each side (they also have a guiding function as will be described later).
  • a thumb piece 37 is pivoted on axle 39 at the top of the support and has the form of an inverted U.
  • a helical spring 41 wound on the axle 39 and abutting the strut 19 and under the thumb piece 37.
  • Two arcuate slots 43 formed on the limbs of the thumb piece 37 slide on a strut 45 of support 1 and limit the movement of the thumb piece.
  • the latter has a transverse axle 47 on which pivots a stirrup 49 of inverted U-form urged by a light helical spring 51 wound on the axle 47 and abutting under the stirrup 49 and under the front of the thumb piece 37.
  • the two depending limbs 53 of the stirrup 49 constitute two links which extend into the spaces between the freewheeling cam 25 and its two wheels 35 which guide them in the transverse sense.
  • the links 53 at their lower ends are curved towards the free-wheeling cam 25 along a round path 55 followed by a vertical part 57 to form a hook 59 which can engage an end of one of the spindles 33 of the free-wheeling cam 25, the links also including a lower vertical part 61.
  • the links form a drive means to rotate the cam as will be explained later.
  • the free-wheeling cam 25 is immobilized by the wheels 23 coming to rest in the succeeding hollow 29.
  • the links 53 are moved towards the free-wheeling cam 25 by the spring 5] bearing under the ends of the succeeding spindle 33 of the cam 25 at first by the curved parts 55 (FIG. 2) then by the vertical parts 57 and finally by the lower vertical parts 61.
  • the percussion arrangement once again takes up the position of rest (FIG. 1), the free-wheeling cam 25 having been rotated one third of a revolution.
  • a percussion arrangement for piezo-electric apparatus comprising a piezoelectric element, a pivotal hammer resiliently urged into contact with the piezo-electric element, a rotatable cam in contact with the hammer and which comprises at least one sector having a first portion whose profile extends from the axis of rotation of the cam so as to move the hammer away from the piezo-electric element, and a second portion whose profile approaches the axis of rotation to allow the hammer to drop onto the piezo-electric element, a pivotal thumb piece resiliently urged away from the hammer and cam, and drive means coupled to said thumb piece for bearing against said cam to effect rotation of the cam when the thumb piece is displaced, the cam being freely rotatable and being disconnected from the drive means at the instant when the hammer approaches the piezo-electric element to strike the same.
  • said sector of the free-wheeling cam is constituted by a tooth presenting a flank of increasing profile and a reentrant flank which permits the support surface of the hammer to fall freely upstream of the flank of increasing profile.
  • cam sector has a round profile and said first portion is of increasing radius from a hollow to a projection and along which is displaced a support surface of the hammer and said second portion is of decreasing radius from the projection to a succeeding hollow and on which the support surface rests to effect turning of the free-wheeling cam during descent of the hammer.
  • An arrangement according to claim 1 comprising a support of generally U-shape, the piezo-electric element being screwed into the base of the U, the hammer including a handle supporting an axis on which turn two symmetrical lateral wheels, the free-wheeling cam being traversed by three equi-angularly spaced spindles whose ends constitute the abutments, a stirrup in the form of an inverted U pivoted to the thumb piece and including two limbs which constitute the links the lower ends of which are curved towards the free-wheeling cam along a circular path followed by a vertical part to form a hook for engaging a spindle and then a recess including a lower vertical part.
  • An arrangement according to claim 1 comprising a uni-directional kinematic connection between the thumb piece and the cam inclusive of said drive means, said connection comprising an abutment for each cam sector and a link pivotably mounted on the thumb piece and resiliently urged against said thumb piece, the link acting on one of the said abutments when the user depresses the thumb piece then passing to the succeeding abutment when the thumb piece is released and elevated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Auxiliary Devices For Music (AREA)
US398801A 1972-09-27 1973-09-19 Percussion arrangements Expired - Lifetime US3867653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7234166A FR2209079A1 (fr) 1972-09-27 1972-09-27 Dispositif de percussion pour appareils piezo-electriques, en particulier pour briquets

Publications (1)

Publication Number Publication Date
US3867653A true US3867653A (en) 1975-02-18

Family

ID=9104835

Family Applications (1)

Application Number Title Priority Date Filing Date
US398801A Expired - Lifetime US3867653A (en) 1972-09-27 1973-09-19 Percussion arrangements

Country Status (14)

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US (1) US3867653A (US20110105765A1-20110505-C00013.png)
JP (1) JPS4970766A (US20110105765A1-20110505-C00013.png)
AT (1) AT319646B (US20110105765A1-20110505-C00013.png)
AU (1) AU476751B2 (US20110105765A1-20110505-C00013.png)
BE (1) BE804685A (US20110105765A1-20110505-C00013.png)
BR (1) BR7307393D0 (US20110105765A1-20110505-C00013.png)
CA (1) CA986566A (US20110105765A1-20110505-C00013.png)
CH (1) CH568528A5 (US20110105765A1-20110505-C00013.png)
DE (1) DE2346731C3 (US20110105765A1-20110505-C00013.png)
ES (1) ES195482Y (US20110105765A1-20110505-C00013.png)
FR (1) FR2209079A1 (US20110105765A1-20110505-C00013.png)
GB (1) GB1443043A (US20110105765A1-20110505-C00013.png)
IT (1) IT996730B (US20110105765A1-20110505-C00013.png)
NL (1) NL7313353A (US20110105765A1-20110505-C00013.png)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139792A (en) * 1975-06-19 1979-02-13 Matsushita Electric Industrial Co., Ltd. High voltage generating device
US4156825A (en) * 1977-05-06 1979-05-29 Matsushita Electric Industrial Company, Limited Piezoelectric high voltage generating device
US4523261A (en) * 1982-08-05 1985-06-11 West Philip G Light source, manually operated
US20050193063A1 (en) * 1997-10-22 2005-09-01 Cannata Michael J. Web-based groupware system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2790065B1 (fr) 1999-02-22 2001-05-18 Sourdillon Sa Dispositif de percussion pour une cartouche piezo-electrique et robinet a gaz equipe d'un tel dispositif

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856564A (en) * 1956-01-31 1958-10-14 John W Derwin Barium titanate crystals as a portable source of electric power
US3387912A (en) * 1965-11-26 1968-06-11 Mansei Kogyo Kk Ignition mechanism of liquefied gas fueled lighter
US3506386A (en) * 1967-08-28 1970-04-14 Mansei Kogyo Kk Electric gas lighter with a manually operable piezoelectric ignition device
US3724993A (en) * 1972-01-17 1973-04-03 Mansei Kogyo Kk Impacting mechanism for impacting a piezo-electric body

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856564A (en) * 1956-01-31 1958-10-14 John W Derwin Barium titanate crystals as a portable source of electric power
US3387912A (en) * 1965-11-26 1968-06-11 Mansei Kogyo Kk Ignition mechanism of liquefied gas fueled lighter
US3506386A (en) * 1967-08-28 1970-04-14 Mansei Kogyo Kk Electric gas lighter with a manually operable piezoelectric ignition device
US3724993A (en) * 1972-01-17 1973-04-03 Mansei Kogyo Kk Impacting mechanism for impacting a piezo-electric body

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139792A (en) * 1975-06-19 1979-02-13 Matsushita Electric Industrial Co., Ltd. High voltage generating device
US4156825A (en) * 1977-05-06 1979-05-29 Matsushita Electric Industrial Company, Limited Piezoelectric high voltage generating device
US4523261A (en) * 1982-08-05 1985-06-11 West Philip G Light source, manually operated
US20050193063A1 (en) * 1997-10-22 2005-09-01 Cannata Michael J. Web-based groupware system

Also Published As

Publication number Publication date
JPS4970766A (US20110105765A1-20110505-C00013.png) 1974-07-09
AU476751B2 (en) 1976-09-30
NL7313353A (US20110105765A1-20110505-C00013.png) 1974-03-29
GB1443043A (en) 1976-07-21
FR2209079B1 (US20110105765A1-20110505-C00013.png) 1976-01-30
CA986566A (en) 1976-03-30
ES195482Y (es) 1975-06-16
AT319646B (de) 1974-12-27
CH568528A5 (US20110105765A1-20110505-C00013.png) 1975-10-31
BR7307393D0 (pt) 1974-09-05
IT996730B (it) 1975-12-10
ES195482U (es) 1975-02-01
FR2209079A1 (fr) 1974-06-28
AU6048273A (en) 1975-03-20
DE2346731B2 (de) 1978-02-16
BE804685A (fr) 1974-01-02
DE2346731C3 (de) 1978-10-12
DE2346731A1 (de) 1974-04-04

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