Spark Projecter, E.g., Flint And Abrasive Striker, Etc. Patents (Class 431/273)
  • Patent number: 8967899
    Abstract: A writing pen, including a first pen portion containing an ink cartridge, a ferro rod extending from the first pen portion, and a removable second pen portion removably positionable over the first pen portion. The second pen portion includes a whistle integrally formed therewith. A third pen portion is removably positionable over the first pen portion and overlys the ferro rod to substantially conceal the ferro rod. A removable striker having a first end configured for contacting the ferro rod is installable onto the third pen portion so that either the first end of the striker or the second end of the striker extends outwardly from the third pen portion.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: March 3, 2015
    Assignee: Taylor Brands, LLC
    Inventors: Jiun-Yu Chu, Morgan Taylor
  • Patent number: 8807992
    Abstract: A combustion device has a controllable venting mechanism, within a piston/plunger or a chamber/housing, to allow the flow of air out of the chamber to enable the piston/plunger to be freely inserted for the purpose of storage or to maintain the air within the chamber to enable the piston/plunger to create a pressure necessary for combustion.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: August 19, 2014
    Inventor: Jeffrey R. Wagner
  • Patent number: 8747107
    Abstract: A gas lighter with safety mechanism comprising an inner frame mounted on top of a fuel reservoir and provided with a valve for releasing fuel contained in the fuel reservoir; an outer frame mounted on top of the inner frame and having two supports each of which is provided with a L-shaped supporting hole including a vertical section and a horizontal section; a lever sandwiched between the two supports and pivotable with respect to the outer frame to actuate the valve; a flint disposed between the two supports; a friction wheel rotatably sleeved on a shaft between the two supports, the shaft are movably supported in the supporting holes, the friction wheel is separate from the flint when the shaft is moved to the vertical sections while contacts the flint to enable to generate sparks by rotating the friction wheel when the shaft is moved to the horizontal sections.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: June 10, 2014
    Assignee: Tien Sung Electric Company Limited
    Inventor: Ka Wai Mok
  • Patent number: 8348539
    Abstract: A writing pen, including a writing pen portion; a ferro rod positionable to extend from the writing pen portion; and a striker portion positionable to extend from the writing pen portion to substantially conceal the ferro rod, The striker portion has one or more striker members which may be struck against the ferro rod for generating sparks.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: January 8, 2013
    Assignee: Taylor Brands, LLC
    Inventors: Jiun-Yu Chu, Morgan Taylor
  • Patent number: 8241033
    Abstract: A safety flint lighter is provided that an adult is allowed to easily make an ignition with a single action without allowing a child to easily lean how to ignite a flame. A safety flint lighter has an ignition device using a flint and a sparking file wheel and structured not permitting a child to ignite a flame. An axial hole, rotatably supporting a rotary shaft of a sparking file wheel, is in a form permitting the rotary shaft, at an axis thereof, to directly move between a first position the rotary shaft is normally hold and distant from a tank body, a second position established closer to the tank body than the first position and on an axis of a flint and a third position established oppositely to a nozzle with respect to a straight line connecting between the first position and the second position.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: August 14, 2012
    Inventor: Aya Shimizu
  • Patent number: 8202085
    Abstract: The present invention presents a power generating spark emitting apparatus in which a mischmetal flint rod also operates as a electron generating source. Either the handle material itself or an internal cathode operates in conjunction with the mischmetal flint rod to form a power source. The cathode and anode are connected across a light emitting diode or incandescent lamp to provide an illumination device. A strike plate mounted within a guided angled recess is disposed on a housing to present the mischmetal flint rod with a strike source such dragging the mischmetal flint rod across the strike plate release sparks from the mischmetal flint rod sufficient to ignite a tinder bundle.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: June 19, 2012
    Inventor: Andrew Putrello
  • Patent number: 8186995
    Abstract: A fire-starter device for survival or emergency use has a handle portion and case portion that twist together, to sheath a mischmetal flint rod inside the case, and a seal ring protects the flint rod from environmental moisture. The case has a steel strike plate and a guide channel. The mischmetal flint rod favorably has a composition of cerium—50%, lanthanum—26%, magnesium—10%, praseodymium—3%, neodymium—1%, and iron—10%.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: May 29, 2012
    Inventor: Andrew C. Putrello, Jr.
  • Publication number: 20100014284
    Abstract: A multipurpose flashlight comprising a slotted locking donut and insert stick that can be used to start a fire. The multipurpose flashlight provides an easy way for an individual to have all the tools they will need to create a fire in a survival situation or anytime they are participating in outdoor activities.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 21, 2010
    Inventors: Jeffery D. Hancock, Dennis Hancock
  • Publication number: 20090214995
    Abstract: The present invention presents a power generating spark emitting apparatus in which a mischmetal flint rod also operates as a electron generating source. Either the handle material itself or an internal cathode operates in conjunction with the mischmetal flint rod to form a power source. The cathode and anode are connected across a light emitting diode or incandescent lamp to provide an illumination device. A strike plate mounted within a guided angled recess is disposed on a housing to present the mischmetal flint rod with a strike source such dragging the mischmetal flint rod across the strike plate release sparks from the mischmetal flint rod sufficient to ignite a tinder bundle.
    Type: Application
    Filed: February 22, 2008
    Publication date: August 27, 2009
    Inventor: Andrew Putrello
  • Publication number: 20090214996
    Abstract: A fire-starter device for survival or emergency use has a handle portion and case portion that twist together, to sheath a mischmetal flint rod inside the case, and a seal ring protects the flint rod from environmental moisture. The case has a steel strike plate and a guide channel. The mischmetal flint rod favorably has a composition of cerium—50%, lanthanum—26%, magnesium—10%, praseodymium—3%, neodymium—1%, and iron—10%.
    Type: Application
    Filed: February 25, 2009
    Publication date: August 27, 2009
    Inventor: Andrew C Putrello
  • Patent number: 7568910
    Abstract: In an igniter which is ignited by rotation of an actuator, ignition of the igniter is disabled by a simple rotation of the actuator in the initial state or in the non-used state and the ignition lock can be released in a series of igniting actions without preventing the automatic return of the igniter to the locked state, while ensuring excellent operability of the igniter. The igniter is provided with an actuator mechanism (5) for carrying out an igniting operation on a valve mechanism (7) for controlling supply of gas from a reservoir portion (2) to a gas nozzle (9) in an end portion of a rod-like portion (4) and an ignition mechanism (8). The actuator mechanism (5) comprises a rotatable actuator (51), a fulcrum member (52) about which the actuator is rotated, and an interlocking member (53) which operates a piezoelectric unit (8).
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: August 4, 2009
    Assignee: Tokai Corporation
    Inventors: Nobuyuki Serizawa, Yoshimitsu Kaga, Yoshihiro Kashoji
  • Patent number: 7462033
    Abstract: A lighter incorporates with a fuel supply arrangement which includes a replaceable fuel cartridge detachably received in a receiving cavity of a casing for storing a liquefied fuel, and a gas releasable valve extended from the replaceable fuel cartridge for controlling a flow of gas from the replaceable fuel cartridge. Therefore, a user is able to refill the fuel by simply replacing a used replaceable fuel cartridge with a new replaceable fuel cartridge which is fully pre-filled with fuel.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: December 9, 2008
    Inventor: Yiling Xie
  • Publication number: 20080202495
    Abstract: A burner for range covers or similar, to allow a broad range of calorific capacities, and a better burner distribution in the cover, with a generally semi-rectangular form, and containing a plurality of ports and a plurality of manners to ignite it, wherein the burner is capable of interacting with other burners at determined length and height distances, creating discontinuous flames between the burners.
    Type: Application
    Filed: February 20, 2008
    Publication date: August 28, 2008
    Inventors: VICTOR GERARDO CALOCA GALINDO, Jose Arturo Lona Santoyo, Roberto Cabrera Botello
  • Patent number: 6945771
    Abstract: A lighter incorporates with a fuel supply arrangement which includes a replaceable fuel cartridge detachably received in a receiving cavity of a casing for storing a liquefied fuel, and a gas releasable valve extended from the replaceable fuel cartridge for controlling a flow of gas from the replaceable fuel cartridge. Therefore, a user is able to refill the fuel by simply replacing a used replaceable fuel cartridge with a new replaceable fuel cartridge which is fully pre-filled with fuel.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: September 20, 2005
    Inventor: Yiling Xie
  • Publication number: 20040137393
    Abstract: The invention provides a safety stopper for use with a striker of the type used by welders and fabricators to light welding torches. The striker defines an open area. The safety stopper includes a cover shaped to cover a substantial portion of the open area, and shaped to expose the striker strike plate and flint. The safety stopper also includes attachment means for attaching the cover to the striker, such that the cover defines a clear path for movement of a first push-tab of the striker with respect to a second push-tab of the striker, and such that the cover, when attached to the striker, defines a clear path for movement of the first push-tab with respect to the second push-tab; such that when the striker, with the safety stopper attached, is carried hands-free attached to an operator's belt, the safety stopper reduces the chances of the operator being thrown off balance by the striker catching on an external object.
    Type: Application
    Filed: December 12, 2003
    Publication date: July 15, 2004
    Inventor: Lawrence C. Little
  • Publication number: 20030190571
    Abstract: A combination gas cylinder striker and wrench device for use with a gas cylinder having a cylinder valve with a valve stem. The combination is made of a pair of wire frame members that are manipulatable to strike a spark for igniting a flammable gas form a gas cylinder. A gas cylinder wrench is affixed to one of the wire frame members. The gas cylinder wrench has a raised boss having an opening therethrough that is sized to interfit with the valve stem of the gas cylinder. The raised boss stabilizes the affixation of the wrench to the wire frame member by being force fitted into a U-shaped area of the wire frame member.
    Type: Application
    Filed: April 5, 2002
    Publication date: October 9, 2003
    Inventors: Michael L. Paleno, Daniel T. Pirl
  • Publication number: 20030190572
    Abstract: A combination gas cylinder striker and wrench device for use with a gas cylinder having a cylinder valve with a valve stem. The combination is made of a striker having a pair of wire frame members that are manipulatable to strike a spark for igniting a flammable gas form a gas cylinder. A gas cylinder wrench is affixed to one of the wire frame members. The gas cylinder wrench has a central portion having an opening therethrough that is sized to interfit with the valve stem of the gas cylinder. The central portion is located at a U-shaped area of the wire frame member to stabilize the affixation of the gas cylinder wrench to the wire frame member.
    Type: Application
    Filed: June 11, 2002
    Publication date: October 9, 2003
    Inventors: Michael L. Paleno, Daniel T. Pirl
  • Patent number: 6186774
    Abstract: A lighter assembly especially suitable for burning butane gas as a fuel is provided in modular form which consists essentially of two unitary subassemblies which may be detachably mounted together to form the assembled lighter. The lighter assembly, which features low cost and structural simplicity, is constructed with the first subassembly comprising a hollow body defining a chamber for storing the fuel, an inlet valve assembly for inserting fuel into said chamber, a burner valve assembly for controlling emission of the fuel from said chamber, and a burner valve actuating arm for opening and closing the burner valve.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: February 13, 2001
    Inventor: Calogero Butera, Jr.
  • Patent number: 6168421
    Abstract: A safety lighter with a safety strike wheel assembly including a center strike wheel, two side turning wheels which are fixedly mounted with the center strike wheel, and two driving wheels which are respectively and loosely mounted to the two side turning wheels. Each side turning wheel has an external toothed surface adapted to be inserted into the strike wheel to secure the two turning wheels to the strike wheel. To operate the safety lighter, a user must press on the driving wheels to have them frictional engage with the two side turning wheels to turn the strike wheel to create a spark.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: January 2, 2001
    Assignee: Easton Enterprises, Inc.
    Inventor: Ron Shaorong Hsieh
  • Patent number: 5993198
    Abstract: An apparatus is disclosed for providing more uniform lighter spark wheel actuation. Uniform actuation is facilitated in the apparatus according to the invention by reducing the formation of deep grooves and high ridges in the flint. In one embodiment of the invention, a spark wheel coil formed from wire having at least one substantially flat side is utilized to reduce ridge formation. The spark wheel coil includes pitting in a transversal direction made on the outer surface of the coil. The pitting forms projections which protrude from the core of the coil and which, when contacting a pyrophoric flint while the coil spring is rotated about its axis, produce a tangential cutting across the pyrophoric flint to emit an ignition spark.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: November 30, 1999
    Assignee: BIC Corporation
    Inventors: Paul H. Adams, James M. McDonough, Jean Michel Monnier
  • Patent number: 5919037
    Abstract: A hand operated fire starting tool for use as a survival aid and in general outdoor activities such as camping. The tool includes a case, a pyrophoric element mounted to the case for reciprocal and rotational movement between a stored position and an operating position. It also includes means such as a spring for biasing the element toward the operating position and a striker which may be engaged with the element. The tool also includes a cap which is both pivotally and slidably mounted to the case for releasingly securing the element in its stored position.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: July 6, 1999
    Assignee: Survival, Inc.
    Inventors: Lee W. Brillhart, III, Rick W. Stewart
  • Patent number: 5897307
    Abstract: A disposable lighter having a safety function for preventing unwanted ignition, which eliminates the two driving wheels provided in conventional gas lighter and renders a radius of a striking wheel approximately equal to a curved corner formed at a top end corner of each wing portion of a wind shield so as to sidewardly cover the striking wheel. Therefore, the disposable lighter may only be ignited by the user's thumb on purpose that can prevent the striking wheel from being rubbed with any object to accidentally ignite. Moreover, an underage kid is also unable to ignite the disposable lighter without any adult supervision by preventing the striking wheel be stuck by a minor's thumb.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: April 27, 1999
    Inventor: Ming Yu Chang
  • Patent number: 5846069
    Abstract: A lighter including a lighter body containing fuel which is released through a nozzle. An actuating lever is placed on a mounting frame which is disposed on top of the lighter body. Activating the actuating lever causes fuel to flow through the nozzle. A striker rotatably mounted on the mounting frame is engaged to a piece of flint wherein rotating the striker against the piece of flint causes a spark to be generated, which ignites the fuel and causes a flame. A rotatable wheel hood having a safety position and an activation position is placed over the striker whereby placing the rotatable wheel hood in the safety position prevents the user from rotating the striker and causing a spark to be generated. Placing the wheel hood in the activation position allows the user to rotate the striker to generate a spark.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: December 8, 1998
    Assignees: Polycity Industrial Limited, Tak Fi International (Holdings) Limited
    Inventor: Tak Chi Sher
  • Patent number: 5735294
    Abstract: The lighter of the present invention provides a resiliently deformable guard that covers a portion of the striking wheel assembly. To operate the lighter, a user exerts sufficient pressure to depress the guard before rotating the striking wheel assembly. The present invention provides retention mechanisms to make removal of the guard more difficult. Further, the lighter of the present invention provides brake members to prevent the rotation of the striking wheel assembly when the user attempts to release fuel prior to rotating the striking wheel assembly.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: April 7, 1998
    Assignee: Bic Corporation
    Inventors: James M. McDonough, Gerald J. Doiron, Paul H. Adams, Chris A. Barone, Floyd B. Fairbanks
  • Patent number: 5538418
    Abstract: A welding striker apparatus having a dimple which allows the welder to both clean a welding rod covered in flux and re-strike the rod after cleaning. The apparatus may be attached to the welder via a retractable chain assembly allowing the tool to be attached to the welder's uniform yet out of the way during welding. The dimple is roughened so that the welder may remove the flux from the welding rod. The striker has a replaceable flint which rubs against a roughened striker allowing the welder to re-strike the welding rod after cleaning.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: July 23, 1996
    Inventor: Thomas M. Stinnett
  • Patent number: 5520197
    Abstract: The lighter of the present invention provides a resiliently deformable guard that covers a portion of the striking wheel assembly. To operate the lighter, a user exerts sufficient pressure to depress the guard before rotating the striking wheel assembly. The present invention also provides retention mechanisms to make the removal of the guard more difficult. Further, the lighter of the present invention provides brake members to prevent the rotation of the striking wheel assembly when the user attempts to release fuel prior to rotating the striking wheel assembly.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: May 28, 1996
    Assignee: BIC Corporation
    Inventors: James M. McDonough, Gerald J. Doiron, Paul H. Adams, Chris A. Barone, Floyd B. Fairbanks
  • Patent number: 5483978
    Abstract: A disposable roll and press operated lighter including a shield shaped to the wheel and adapted to partly cover the wheel deterring a child from turning the wheel to an extent that ignites vapor from the lighter.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: January 16, 1996
    Assignee: Bic Corporation
    Inventor: Gerald J. Doiron
  • Patent number: 5214853
    Abstract: A fire igniting device which includes a flint adhered to a brass strip and has been fitted into the body of a bladed scout knife. The fire igniting device locks into the knife when not in use and is easily available for use when the blade is opened, the invention allows full function of the blade attached within the body of the knife.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: June 1, 1993
    Inventors: Robert W. Bray, Sean P. Bray
  • Patent number: 5096414
    Abstract: The ignition device of the lighter comprises a striker wheel (6) acting on a spark stone (2). The striker wheel is disposed between two plates (7) and (8) of greater diameter than and freely rotatable with respect to the wheel. Actuation of this latter is obtained by friction thanks to the deformation (11) of the pulp of the thumb (10) of the user, and may not be driven by a child as the pulp of the finger of children is not sufficiently thick.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: March 17, 1992
    Assignee: Parnat S.A.
    Inventor: Conrad Zellweger
  • Patent number: 5084943
    Abstract: A device for attaching a flat file hooded gas lighter to an accessible location. The device includes a body structure having a magnet on one end and a fastening clip on the other end and groove like threads and a stop flange therebetween. The body structure maybe conveniently made from a plastic material.
    Type: Grant
    Filed: October 4, 1990
    Date of Patent: February 4, 1992
    Inventor: Paul J. DeCanio
  • Patent number: 4884964
    Abstract: Disclosed is a file assembly which is adapted to be fitted in and integrally connected to the top of a gas lighter housing, comprising a rotatable file disk and a file block having two opposite support plates each having a semicircular-and-wide-and-narrow slot made on its inside, leaving its outside for ornamental space. Necessary bearings for the flint wheel can be formed by inserting narrow-and-wide rectangular pieces in the semicircular-and-narrow-and-wide slots of the opposite support plates, leaving the semicircular-and-narrow rectangular spaces enough to snugly accommodate the opposite ends of the axle of the flint wheel, thereby eliminating the necessity of making very small pivot holes exactly at selected places in selected parts of the lighter, and hence reducing the manufacturing cost by as much as would cost if such very small holes were made exactly at selected places in selected parts of the lighter.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: December 5, 1989
    Assignee: Tokai Corporation
    Inventor: Tomio Nitta
  • Patent number: 4884965
    Abstract: Disclosed is a gaslighter structure comprising a lighter housing equipped with female pivot means provided to the rear, upper side of the housing; a fire-striking unit having push-fit means to integrally combine the unit with the housing, and a cap having male pivot means to fit in the female pivot means of the housing. This arrangement permits the push-fit assembling of the fire-striking unit to the housing and the cap to the housing, thereby simplifying the assembling work and accordingly contributing the automatization of the assembling process.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: December 5, 1989
    Assignee: Tokai Corporation
    Inventor: Tomio Nitta
  • Patent number: 4878836
    Abstract: Disclosed is an improved gaslighter structure using a flint for striking flame. To facilitate the assembling work so as to permit automatic assembling, the gaslighter structure uses a mount which is designed to permit the assembling of parts into a flame-striking device and the connecting of the flame-striking device to related parts for synchronizing the flame-striking operation with the ejection of petroleum gas from the nozzle assembly by simply mounting the parts to the mount at selected portions. Then, the mount with the flame-striking device and associated parts is push-fitted to the lighter housing.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: November 7, 1989
    Assignee: Tokai Corporation
    Inventor: Tomio Nitta
  • Patent number: 4865541
    Abstract: An ignition stone container which encloses ignition stones to be used in a cigarette lighter when an ignition stone in use is abraded and to be exchanged. A projection to rotate a locking screw threadedly attached to an ignition stone taking-in portion in the lighter is projected integrally with a container body. When an ignition stone contained in the lighter is abraded and firing failure occurs, top end portion of the projection being projected to the ignition stone container is touched to a screw head groove of the locking screw leading to an ignition stone enclosing portion in the lighter and then rotated, thereby the locking screw can be removed and the ignition stone can be exchanged. After the exchanging slao, the projection is touched to the screw head groove of the locking screw and rotated thereby the locking screw can be threadedly tightened.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: September 12, 1989
    Inventor: Tsuneharu Okada
  • Patent number: 4822276
    Abstract: This invention relates to a pyrophoric igniter, of the type commonly used in cigarette lighters. The specific improvement being a mechanically biased clutch capable of preventing the rotation of the friction wheel while the mechanical biasing clutch is engaged. The clutch may be selectively engaged or disengaged. The clutch is designed to make the lighter more safe, especially when it is viewed as a plaything by young children.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: April 18, 1989
    Inventor: Jerry L. Bisbee
  • Patent number: 4698068
    Abstract: A fire igniting device which includes a rod of an ignitable material, particularly magnesium, and has a pyrophoric element adhered to the rod along its length. A head is secured to the rod, and also may be fitted to a case, so that a spent rod can be removed and discarded from a handle, and another rod installed. The case is adapted to receive the rod during periods of non-use, to protect it from contaminants; and, during use, the case may be fitted to the other end of the head so as to increase the effective length of the head and provide a more comfortable grip to the user. A metal striker for striking the pyrophoric element is conveniently tethered to the case. Magnesium shavings are scraped from the rod, and are then ignited by striking the pyrophoric element with the striker. The fire igniting device may be incorporated into the handle of a survival knife, whereby the handle functions as a case for the magnesium rod during periods of non-use.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: October 6, 1987
    Inventor: Eric Jensen
  • Patent number: 4509916
    Abstract: A device for producing ignition sparks when falling on a pyrophoric flint includes a coil spring having at least one coil which is provided with a pit in a transversal or inclined direction on the outer longitudinal line of the coil. The pit is formed of "saw-teeth" type projections which protrude from the original core of the coil, thereby forming on the outer surface of the coil spring cutting projections which, when falling on a pyrophoric flint applied to the outside of the coil spring and when the coil spring turns about its axis, produce a tangential hauling of the pyrophoric flint thereby emitting an ignition spark.
    Type: Grant
    Filed: January 11, 1984
    Date of Patent: April 9, 1985
    Assignee: Laforest, S.A.
    Inventor: Guy Laforest Le Boudec
  • Patent number: 4459096
    Abstract: An igniter assembly is disclosed for detachable mounting on and use with a standard gas torch. The subject igniter can be actuated from a point remote from the torch nozzle to cause a shower of sparks above and across the torch nozzle to effect ignition of a gaseous mixture flowing from the torch.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: July 10, 1984
    Inventors: David P. Fischer, Elbert B. Updike, Jr.
  • Patent number: 4027376
    Abstract: This method is particularly suited for practice on a multiple spindle screw machine in which each work spindle carries a length of bar stock. The work end of each bar is formed, sized and drilled in a conventional manner to form thereon a wheel shaped workpiece which is then rotated between two thread dies to form diagonal grooves in its periphery. The work is then subjected to two successive broaching operations which cut grooves transversely of the lands formed by the threading dies. When the work has entered the bore of the second broaching tool, the tool is rotated slightly relative to the work to upset the teeth so that their sharp cutting edges are caused to face outwardly.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: June 7, 1977
    Assignee: Davenport Machine Tool
    Inventor: Earl W. Brinkman
  • Patent number: 3963412
    Abstract: By providing a spark wheel with its side, thumb, rotation-inducing discs forming part of a unitary, one-piece member, a unique and extremely useful spark and thumb wheel unit is achieved. Furthermore, this unique construction incorporates mounting pins having varying diameters in order to facilitate and provide for mechanical assembly of the spark and thumb wheel unit in position.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: June 15, 1976
    Inventor: Stephen Peter Chernock