Static Pencil Sharpener Patents (Class 30/451)
  • Patent number: 11273666
    Abstract: The present invention is a pencil sharpener or the like such as a makeup pen. It uses two handles similar to a pair of pliers. In one configuration, pressing the two handles advances oblique sharp tip blades which cut through the wood and core of a pencil. The result is that the pencil is sharpened in one press of the handles. The second configuration has even number of blades. With two blades, it requires the handles to be pressed a second time after manually rotating the pencil 90 degrees. With 4 blades, each two opposing blades cut through the pencil in half the pressing interval. With 6 blades, each two opposing blades cut through the pencil in one third the pressing internal, and so on.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: March 15, 2022
    Inventor: Samir Moufawad Moufawad
  • Patent number: 10632781
    Abstract: Devices, kits, and methods for making a carved crayon are provided. In one aspect, a crayon carving device includes a base, a pantograph armature coupled to the base, a crayon positioner, and at least one guide template parallel to the crayon positioner. The pantograph armature includes a motorized drive shaft with a drill tip for carving an outside surface of a crayon body, as well as a guide tip for tracing along a guide template that directs where the drill tip carves. In some embodiments, the guide template includes a stationary bridge support and a plurality of removable carving bucks that insert into one of multiple openings on the bridge support. The surface features of each of the carving bucks may be traced by the guide tip to generate a corresponding carving on the surface of a crayon body.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: April 28, 2020
    Assignee: Crayola LLC
    Inventors: Scott Collins, Douglas A. Brand, Robert J. Henry, Thomas R. Rau
  • Patent number: 8979441
    Abstract: In one embodiment of the present invention, a power tool includes a housing having a first opening formed therein with a motor being contained within the housing. The tool includes a device for sharpening a writing implement. The sharpening device is at least partially contained within the housing and accessible through the first opening which permits the writing implement to be inserted into the sharpening device. The sharpening device is operatively connected to the motor such that operation of the motor drives the sharpening device.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: March 17, 2015
    Inventors: Stanley Rozycki, Donald Nordstrom
  • Patent number: 8881410
    Abstract: A sharpener for sharpening a pencil, in particular a cosmetic pencil, is especially suitable, when used correctly, for producing a particularly uniform outer jacket edge in the region of the pencil tip. The sharpener includes a sharpener body, in which a pencil guide channel is provided. The pencil guide channel has a circular cone-shaped channel section and opens out in a pencil inlet opening on the outer side of the sharpener body. A paring blade is positioned tangentially to the lateral surface of the channel section. The paring blade serves to pare off a pencil tip, which includes a front lead section and a rear outer jacket section. A shaping tool cuts a shoulder into the pencil tip, the shoulder being set back in relation to a circular cone-shaped enveloping surface of the pencil tip. The shaping tool is arranged relative to the pencil guide channel to insert the shoulder into the transition between the lead section and the outer jacket section of the pencil tip.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: November 11, 2014
    Assignee: KUM Limited
    Inventor: Fritz Luettgens
  • Patent number: 8708619
    Abstract: In one embodiment of the present invention, a power tool includes a housing having a first opening formed therein with a motor being contained within the housing. The tool includes a device for sharpening a writing implement. The sharpening device is at least partially contained within the housing and accessible through the first opening which permits the writing implement to be inserted into the sharpening device. The sharpening device is operatively connected to the motor such that operation of the motor drives the sharpening device.
    Type: Grant
    Filed: July 10, 2010
    Date of Patent: April 29, 2014
    Inventors: Stanley Rozycki, Donald Nordstrom
  • Publication number: 20140075681
    Abstract: A pencil-sharpener tool for carpenter pencils includes a housing, a pencil-tip-insertion hole, and a hex-bit-drive hole. The pencil-tip-insertion hole may configured in to receive a portion of a carpenter pencil. The hex-bit-drive hole may extend at least partially through the housing opposite the pencil-tip-insertion hole. The hex-bit-drive hole may also be in axial alignment with the pencil-tip-insertion hole and the central axis of the housing. The housing, the pencil-tip insertion hole, and the hex-bit-drive hole may be in fixed relation to each other, and may move in unison when the hex bit is inserted inside the hex-bit-drive hole and rotates clockwise or counterclockwise.
    Type: Application
    Filed: November 26, 2013
    Publication date: March 20, 2014
    Inventor: Walter Hammer
  • Patent number: 8656600
    Abstract: An example adapter for converting a manual-pencil sharpener into a powered sharpener for carpenter pencils is described. The example adapter has a housing including two cavities. A first cavity is configured to receive a substantial portion of a manual-pencil sharpener for carpenter pencils therein. A second cavity extends in a lengthwise and axial position opposite the first cavity. The second cavity has a complementary shape and size configured to receive a substantial portion of a hex-bit therein.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: February 25, 2014
    Inventor: Walter F Hammer
  • Publication number: 20120233867
    Abstract: A pencil sharpener having a support and a main blade adapted to dispose and secure onto the support is disclosed which comprises an auxiliary blade adapted to dispose onto the support and secure thereonto by a screw and a corresponding nut. The auxiliary blade is further adapted to dispose on one side of the support opposite to the side where the main blade is disposed.
    Type: Application
    Filed: June 16, 2011
    Publication date: September 20, 2012
    Applicant: CHOON NANG ENERGY EQUIPMENT MFY., LTD.
    Inventor: Fat Wai Bill FONG
  • Patent number: 8225516
    Abstract: The present invention is a pencil sharpener having a hollow container having a sidewall, a closed bottom and a lid, a sharpening element being mounted on the lid, the lid having an opening below the sharpening element such that pencil shavings pass through the opening in the lid and into the hollow container.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: July 24, 2012
    Inventor: Joe Green
  • Patent number: 7908749
    Abstract: A sharpener for a stick-shaped cosmetic material comprises guide rails (3h) disposed in a longitudinal direction over a sliding surface (3d), and a continuous surface (3g) at an upper side of both surfaces. The sliding surface (3d) is formed in an acute inner angle shape as seen in the longitudinal direction for sliding a leading end portion of the cosmetic material thereon. The continuous surface (3g) constitutes an upper side of a blade with a cutting edge (3e) facing to a rear end edge of the sliding surface (3d) at a position slightly higher than the sliding surface (3d). A leading end portion of a stick-shaped cosmetic material feeding container (100) is guided by the guide rails (3h), thereby preventing the container (100) from being shaken.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: March 22, 2011
    Assignee: Tokiwa Corporation
    Inventor: Arata Sasaki
  • Patent number: 7886395
    Abstract: A pencil sharpener case has a rotatable cover which covers a mechanical pencil sharpener. In one position, the cover may be rotatably retracted to provide access to the pencil sharpener. The case also mounts an eraser which may be used when the pencil sharpener is covered.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: February 15, 2011
    Assignee: Acme United Corporation
    Inventors: Stuart David Farnworth, Jonathan A. Lee, Javier Verdura
  • Patent number: 7743515
    Abstract: A pencil sharpening device having a container with a closed bottom, a sidewall, and an open top, a support member received with the container, a lid with a central aperture releasably secured to the container to close the open top, and a sharpening element mounted to the support member and extending upwardly and through the aperture of the lid.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: June 29, 2010
    Inventor: Joe Green
  • Patent number: 7523557
    Abstract: A carpenter's pencil sharpener is designed for cutting a point on a carpenter's pencil that defines a longitudinal axis and has a maximum width or dimension (MD) perpendicular to the longitudinal axis. The sharpener has a contouring portion defining a rotational axis, a pencil point contour surface and a blade. The sharpener also has a centering portion at least rotationally fixed to the contouring portion. The centering portion has a non-rotating, cylindrical, inner surface and an outer end defining an aperture for receiving the carpenter's pencil. The cylindrical surface has an inner diameter (ID) dimensioned to fit the maximum dimension (MD) of the carpenter's pencil, and is large enough to permit rotation of the carpenter's pencil within the cylindrical surface. The centering portion also has a length (L) generally parallel to the rotational axis and measured from the contouring portion to the outer end for maintaining the carpenter's pencil parallel to the axis.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: April 28, 2009
    Assignee: Flade LLC
    Inventors: Craig W. Smith, Joseph Donaldson
  • Publication number: 20090071018
    Abstract: A carpenter's pencil sharpener is designed for cutting a point on a carpenter's pencil that defines a longitudinal axis and has a maximum width or dimension (MD) perpendicular to the longitudinal axis. The sharpener has a contouring portion defining a rotational axis, a pencil point contour surface and a blade. The sharpener also has a centering portion at least rotationally fixed to the contouring portion. The centering portion has a non-rotating, cylindrical, inner surface and an outer end defining an aperture for receiving the carpenter's pencil. The cylindrical surface has an inner diameter (ID) dimensioned to fit the maximum dimension (MD) of the carpenter's pencil, and is large enough to permit rotation of the carpenter's pencil within the cylindrical surface. The centering portion also has a length (L) generally parallel to the rotational axis and measured from the contouring portion to the outer end for maintaining the carpenter's pencil parallel to the axis.
    Type: Application
    Filed: November 18, 2008
    Publication date: March 19, 2009
    Applicant: FLADE LLC
    Inventors: Craig W. Smith, Joseph Donaldson
  • Patent number: 7497756
    Abstract: A miniature toy vehicle serviceable as an eraser and a pencil sharpener is primarily composed of a chassis and a housing combined thereto. A sharpener base for being screwed with a blade is provided at an appropriate position on the chassis, while a cone hole is provided at the side of the sharpener base for receiving a pencil to be sharpened. The front end and the rear end of the chassis are provided with respective wheel axles, the two ends of which are provided with tires, while a driving device is combined to the front or rear wheel axle, for moving on a plane. The housing is made of an eraser material, the side of which has a through hole corresponding to the shape of the cone hole at the sharpener base, thereby the housing can be combined to the chassis to form a toy vehicle.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: March 3, 2009
    Inventor: Chieh-Yuan Wu
  • Publication number: 20080190788
    Abstract: The container stores and dispenses writing instruments. The container has a modular capability such that sets of writing instruments may be easily removed and distributed separate from the container. In this way, the writing instruments may be quickly dispersed to groups of individuals. The modular capability is achieved through the use of components, such as bins, for storing the writing instruments that are removably stored within the container. For example, a sharpener is also provided for sharpening writing instruments. The sharpener may be removably disposable within a bin and may have a truncated generally pyramidal shape. The sharpener may comprise a plurality of apertures for receiving writing instruments for sharpening. The sharpener may be disposed within the container similar to the writing instrument bins.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 14, 2008
    Applicant: Crayola LLC
    Inventor: David A. Cziraky
  • Publication number: 20080163499
    Abstract: Pencil sharpener with replaceable decorative housing with a standard pencil sharpener and a pencil sharpener housing. The housing comprised of two halves. The housing having retaining brackets within the halves that position the pencil sharpener accurately within the housing so that the pencil entrance portion of the pencil sharpener is aligned with an aperture in the housing. The housing halves held together in a way that allows easy separation without tools such as a magnetic closure. A preferred embodiment includes a housing platform that allows the housing to rest securely on a flat surface. A preferred embodiment includes a label holding portion so that the housing stand can be customized with an appropriate label such as “one sharp teacher”, or “one sharp baseball player” or other sayings that relate to the shape of each the pencil sharpener housing.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 10, 2008
    Inventor: Catalina M. Ojeda
  • Patent number: 6976314
    Abstract: A sharpener for sharpening soft-core pencils, especially those used in the medical or pharmaceutical field, includes a housing; and a shaping componentry, received by the housing, for shaping and sharpening a medical or pharmaceutical pencil. The shaping componentry contains a cleaning agent to thereby disinfect the pencil.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: December 20, 2005
    Assignee: KUM Limited
    Inventor: Fritz Lüttgens
  • Patent number: 6966117
    Abstract: A carpenters pencil sharpener having a body member having a T-shaped opening in its front wall. The body member has an interior pencil sharpening chamber having respective left and right upper support platforms and respective left and right lower support platforms. There are respective left and right upper ramps that extend inwardly from the T-shaped opening to the respective left and right upper support platforms. There are also respective left and right lower ramps that extend inwardly from the T-shaped opening to the respective left and right lower support platforms. A transversely extending blade member has a rearwardly extending cutting edge that extends into the interior pencil sharpening chamber. The T-shaped opening of the pencil sharpener allows a carpenters pencil to be inserted at four different 90 degree positions in order to sharpen the four different sides of the carpenters pencil.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: November 22, 2005
    Inventor: Jeffrey C. Cannon
  • Patent number: 6799374
    Abstract: A portable pencil sharpener, for use upon a belt, in sharpening pencils, having a housing having a top having a top opening, a rear, and defining an internal cavity. A belt clip is located on the rear to facilitate attachment to the belt. A motorized sharpener assembly is located within the housing for automatically sharpening a pencil when inserted through the top opening. A power pack is located within the housing and has batteries for powering the motorized sharpener assembly. A charging plug and charging circuit allow the batteries to be recharged for subsequent use.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: October 5, 2004
    Inventors: Robert Goldstein, Leslie Goldstein
  • Patent number: 6698100
    Abstract: A combination contractor's pencil sharpener and retainer includes a sharpener having a body member which is inserted through a retainer loop mounted on a plate. The plate is attached to a contractor's tool belt, tool case or the like. The sharpener is retained by a U-shaped spring member which engages against a retention flange associated with the sharpener.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: March 2, 2004
    Assignee: Travel Caddy, Inc.
    Inventor: Wang Yan
  • Publication number: 20040010927
    Abstract: A sharpener for sharpening soft-core pencils, especially those used in the medical or pharmaceutical field, includes a housing; and a shaping componentry, received by the housing, for shaping and sharpening a medical or pharmaceutical pencil. The shaping componentry contains a cleaning agent to thereby disinfect the pencil.
    Type: Application
    Filed: November 25, 2002
    Publication date: January 22, 2004
    Applicant: KUM Limited, IE - Trim, Co.
    Inventor: Fritz Luttgens
  • Patent number: 6571480
    Abstract: A hand-operable and portable pencil sharpener which is comprised of a housing having a conical cavity therein. The cavity is of circular cross-section and defines an open inlet end tapering to a narrow inner end. A collar is provided about the open inlet end and formed integral with the housing. A pencil centering insert is rotatably secured in the collar by a flexible and removable snap ring. A slot is provided along the side wall of the conical cavity and a blade having a,sharp edge is secured adjacent to the slot with the sharp edge projecting slightly into the cavity whereby to shave a portion of the wood and lead on the extremity of a carpenter's pencil rotated in the conical cavity and centered by a centering slot in the pencil centering insert. An abrading element is secured to the housing to permit the abrading of a sharp point on the end of the lead.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: June 3, 2003
    Assignee: Royal International Corp.
    Inventor: Jianping Qiu
  • Publication number: 20030014870
    Abstract: A sharpener, in particular for a soft-core pencil, has a sharpener housing with a sharpener channel that opens out into a free space via a channel opening. The sharpener has a sharpener blade that is positioned tangentially against the channel opening. The invention provides a magnifying glass for optically enlarging a core formation in the region of the channel opening and/or in the free space.
    Type: Application
    Filed: January 31, 2002
    Publication date: January 23, 2003
    Inventor: Fritz Luttgens
  • Publication number: 20020005100
    Abstract: The present invention is for an improved pencil sharpener that is slidingly disposed about a pencil. The pencil sharpener comprises a cutting surface, a first arm pivotally mounted or connected with respect to a second arm, and a pencil receiving variable-sized aperture formed through the interior of the first arm and the second arm. The variable-sized aperture preferably alters in size and/or shape depending on the pivotal position of the first arm with respect to the second arm. The pencil receiving variable-sized aperture preferably forms a substantially conical channel when the first arm and the second arm are compressed inwardly for sharpening the pencil. In another position of the arms, the variable sized aperture permits the pencil to slide through the pencil sharpener.
    Type: Application
    Filed: June 20, 2001
    Publication date: January 17, 2002
    Inventors: Carroll Vernon Lawson, Hans P.U. Verswijver
  • Publication number: 20010052188
    Abstract: The holding device for a pencil sharpener (8) is a molded body (21), which can be fitted so as to be detachable from one pencil end (7, 13) onto a pencil, in the manner of a cap (17) that grips around the pencil shaft (4). It contains or consists of a rubber-elastic material and is furthermore provided with a holding projection (20), which can be inserted frictionally adhering, but detachable, into the pencil guiding channel (9) of the sharpener (8) (FIG. 1).
    Type: Application
    Filed: January 26, 2001
    Publication date: December 20, 2001
    Inventor: Fritz Luttgens
  • Patent number: 6286218
    Abstract: A sharpener contains a housing having a receiving channel for a pencil which is to be sharpened. The sharpener is intended to be seated as a protective cap, when the pencil is not in use, with a clamping fit on the pencil circumference. The clamping connection necessary for this purpose is an external clamping-force producer which can be removed manually from acting on the housing, in particular a cleaning stick, with, for the purpose of providing the clamping force, is for example a pressure-exerting lug in the form of a wedge or with an eccentric.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: September 11, 2001
    Assignee: KUM Limited
    Inventor: Fritz Lüttgens
  • Patent number: 6256892
    Abstract: A carpenter's pencil sharpener for sharpening carpenter's pencils is disclosed. The pencil sharpener comprises a housing having both a vertically oriented oval shaped bore and a horizontally oriented oval shaped bore extending therethrough. The oval shapes of the bores corresponds to the profile of a carpenter's pencil. The bores are parallel and aligned with respect to each other. A cutting edge resiliently extends at an angle into the path of the bores. The angle of the cutting edge being adapted to allow a carpenter's pencil to be slid within said bore when inserted therein but whittling a carpenter's pencil when withdrawn therefrom.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: July 10, 2001
    Inventor: Richard E. Gillson
  • Patent number: 5845406
    Abstract: A sharpener for a soft core pencil having a pencil end to be sharpened, the pencil end including a free core end, the sharpener comprising a housing defining: a guide conduit therein for receiving the pencil end to be sharpened; and a hollow space adjacent to and in communication with the guide conduit for surrounding the free core end of the pencil during sharpening thereof.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: December 8, 1998
    Assignee: KUM GmbH & Co. KG Kunststoff- und Metallwarenfabrik
    Inventor: Fritz Luttgens
  • Patent number: 5599123
    Abstract: The present invention is a combined pencil sharpener and pencil stowage apparatus. The invention comprises a body, a pencil stowage compartment formed within the body for containing a tip of a pencil, and a separate pencil sharpener compartment formed within the body, the pencil sharpener compartment containing a pencil sharpener. Unlike previous inventions, the present invention provides a single body that has these two separate pencil stowage and pencil sharpener compartments formed therein. The pencil stowage compartment and pencil sharpener compartment are preferably positioned in a parallel relationship to minimize the length of the pencil/apparatus when the pencil is stowed in the apparatus, therefore making it easy to be stored in the user's pocket.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: February 4, 1997
    Inventor: David W. Still
  • Patent number: 5161587
    Abstract: The present invention is directed to a pencil sharpener that incorporates a conductive sharpening blade element for sharpening the pencil wherein the blade element is positioned along an inner wall surface of a bore hole so as to contact an outer surface of the pencil. A conductive leaf spring opposingly positioned with the blade element contacts a nib of a pencil when the pencil is sharpened by the blade element, whereby the leaf spring forms an electrical contact with the blade element through the nib of the pencil. An integrated circuit sound device for producing an audible signal is operatively connected with the blade element and leaf spring so as to generate warning signals through an indicating lamp and a buzzer.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: November 10, 1992
    Inventor: M. H. Wu
  • Patent number: 5077903
    Abstract: A carpenter's pencil sharpener for use in sharpening rectangularly shaped carpenter's pencils is disclosed wherein at the top of the housing the pencil sharpener is situated two rectangularly shaped openings juxtaposed to each other, the first a longitudinal opening and the second a transverse opening. Immediately below each of the pencil openings are a pair of oppositely driven rotary cutter assemblies. Each rotary cutter assembly is stepped, having a large diameter cylindrical cutting head mounted upon a shaft with a small diameter cylindrical cutting head juxtaposed to it, both on the same shaft. The two large diameter cutting heads receive the long side of the carpenter's pencil through the longitudinal opening to fashion an elongated point upon the pencil. The two small diameter cylindrical cutting heads receive the short sides of the carpenter's pencil through the transverse opening to chamfer the short sides. By interconnecting gears, an electrical motor rotates the rotary cutter assemblies.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: January 7, 1992
    Inventor: Erich P. Kreim
  • Patent number: 5040256
    Abstract: A combination tape measurer, pencil sharpener and knife blade sharpener is provided. The pencil and knife blade sharpeners are provided on a separate insert that is fitted onto the tape measurer. This allows each component to be used without interfering with the others. A conventional retractable tape measurer can be modified to produce the resultant combination tool.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: August 20, 1991
    Inventor: Norman T. Mills
  • Patent number: 5002182
    Abstract: Resilient fingers extend from one end of the crayon holder whereby a crayon may be pushed forward by a push rod to project beyond the fingers. A sleeve is slidable on the fingers to clamp the crayon in adjusted position, the sleeve being movable between outstanding flanges on the ends of the fingers and a shoulder on the holder at the opposite ends of the fingers. One form of container for a plurality of crayons in their individual holders has a push rod holder in the bottom of the container and a crayon sharpener mounted in a cover for the container. Another form of container has a push rod holder in the cover and no sharpener.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: March 26, 1991
    Inventor: Dale W. McGinnis
  • Patent number: 4961451
    Abstract: Power operated sharpener for nonconic rectangular pencils has single, orbital, weight-balanced cylindrical milling cutter which follows orbital path set by the track of an eliptical internal gear. The cylindrical milling cutter is carried loosely upstanding within an elliptic conic space rising from the track, so as to accommodate the rectangular shape of the workpiece. In operation the sharpener puts a taper on each of the four sides of the end of a rectangular pencil.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: October 9, 1990
    Inventor: Albert W. Bucci
  • Patent number: 4761885
    Abstract: A conventional means for sharpening leads consists of a flat stick covered with abrasive paper strips that do not prevent lead residue from falling out onto desks, equipment, hands and drawings. Cone shaped lead sharpeners are known but when used for compass leads, they are most easily used if held substantially horizontally and of which circumstances the residue of the pencil lead dust and the like still spills out. The present device includes a fixed, inverted truncated sharpening cone held in a container by means of a retainer ring having a residue trapping collar formed under the ring and adjacent the upper end of the sharpening cone. This residue then falls downwardly into the open based cone into the base of the container when placed in the upright storage position.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: August 9, 1988
    Inventor: Colin W. McMillan
  • Patent number: 4593468
    Abstract: Stationary apparatus presenting a combination memo pad holder and pencil sharpener assembly. The apparatus generally comprises a main housing having a compartment for insertion of a note pad therein. Flanges on the sharpener assembly releasably engage tracks on the housing so as to position the assembly in a first position if the apparatus is used on a desk top and a second position if the apparatus is attached to a wall or the like. The offset positions of the sharpener assembly enables a pencil to be inserted therein in a ready-for-use position.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: June 10, 1986
    Inventor: Robert R. Vincent