Work Guard Patents (Class 451/457)
-
Patent number: 11566298Abstract: Methods and masks for manufacturing component of gas turbine engines are described. The methods include applying a mask to a protected surface of the component, the component having a designated surface to be treated by a shot peen operation. The mask includes a full masking portion configured to prevent a shot peen media from impacting the protected surface. A masking control region is arranged around the designated surface. The masking control region is configured to control an amount of force imparted to the component by shot peen media during the shot peen operation, wherein the masking control region extends from the full masking portion to the designated surface. The designated surface is shot peened with shot peen media to form a compressive stress region within the component proximate the designated surface and a tapering transition of compressive forces within the component proximate the masking control region.Type: GrantFiled: May 8, 2019Date of Patent: January 31, 2023Assignee: RAYTHEON TECHNOLOGIES CORPORATIONInventors: Derek T. Welch, Nikhil Mehta
-
Patent number: 8961272Abstract: A grinding device is specified, comprising a housing in which a tool spindle for driving a tool is mounted, comprising a protective hood which can be locked on the housing, and comprising means which allow the tool spindle and the protective hood to be locked. An actuating device is provided which is displaceable on the housing between a first position in which the tool spindle is released and the protective hood is locked against rotation and a second position in which the tool spindle is locked against rotation and the protective hood can be adjusted in the angular position thereof on the housing.Type: GrantFiled: September 1, 2011Date of Patent: February 24, 2015Assignee: C. & E. Fein GmbHInventors: Arne Timcke, Winfried Biller, Oliver Stephan, Philipp Mueller
-
Patent number: 8777698Abstract: An abrading tool has a grinding disc mounted to the shaft of a motor, and a dust shroud which has a depending flange which extends over and about a periphery of the grinding disc, the dust shroud having a flattened segment, and a peripheral flexible and adjustable skirt which attaches to and extends beyond the depending flange.Type: GrantFiled: June 22, 2010Date of Patent: July 15, 2014Assignee: Advanced Posture Systems Pty. Ltd.Inventor: Peter O'Shannessy
-
Patent number: 8512104Abstract: A protective guard is provided for a hand-held power tool, in particular a hand-guided grinding machine. According to the invention, the tool is at least partially covered by the protective guard. The guard is supported in an elastically flexible fashion in the circumference direction of the bearing journal by means of a spring means that prestress locking elements of a locking mechanism in their engaged positions.Type: GrantFiled: November 12, 2008Date of Patent: August 20, 2013Assignee: Robert Bosch GmbHInventor: Attila Nagy
-
Patent number: 8454412Abstract: The invention is based on a handheld power tool, in particular a right-angle sander (10), having a gearbox (12), a flange neck (14) with a guard device (20), which device is receivable on the flange neck (14) and forms a receptacle region for a tool (18) and is rotatable in the circumferential direction (22), and having at least one detent device (24) for locking a rotary position of the guard device (20). It is proposed that the detent device (24) is at least partially integrated with the flange neck (14) of the gearbox (12).Type: GrantFiled: September 22, 2008Date of Patent: June 4, 2013Assignee: Robert Bosch GmbHInventor: Florian Esenwein
-
Patent number: 8454411Abstract: A hand-held power tool system has a hand-held power tool, a guard unit, and a guard anti-rotation lock unit configured to prevent rotation between the guard unit and the hand-held power tool in a case where a tool of the hand-held power tool breaks during intended operation. The guard anti-rotation lock unit also is configured to prevent rotation between the guard unit and the hand-held power tool at a same time as the guard unit is attached to the hand-held power unit, when the guard unit is in a working position. Preferably, the guard anti-rotation lock unit is at least partially located on a closing unit which includes a clamping band and a pivotable lever. The anti-rotation lock unit preferably includes an anti-rotation lock element provided on the lever.Type: GrantFiled: May 29, 2012Date of Patent: June 4, 2013Assignee: Robert Bosch GmbHInventors: Cornelius Boeck, Joachim Schadow, Sinisa Andrasic
-
Patent number: 8403730Abstract: A grinder can include a stopper projection provided to a grinding stone cover and position a stopper abutting portion on a side of a gear housing in order to restrict a position adjustable range through abutment of the stopper projection to the stopper abutting portion in a position where the grinding stone cover has rotated in a rotational direction of the grinding stone by a set angle.Type: GrantFiled: October 10, 2008Date of Patent: March 26, 2013Assignee: Makita CorporationInventors: Fumitoshi Numata, Hirokazu Kimata
-
Publication number: 20130029562Abstract: A damage prevention tool and method is provided in which a free-floating disk is connected to an abrasion disk through a bearing structure. When the tool is actuated, the abrasion disk rotates substantially independent of the floating disk. The floating disk may have a slightly larger circumference and a non-marring friction material on its outer edge, such that the outer edge does not damage foreign objects and protects the abrasion disk, and the abrasion material mounted to the abrasion disk, from contacting foreign objects.Type: ApplicationFiled: June 19, 2012Publication date: January 31, 2013Applicant: OMNI CUBED, INC.Inventors: Theodore J. McFadden, Cameron L. DeMille, Larry L. Livingston, JR.
-
Patent number: 8303380Abstract: A head for an orbital abrading machine comprising a housing, a shroud including inner and outer portions, defining a chamber between the inner and outer portions, a drive means for driving an abrading pad, the drive means at least partially enclosed by the housing and the shroud, wherein the drive means produces an exhaust which is directly vented into the chamber without leaving the head, and wherein the chamber includes at least one opening for directing the exhaust toward the abrading pad for cooling the pad with the exhaust.Type: GrantFiled: January 26, 2010Date of Patent: November 6, 2012Assignee: Dynabrade, Inc.Inventor: Frank Lehman
-
Patent number: 8282447Abstract: An adaptive dust shield for rotary grinders having a bearing housing and an axial groove around the bearing housing. The dust shield has a cover and a plurality of upstanding flexible fingers, in multiples of four, which extend upward from and around the top of the cover. These flexible fingers have a defined width and are separated apart from each other defining a space between each one of the flexible fingers. The width of the space is less than the defined width of the flexible fingers. A stretchable fitting ring fits onto the bearing housing of the grinder and into the flexible fingers. The flexible fingers are secured onto the stretchable fitting ring by a securing fastener. Tightening the securing fastener over the flexible fingers compresses them into the stretchable fitting ring and the stretchable fitting ring into the groove of the bearing housing of the grinder forming a secure attachment.Type: GrantFiled: April 14, 2009Date of Patent: October 9, 2012Inventor: John Buser
-
Patent number: 8231439Abstract: A brush gate accessory for a faceting machine splash pan including a mounting bracket having an arcuate cross-member interconnecting first and second attachment arms, each of the first and second attachment arms defining a clip about their free for retaining the brush gate in place over a sidewall of a splash pan, and first and second opposing brushes removably attached to the first and second attachment arms, respectively, the brushes together substantially filling a space defined between the arms from the cross-member to the free ends of the arms.Type: GrantFiled: January 29, 2010Date of Patent: July 31, 2012Inventor: Gabriel William Dobo
-
Patent number: 8231436Abstract: A hand-held power tool system has a hand-held power tool, a guard unit, and a guard anti-rotation lock unit preventing rotation between the guard unit and the hand-held power tool during breakdown of a tool of the hand-held power tool and configured to prevent rotation between the guard unit and the hand-held power tool at a same time as the guard unit is being attached to the hand-held power unit when the guard unit is in a working position, the guard anti-rotation lock unit is at least partially located on a closing unit which includes a clamping band and a pivotable lever, and the anti-rotation lock unit includes at least one anti-rotation lock element provided on the lever.Type: GrantFiled: October 17, 2011Date of Patent: July 31, 2012Assignee: Robert Bosch GmbHInventors: Cornelius Boeck, Joachim Schadow, Sinisa Andrasic
-
Patent number: 8221197Abstract: The invention relates to a portable power tool system comprising a portable power tool (12a-n), especially an angle grinder, a protective hood unit (14a-n) and a protective hood anti-rotation lock (16a-n) for providing anti-rotational locking between the protective hood unit (14a-n) and the portable power tool (12a-n) in the event of a breakage of a tool (18a-n). According to the invention, the protective hood anti-rotation lock (16a-n) is adapted to provide anti-rotational locking between the protective hood unit (14a-n) and the portable power tool (12a-n) while at the same time securing the protective hood unit (14a-n) to the portable power tool (12a-n) in a working position of the protective hood unit (14a-n).Type: GrantFiled: November 9, 2007Date of Patent: July 17, 2012Assignee: Robert Bosch GmbHInventors: Cornelius Boeck, Joachim Schadow, Sinisa Andrasic
-
Patent number: 8137164Abstract: A guard device (10) for handheld power tools with a disklike and rotating tool (12) includes a base body (14) formed by a platelike element (30) having a semicircular embodiment formed as a peripheral region (32). A guard rim is disposed on the peripheral region (32) and has a portion (36) oriented perpendicular to the platelike element (30) and a further portion (38) oriented parallel to the platelike element (30). An energy absorption element (16) is coupled to the base body (14) via a coupling and located between the portion (38) and the platelike element (30). The coupling is embodied fixedly in normal operation and enables in an emergency mode enables a rotary motion of the energy absorption element (16) relative to the base body (14).Type: GrantFiled: June 6, 2008Date of Patent: March 20, 2012Assignee: Robert Bosch GmbHInventors: Cornelius Boeck, Joachim Schadow
-
Patent number: 8133094Abstract: A vacuum shroud for an angle grinder includes a removable hatch for grinding in a corner and provides a storage location on the shroud for the hatch in order to encourage use of the hatch when not grinding in a corner.Type: GrantFiled: January 21, 2009Date of Patent: March 13, 2012Assignee: Dust Collection Products, LLCInventors: Michael Loveless, Spencer Loveless, Ryan Anderson
-
Patent number: 8038514Abstract: A milling tool includes a cylindrical base and a plurality of abrasive grain clusters. The cylindrical base is centrally formed with a through-hole, and has an annular surface extending around the through-hole, a peripheral surface extending perpendicularly to the annular surface, and an inclined or rounded surface connecting the annular and peripheral surfaces. The annular surface is formed with a circular recess groove coaxially with the through-hole for separating the annular surface into first and second planar areas that respectively are closer to and farther from the peripheral surface. The second planar area is higher than the first planar area. Abrasive grains are brazed on the annular surface. The abrasive grain clusters are brazed on the inclined surface at predetermined intervals, each cluster including a predetermined number of abrasive grains having substantially the same diameter, each cluster being positioned substantially on a circumference almost equidistant from one another.Type: GrantFiled: April 23, 2009Date of Patent: October 18, 2011Assignees: Noritake Super Abrasive Co., Ltd., Noritake Co., LimitedInventors: Yasuhiro Hidai, Naoki Toge, Shizuka Ishii
-
Patent number: 8006727Abstract: A hood assembly for woodworking equipment, the hood assembly having a main frame member, at least one secondary frame member, a hood member, and first and second mounting members. Each secondary frame member is supported relative to the main frame member. The hood member is supported by the main frame member and the at least one secondary frame member. The main frame member is supported by the first and second mounting members. The main frame member and the at least one secondary frame member support the hood member such that the hood member extends over at least a portion of the woodworking equipment.Type: GrantFiled: March 23, 2009Date of Patent: August 30, 2011Assignee: Fastcap, LLCInventors: Marc Urban, Paul Akers
-
Publication number: 20110017030Abstract: A universal cutting tool for use on the arm of a robot, the universal cutting tool comprising: a cutter head comprising a housing adapted for attachment to the arm of a robot, an electric motor secured to the housing and comprising a drive shaft, and a grinding wheel connected to the drive shaft; a power supply; and control electronics for operating the electric motor, the control electronics connecting the power supply to the motor; wherein the control electronics are adapted to monitor the level of current drawn by the electric motor and to monitor the speed of rotation of the drive shaft.Type: ApplicationFiled: January 19, 2010Publication date: January 27, 2011Inventor: Paul Chambers
-
Publication number: 20100197207Abstract: A chemical mechanical polishing apparatus includes a container, a platen, first and second brushes, a polishing pad, a carrier, and a slurry supplier. The container has a bottom wall and a side wall. The side wall has an inwardly-extending upper portion. The platen is supported over the bottom wall. The platen is positioned lower than the inwardly-extending upper portion. The first brush brushes the side wall. The first brush is fixed to a side surface of the platen. The second brush brushes a side surface of the platen. The second brush is fixed to the bottom wall. The polishing pad is attached to the platen. The carrier presses a workpiece to be polished against the polishing pad. The slurry supplier supplies a slurry onto the polishing pad.Type: ApplicationFiled: February 4, 2010Publication date: August 5, 2010Applicant: ELPIDA MEMORY, INC.Inventor: TOSHIYA SAITO
-
Patent number: 7412999Abstract: The present invention relates to a hand held label removal apparatus, which provides a safe and easy removal of otherwise hard to remove labels that are affixed to various types of containers such as carton packaging, plastic products and similar materials. The distinctive features of the device include high productivity, the ability to remove various parts of the label as well as the label in its entirety, is completely safe and ecologically harmless. The invention comprises of a flat grinding circlet or a face mill, which is put in a circular motion by an electric motor. The design of the invention ensures that the area of the label that is being processed is insulated from the outside environment and byproducts formulated as a result of the label removal process are evacuated by the vacuum method such as a standard vacuum cleaner hose connected to a vacuum cleaner.Type: GrantFiled: May 16, 2005Date of Patent: August 19, 2008Inventors: Matvey Zelmanovich Lvovskiy, Simon Iokhvidson
-
Patent number: 7251887Abstract: A tool for limiting a cut on an impeller having a shaft and vane is provided. The tool includes a shield member having a sidewall, a top, and an inner cavity. The tool also includes a first cut opening extending through the hub sidewall to the shield member inner cavity, the shield member configured to matingly receive the impeller shaft into the shield member inner cavity and position at least a portion of the impeller shaft proximate the at least one cut opening to expose the portion of the impeller shaft for grinding.Type: GrantFiled: December 4, 2003Date of Patent: August 7, 2007Assignee: Honeywell International, Inc.Inventors: Thomas J. Tench, Jr., William J. Clayton, Nguyen X. Nghiem
-
Patent number: 7223163Abstract: A cover device for partially covering a disc-shaped working tool includes a bearing member (22) forming a receiving space (54) for receiving the shielding member (10) of the working tool and having an inner surface (24) against which an outer surface of the shielding member (10) lies when received in the receiving space (54), and a pivot member (48) supported on the bearing member (22) for a pivotal movement about a pivot axis (S1) between a locking position in which the receiving space (54) is limited at both ends in tangential and axial directions and is at least partially limited outwardly in a radial direction, and an open position in-which the receiving space (54) is open in at least one of the axial direction and the tangential direction.Type: GrantFiled: September 20, 2005Date of Patent: May 29, 2007Assignee: Hilti AktiengesellschaftInventors: Michael Neumeier, Rolf Spangenberg
-
Patent number: 7137873Abstract: A grinding method is provided which can grind a processing surface of a workpiece by a blast processing without use of specific abrasives to obtain a glossy surface such as a mirror surface. Abrasives together with compresses fluid are injected to the processing surface of the workpiece with an incident angle ? to meet the condition shown in the following equation: 0<V·sin ??½·VEquation 1; V=speed of the abrasive in an injection direction ?=incident angle of the abrasive to the processing surface of the workpiece.Type: GrantFiled: June 22, 2004Date of Patent: November 21, 2006Assignee: Fuji Manufacturing Co., Ltd.Inventors: Keiji Mase, Shozo Ishibashi
-
Patent number: 6910959Abstract: A fixture (1) for guidance of a tool having a cutting edge with respect to the periphery of a rotating grinding or polishing wheel (2), comprising a frame structure that runs along the periphery (6) of the wheel and has a guide formed as a slot (17) with an open other end, the slot providing a support surface (19) that is sloping relative to the radius of the wheel, and the inner end of the slot terminating radially within the periphery of the wheel on each side thereof, the fixture (1) in one end supported (11) for pivoting motion in a main plane of the wheel and in the other end carrying a separate balance weight (12).Type: GrantFiled: May 15, 2002Date of Patent: June 28, 2005Inventor: Tore Eklund
-
Patent number: 6893334Abstract: A guard for a rotary cutting tool allows for automatic adjustment of the guard relative to the cutting disc and to a workpiece. Such an automatic adjustment allows a user to cut around substantially the entire circumference of a rounded workpiece, such as a pipe, without requiring alteration of the angle at which the tool is held, repositioning by the user, or repositioning or removal of the guard. The guard includes a bracket for mounting the guard to the rotary cutting tool, a hood mounted to the bracket and enclosing a portion of the cutting disc, and a spring for biasing one end of the hood into substantially continuous contact with the workpiece during operation of the rotary cutting tool.Type: GrantFiled: January 24, 2003Date of Patent: May 17, 2005Inventor: J. David Stivers
-
Patent number: 6846231Abstract: A sharpening attachment for a powered rotary hand tool of the type which has an output shaft with a tool bit holder that extends from a housing is disclosed. The sharpening attachment is mounted on the housing and comprises a body portion with an interior opening through which a sharpening bit held by the tool bit holder can pass, with the sharpening bit being exposed for engaging a surface of a tool. The attachment has a jaw portion attached to the body portion which extends forwardly thereof and also has a support surface for holding the tool member at a predetermined angle relative to the sharpening bit, and an extension attached to the body portion and extending forwardly thereof at least to a point that includes a major portion of the exposed portion of the sharpening bit for the purpose of providing a protective guard.Type: GrantFiled: February 1, 2002Date of Patent: January 25, 2005Assignee: Credo Technology CorporationInventors: Allen M. Oles, Edward T. Prell, Frank O. Honold
-
Patent number: 6749495Abstract: A machine tool comprises a working area, closed by walls and a roof covering, in which a device for receiving a work piece is arranged, and a headstock with a main spindle is arranged, into which tools for machining the work piece can be clamped. Device and headstock are movable relatively to each other. In a front wall an opening lockable by a door leads into the working area. At least one part of the roof covering is movable between two positions in such a way that it locks the working area to the top in a first position and releases same to the top for loading in a second position.Type: GrantFiled: July 25, 2001Date of Patent: June 15, 2004Assignee: Stama Maschinenfabrik GmbHInventors: Peter Grund, Siegfried Schmid, Pavel Blazek, Walter Niederberger
-
Patent number: 6726554Abstract: A guide ring removal device. The guide ring removal device includes a column press, a first disc, a second disc, and a plurality of fasteners. The first disc is disposed on the column press. The second disc is disposed on a point of the column press to exert force on a carrier. The plurality of fasteners is disposed on the first disc, the fasteners grasping the guide ring. As the second disc exerts the primary force on the carrier, the fasteners generate reciprocal force on the guide ring, thus separating the guide ring. Engagement of the column press alters the distance between the first disc and the second disc, and the primary force is exerted on the carrier.Type: GrantFiled: June 12, 2003Date of Patent: April 27, 2004Assignee: Nanya Technology CorporationInventors: Chih-Kun Chen, Shan Chang Wang
-
Patent number: 6676498Abstract: A bi-directional grinder for allowing an operator to change the direction of rotation of the wheel, having a housing, a motor capable of bi-directional rotation, and a shaft. The grinding wheel is mounted on the shaft within a shroud and attached to the shaft with a locking mechanism. The shaft has a left threaded bottom portion and a right threaded bore therein. Once the grinding wheel is positioned on the shaft, a nut is tightened onto the threaded bottom portion of the shaft to tighten the wheel against the shoulder. A bolt with a broad head is inserted into the shaft bore so that the broad head is tightened against the nut. A spring loaded pin extends through the housing and is mateable with an off center transverse hole in the circular gear. When aligned, the pin may be inserted into the gear hole to cause the gear and shaft to cease rotation.Type: GrantFiled: February 22, 2002Date of Patent: January 13, 2004Inventor: Ronald Smith
-
Patent number: 6585578Abstract: A grinding wheel machine bracket comprises a fixations eat having a long through hole to receive a screw for fastening the fixation seat with a grinding wheel machine. The fixation seat has a pivoting seat with an axial hole, and a pointer located at the top thereof. A bracket seat is provided with a loading surface, a threaded hole, and an arcuate shoulder plate located over the threaded hole. A threaded rod is engaged with the threaded hole of the fixation seat via the axial hole. The bracket seat is changed in angle in relation to the fixation seat so as to adjust the angle of the loading surface of the bracket seat in relation to the grinding wheel of the grinding wheel machine. The bracket seat is fixed by the threaded rod at an angle so set.Type: GrantFiled: June 25, 2001Date of Patent: July 1, 2003Inventor: Jung-Hua Lin
-
Publication number: 20030040262Abstract: A method of drilling holes in an component, such as a turbine airfoil or bucket platform, the method including disposing a protective insert including a water jet blocking material adjacent a backside of the structure to be drilled and water jet drilling at least one hole in the structure, through to the backside. In one embodiment, the jet blocking material is comprised of carbide or a similar material that is more resistant to water jet drilling forces than the structure being drilled.Type: ApplicationFiled: August 27, 2001Publication date: February 27, 2003Inventor: Robert Henry Devine
-
Patent number: 6520838Abstract: A shield is placed next to a workpiece to form a passage therebetween. The workpiece and shield are rotated, and a stream of abrasive shot is blasted toward the spinning workpiece and shield to periodically enter the passage to selectively abrade the workpiece.Type: GrantFiled: June 25, 2001Date of Patent: February 18, 2003Assignee: General Electric CompanyInventor: James Stephen Shaw
-
Patent number: 6502589Abstract: The present invention broadly comprises a cleaning device for jewelry comprising a container having a top rim, side walls, and a bottom; a mesh liner operatively arranged to be removably secured within the container and proximate the side walls and bottom; a lid having an outer and inner surface, the lid operatively arranged to be secured to the top rim to seal the container; and, a foam member secured to the inner surface of the lid. The invention also includes a new method of cleaning and polishing jewelry, comprising the steps of immersing the jewelry in liquid cleaning solution contained in a foam-lined sealed container; and, agitating said cleaning solution. An alternative method includes a preliminary step of coating the jewelry to be cleaned with polishing compound prior to immersion.Type: GrantFiled: September 12, 2000Date of Patent: January 7, 2003Inventors: Shawn W. Fitzgerald, Jeremy E. Sharkey
-
Patent number: 6210261Abstract: The present invention, a tool safety shield, comprises a clip with at least one shield. The clip further comprises vent ribs. The shield extension further comprises a vacuum port. Both one piece and two piece embodiments are disclosed. The tool safety shield is attachable to a tool or to an adapter from the tool to the tool safety shield.Type: GrantFiled: November 5, 1999Date of Patent: April 3, 2001Inventor: James E. Johnson
-
Patent number: 6126529Abstract: A belt sander stabilizer for keeps a sander body and the portion of the sander belt that makes contact with the surface being sanded level during operation. The belt sander includes a shield having an upper panel and a pair of lateral sides that downwardly extend from side edges of the upper panel. A pair of support arms are pivotally coupled to the lateral sides and are adapted for engaging a surface to be sanded.Type: GrantFiled: June 10, 1999Date of Patent: October 3, 2000Inventor: Thomas Heyer
-
Patent number: 6109843Abstract: A shield assembly 98 is disclosed which has one or more shield elements 102, 104, 106 which block, during machining of a seal member 70 for a rotary machine 10, seal particles from entering a vane cluster 58. Various construction details are developed which increase the effectiveness of the shield assembly. In one embodiment, the shield assembly has an upper shield element 102 having a U-shaped cross sectional shape which fits over a stator assembly 28 that includes the seal member.Type: GrantFiled: July 2, 1999Date of Patent: August 29, 2000Assignee: United Technologies CorporationInventor: Samuel S. Descoteaux
-
Patent number: 5725419Abstract: An apparatus for removing excess material, such as spur bits or sprues, from workpieces, provided with a support surface having a guide channel therein for receiving excess material therein for guiding to a rotatably driven removal tool having a peripheral cutting or grinding segment submerged in a slot in the support surface and which is mounted for selective movements in parallel as well as normal to its rotational axis to allow adjustments to compensate for changes in the size or kind of tool as a result of wear or replacement. While not so limited in its application, the apparatus is of particular use for removing spur bits or sprues from workpieces.Type: GrantFiled: November 9, 1995Date of Patent: March 10, 1998Inventors: Erwin Osthoff, Horst Osthoff
-
Patent number: 5651727Abstract: There is disclosed herein an adapter system for use with a hand-held electrically-driven grinding tool, which rotatably drives a grinding wheel for removing grout or mortar from a work site. The adapter system is constructed to controllably deliver a liquid, usually water to the grinding wheel. The adapter system includes a valve assembly mounted to the tool body, which assembly includes: (1) a housing which defines an inlet and an outlet and (2) a shut off valve member positioned within the housing and between the inlet and outlet and operable from external of the housing to selectively provide and interrupt communication between the inlet and the outlet. There is also provided a supply conduit leading from a source and connected to the inlet for delivering liquid from the source to the valve housing inlet. A flexible delivery conduit is provided and connected to the valve housing and positionable adjacent to periphery of the grinding element.Type: GrantFiled: January 20, 1995Date of Patent: July 29, 1997Assignee: Hoffman & KlempererInventors: Peter L. Weinstein, James Allen, Jason M. Landborg, David Zimberoff
-
Patent number: 5462243Abstract: An aircraft passenger window maintenance shield is provided to form a protective barrier about an aircraft window to prevent damage to the area surrounding the window during a window outer pane external surface repair procedure involving rotary power equipment. Two generally rectangular panels each having a generally half-window shaped opening are slidingly interfit with one another and snap-fit onto the window frame in such a fashion as to form an aircraft window shaped opening in the area of the aircraft window. The two panels interfit such that a first overlapped edge of the first panel is overlapped by a second overlapping edge of the second panel, and a second overlapped edge of the second panel is overlapped by a first overlapping edge of the first panel. In this fashion, the rotary power equipment is not damaged by the panels, nor are the panels pulled apart by the action of the rotary power equipment.Type: GrantFiled: February 9, 1994Date of Patent: October 31, 1995Inventors: Raymond F. Hart, Michele A. Hart
-
Patent number: 5449317Abstract: A drilling, grinding, and shaping guidance assembly particularly suited for attachment to a precision jewelers' grinding and cutting handpiece. The guidance assembly is integrally attached or clamped on the jewelers' handpiece. The guide arms of the assembly have desirably shaped terminal portions adapted for engaging a workpiece which permits specific cutting or grinding tasks to be performed more accurately than can be performed without the guide arms.Type: GrantFiled: June 8, 1994Date of Patent: September 12, 1995Inventor: Karabet Takessian
-
Patent number: 5419736Abstract: A device for clearing material waste from telescopic plates of a cutting machine and includes an affixing element and a clearing rubber mounted to an underside of each telescopic plate. The affixing element has at least one groove to hold the clearing rubber which has a clearing edge and sliding surfaces. The clearing edge clears material waste from the upper surface of its adjacent plate, when the plates are retracted.Type: GrantFiled: March 28, 1994Date of Patent: May 30, 1995Inventor: Neng S. Lo