Internal Tool Is An Active Cutter Patents (Class 83/191)
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Patent number: 11396079Abstract: The present invention discloses an automatic grinding device for weld beading on the inner wall of a pipeline with a large length to diameter ratio. The automatic grinding device includes a supporting module, and a walking module, a working module and a control module which are arranged on the supporting module, where the walking module is used for moving the supporting module to the butt welding position of the pipeline; the working module is used for grinding the weld beading; and the control module is used for controlling the actions of the walking module and the working module. When the pipeline rotates along the axial direction, the position of the grinding device can remain at the bottom of the pipeline, rather than rotating together with the pipeline, and the elimination of weld beading on the whole circumference at the butt welding position of the pipeline is realized.Type: GrantFiled: December 16, 2019Date of Patent: July 26, 2022Assignee: Nanchang Hangkong UniversityInventors: Yuhua Chen, Timing Zhang, Yongde Huang, Shanlin Wang, Jinyang Hu, Lei Zhang, Xiangyi Wang, Jin Jiang
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Patent number: 8555503Abstract: A method for forming a valve includes forming a valve body; machining a bore by passing a tool having cutting edges along an axis into the valve body; machining a groove and face in the bore at axially spaced locations by revolving the tool about a circular circumference whose center is aligned with the bore; and supplying lubricant in a pneumatic stream through the tool to the cutting edges.Type: GrantFiled: July 20, 2011Date of Patent: October 15, 2013Assignee: Ford Global Technologies, LLCInventors: Michael J. Habel, Derek Kinch
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Publication number: 20130233139Abstract: A cutting tool for cutting pipe or the like from the inside out includes a housing assembly. A first blade actuating wedge assembly is inside the housing assembly and is movable along a longitudinal axis. The first blade actuating wedge assembly has multiple first tapered blade actuating wedges. Each cutting blade is supported in a manner such that a position of the cutting blade relative to the housing assembly along the longitudinal axis is substantially fixed. Each cutting blade is coupled to a respective one of the first tapered blade actuating wedges such that movement of the first tapered blade actuating wedge assembly along the longitudinal axis causes each cutting blade in the first plurality of cutting blades to move perpendicular to the longitudinal axis.Type: ApplicationFiled: March 9, 2012Publication date: September 12, 2013Inventors: Leon Bernard TRUDEAU, Ronald Denis DENNIEL
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Publication number: 20100077895Abstract: The invention relates to a deburring tool for deburring abutting edges at orthogonally and obliquely extending transversal boreholes having a diameter of less than 10 mm in a component, such as an engine block, an injection system for combustion engines, a valve block and a camshaft or transmission shaft. The deburring tool is moved in a rotational and/or translatory manner and comprises a tool shaft (1), which is provided with a clamping end (2), and a tubular shaft part (5), characterized in that said tubular shaft part holds one or several cutting bodies (11) with a cutting blade (3), the cutting bodies being mounted in a movable manner in a passage (10), and in that a substance that is pressed under pressure into the through-bore (7) of the tool shaft (1) displaces the blade(s) to the exterior. The deburring tool is configured as a single piece and can be produced at low cost. Different blade geometries remove the burr by means of high speed deburring.Type: ApplicationFiled: November 21, 2007Publication date: April 1, 2010Applicant: Dr. Beier EntgrattechnikInventor: Hans-Michael Beier
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Patent number: 7562609Abstract: The method of forming a through-hole is capable of preventing formation of burrs, improving machining efficiency and reducing machining cost. The method of forming a through-hole in a circular wall of a cylindrical part of a work piece comprises the steps of: setting the work piece to a die; inserting a punch, which is provided to a rod-shaped metal core, into the cylindrical part; and pressing and moving a press pin toward the die together with the punch so as to drive the punch into an inner face of the circular wall and bore the through-hole. The press pin is inserted in the cylindrical part via a guide through-hole, which has been formed in the circular wall of the work piece and which is located on the opposite side of a prescribed position corresponding to the through-hole to be bored, and contacts a surface of the metal core, which is located on the opposite side of the punch.Type: GrantFiled: November 28, 2005Date of Patent: July 21, 2009Inventor: Eizou Ueno
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Publication number: 20080178721Abstract: A production casing ripper comprising a swedge; spring housing; coupling; main housing; end piece; blade; and means for connecting the blade to the plunger; wherein the blade is situated inside of the main housing; wherein a plunger is situated inside of the main housing; wherein a primary spring is situated inside of the spring housing; wherein a primary pull rod is connected to the primary spring at one end and to the plunger at the other end; wherein when hydraulic pressure is introduced through the swedge, the plunger moves downward inside of the main housing and causes the blade to extend through an aperture in the main housing; and wherein when the hydraulic pressure is released, the primary spring causes the plunger to return to its original position, thereby causing the blade to retract.Type: ApplicationFiled: January 30, 2007Publication date: July 31, 2008Inventor: Shane Schwindt
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Patent number: 7114423Abstract: A tool is provided for notching an end of a pipe. A punch is provided with a first cutting edge opposite a second cutting edge. The punch is coupled to a punch holder which is configured to move vertically relative to a collar supported upon a base. A pipe support provides a preferred form of die to hold the pipe adjacent the punch. The pipe support includes a first edge, second edge, third edge and fourth edge which can be selectively presented for supporting the end of the pipe adjacent the punch. The first cutting edge and second cutting edge of the punch can be selectively provided for cutting the notch in the pipe. The punch and pipe support are preferably both re-orientable to select various different edges for supporting and cutting the pipe.Type: GrantFiled: May 13, 2003Date of Patent: October 3, 2006Inventor: Donald R. Kelley
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Patent number: 6990879Abstract: A drain line re-perforator device for punching holes in clogged drain pipe sections in a sewage disposal system is provided. The re-perforator device includes an outer cylindrically-shaped housing member and a dual-actuating ram assembly disposed concentrically within the outer housing member. Three equally spaced-apart angled bracket members are mounted hingedly on the peripheral surface of the outer housing member and includes a punch bit positioned for outward radial movement. The ram assembly is formed of a cylinder and a piston rod. The piston rod is moved in a reciprocal motion from a retracted position to a an extended position so as to cause the angled bracket members to pivot outwardly and the punch bits to move outward radially for punching holes in the clogged drain pipe sections.Type: GrantFiled: December 29, 2003Date of Patent: January 31, 2006Inventor: Daniel L. Rubino
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Patent number: 6640602Abstract: A device for simultaneously forming multiple notches in opposing surfaces of a hollow workpiece in a single action. The device includes a first die and a first punch that is fixed relative to the first die. A second die and a second punch are fixed relative to each other and movable relative to the first punch and first die. In response to movement of the second die and second punch, the first die cooperates with the second punch to form a first notch in the first surface and the first punch cooperates with the second die to form a second notch in the second surface.Type: GrantFiled: February 22, 2002Date of Patent: November 4, 2003Assignee: SSD Control Technology, Inc.Inventor: Stephen R. Estes
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Patent number: 6470781Abstract: A lifter bore groover tool having a housing in an essentially rectilinear configuration which has an upper wall and a lower wall and a plurality of side walls. The side walls include a cutting wall and another wall and facing walls there between. A bore is formed in the housing adjacent to the cutting wall. A long cylindrical chamber beneath the bore is in communication with a guide slot extending through the cutting wall. A cylindrical cutting block is axially reciprocable within the long cylindrical chamber. A cutting tool is removably supported in the cutting block extending laterally through the guide slot for contacting the surface of the bore to be grooved. The cutting block and cutting tool are axially adjustable. A bolt is received within the bore. The bolt has an upper end with a head for rotation by the user.Type: GrantFiled: December 1, 2000Date of Patent: October 29, 2002Inventor: John Foster
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Patent number: 6065321Abstract: An outlet for connecting spray nozzles, drop tubes or the like to an irrigation pipe comprising a generally cylindrical-shaped member having an inner end, an outer end, an annular shoulder protruding outwardly therefrom between the inner and outer ends, and an internally threaded bore extending therethrough. When the outlet is positioned in an opening formed in an irrigation pipe, the annular shoulder of the outlet is in engagement with the exterior surface of the pipe. A machine is also disclosed for creating a plurality of horizontally spaced-apart bulged areas in the pipe with each of the bulged areas having a flat surface thereon. The machine includes a bulging punch which creates the bulged areas in the pipe. The machine further includes a punch for creating an outlet opening in the flat surface of the bulged area.Type: GrantFiled: January 28, 1999Date of Patent: May 23, 2000Assignee: Valmont Industries, Inc.Inventors: Alois J. Kosch, Joel J. Ludwig
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Patent number: 6032559Abstract: A pipe punch apparatus which generally comprises a punch housing, a punch means situated within the punch housing, and a collar. The punch housing is connected to a bi-directional hydraulic fluid pump means. Depending on which direction the pump is set, the pump releases fluid into the punch housing which causes the punch means to either extend from the punch housing or retract into the punch housing. The collar is connected to the punch housing by a connecting means so that a notch within the collar receives the punch means when the punch means is in the extended position. The parts are also relatively situated so that positioning the punch housing within a pipe will cause the collar to be located exterior to the pipe. Thus, as the punch means moves from its initial retracted position to its extended position, it will also punch a hole through the pipe.Type: GrantFiled: October 9, 1997Date of Patent: March 7, 2000Inventor: William R. Dean, Jr.
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Patent number: 5899131Abstract: An apparatus for punching out pockets in a roller cage for rollers is provided with two simultaneously movable male dies whose outer cutting edges in the circumferential direction are spaced apart from one another by at least about 0.4 times the cage diameter. These male dies are preferably operative from the interior of the cage and each punches slightly more than half the pocket width. By indexing the cage by one pocket division each time, the pockets are punched out completely. In each punching increment, they receive the runup face for the roller over their entire length, which runup face need not be further machined.Type: GrantFiled: June 27, 1997Date of Patent: May 4, 1999Assignee: SKF GmbHInventors: Peter Benkert, Berthold Beyfuss, Peter Horling
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Patent number: 5842397Abstract: A punching transport apparatus attached to an end surface a cylindrical inner surface drum includes two transport units which are connected with a pulse motor, two belts, and two pulleys so as to be able to move in synchronism to each other. The two transport units are linked to two punching units through linkage blocks. Transport carriers of the transport units are threadingly engaged with ball screws which are linked to the pulleys so that the transport carriers are loosely fitted to guide rails. Receiving an input signal which is entered in accordance with a plate edge distance which is determined by the specifications of a printer, a controller drives the pulse motor under the control of a pulse count. As a result, from an origin position which is determined in accordance with a condition which is detected by an origin sensor, the two transport units and the two punching units move in a central axis direction X.Type: GrantFiled: April 28, 1997Date of Patent: December 1, 1998Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Yoshio Shimizu, Hiroshi Nomoto
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Patent number: 5709139Abstract: A photosensitive material is mounted onto an inner surface of a cylindrical inner surface drum. An input signal which provides the size of the photosensitive material is supplied to a controller. As the controller drives a pulse motor under the control of a control signal, a moving part with which punching units are connected is moved in a circumferential direction of the drum by means of the pulse motor and positioned at the desired positions for punching. Then only two punching units, determined by the controller in accordance with the size of the photosensitive material, are driven to punch holes in the photosensitive material.Type: GrantFiled: February 10, 1995Date of Patent: January 20, 1998Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Yoshio Shimizu, Touru Kawata, Hiroshi Nomoto
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Patent number: 5140881Abstract: A cylinder with a connected sleeve for supply and displacement of fluid through connection to an external piping, as well as an apparatus for and a method of manufacturing same are disclosed. An opening is formed to extend through the wall of a tubular body of the cylinder to provide a communication between the interior and the exterior thereof. A substantially flat abutment is formed on the outer surface around the opening. The outer peripheral surface of a connected sleeve is annularly in contact with the inner peripheral edge of the flat abutment, and the tubular body and the connected sleeve are joined together as by a welding operation.Type: GrantFiled: January 15, 1991Date of Patent: August 25, 1992Assignee: Jidosha Kiki Co., Ltd.Inventors: Masaru Aizaki, Takao Kojima
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Patent number: 4986154Abstract: A method and tool for forming a contour cut in a tube end by applying a force from within the tube end which is applied against the interior surface of the tube end. The tube includes a punch which engages the interior surface of the tube end and has a cutting edge generally conforming to the shape of the contour cut. Preferably each tube end is provide with mirror image contour cuts.Type: GrantFiled: September 29, 1989Date of Patent: January 22, 1991Assignee: The Boeing CompanyInventor: Lorenzo Vernacchio
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Patent number: 4802393Abstract: The subject piercing die is particularly adapted for piercing a hole in a blank having an open interior and an outer wall defining a closed figure. The piercing is done from the interior of the blank through the wall to the outside of the blank. The piercing die includes a base with a slide movably mounted on the base. A guide is movably connected to the slide to control movement of the slide to a straight line movement. A female die having a blank receptacle for holding the blank is mounted on the base. The female die has a cutting aperture extending through a portion of the female die and intersecting the blank receptacle. A male die is mounted on the slide and is positioned within the blank receptacle for mating with the cutting aperture to cut a hole in a blank positioned in the receptacle. The male die cuts a hole in the blank from the interior of the blank through the outer wall to the outside of the blank.Type: GrantFiled: November 4, 1986Date of Patent: February 7, 1989Assignee: Ecological Systems, Inc.Inventors: Henry Gruchalski, Albert Gruchalski
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Patent number: 4799412Abstract: Method for severing the ends of tubing by feeding the end of a tube through a die such that its end to be sheared extends beyond the die while presenting a shear blade with a pointed end in the interior of the tube end. After the shear blade is inserted into the tube, relative vertical movement between the shear blade and the tube is effected to cause the pointed end to initially puncture the tube wall adjacent the die. The shearing blade is thereafter shifted laterally and vertically to shear remaining portions of the tube wall.Type: GrantFiled: October 14, 1986Date of Patent: January 24, 1989Assignee: George A. Mitchell CompanyInventor: Randall L. Alexoff
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Patent number: 4781089Abstract: Method for longitudinal cutting of a wall of a fibrous tubular product in a step shaped profile. The apparatus comprises two parallel main blades which form radial cuts into the wall, slightly displaced from each other. One cut is made radially inward from the outer surface; and the other cut is made radially outward from the inner surface. Each cut extends toward the center of the shell wall to a depth approximately one half the thickness of the shell wall. A third cut is made within the shell wall perpendicular to and joining the other two cuts. These three cuts form a smooth step shaped cut through the wall and facilitate installation of the shell around conduit while minimizing heat loss and mechanical stresses within the wall.Type: GrantFiled: July 19, 1985Date of Patent: November 1, 1988Assignee: Isover Saint-GobainInventors: Gerard Gerber, Andre Leblond
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Patent number: 4768899Abstract: A device and method for severing the piles, grout and structural sleeves of vertical marine structures, from the inside of the structural member or the outside of the structural member. The device will sever the pile, grout or sleeve without jamming even though the weight of the marine structure is bearing down on the pile, grout or sleeve. The device is first lowered into the pile at the desired elevation and further locked onto the wall of the pile. Once the device is locked onto the pile, the cutter is lowered and proceeds to cut into the pile, grout and sleeve. When a sufficient section of the pile, grout or sleeve has been cut, spacers with barbs are forced into the slot formed by the cutter blade and are held in place by the barbs. After the spacers are in place, the remainder of the pile is severed with the cutter blade and a continuity check is made of the pile.Type: GrantFiled: April 20, 1987Date of Patent: September 6, 1988Inventor: Edward D. Dysarz
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Patent number: 4763550Abstract: An apparatus for performing two successive work operations on a workpiece in an equalized force mode. The apparatus includes a base; a yoke mounted for bi-directional movement on the base and carrying a two-sided punch on its upper face; a ram member mounted within the yoke and including two bores opening in opposite faces of the ram member and slidably receiving two pistons secured to the opposite end walls of the yoke; and means for delivering pressurized fluid through the pistons to sealed pressure chambers defined at the inner ends of the pistons between the piston inner ends and the respective confronting faces of the ram to selectively move a pair of die members carried on the upper face of the ram into and out of punching coacting with the double punch carried on the yoke.Type: GrantFiled: May 2, 1986Date of Patent: August 16, 1988Assignee: Lamb RoboInventors: Edward J. Waltonen, Robert E. Obrecht
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Patent number: 4750393Abstract: A method of punching cylindrical tubes with openings from the inside to the outside. In accordance with the method, the punching apparatus includes a mandrel that slidably supports the dies and a backup die that includes a slug ejecting punch which serves the dual function of ejecting the slugs from the backup die and also retracting the punches.Type: GrantFiled: June 15, 1987Date of Patent: June 14, 1988Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Hiroshi Yamagata
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Patent number: 4517868Abstract: Method of and device for making perforations in the inner gusset portions of a tubular web of plastics foil which is provided with side gussets. Such perforations serve to remove air from the interior of bags to be manufactured from the tubular web. According to the invention the gussets are opened over a distance sufficient to introduce, in the interior thereof, a punching member, which is activated by exerting a pressure from outside the tubular web. A device adapted to perform this method comprises a separate carrier provided at either one of its ends with rolls and adapted to be introduced into the interior of the tubular web where it is supported and maintained in its place lengthwise of the web, by two sets of rolls which are situated at the exterior of the tubular web. The carrier is provided with perforating units and the machine frame outside the tubular foil is provided with means to exert through the web material, a force and to activate the perforating units.Type: GrantFiled: June 2, 1983Date of Patent: May 21, 1985Assignee: Wavin B.V.Inventor: Arnoldus W. J. Leloux
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Patent number: 4516460Abstract: The present invention relates to a method and apparatus for cutting a series of uniformly spaced longitudinal slits in a cylindrical shotgun shell wad. The wad slitting apparatus, with which the method can be performed, is a cylindrical member having upper and lower portions. A plurality of cutting members are uniformly spaced about the lower portion and project radially outwardly therefrom, with each cutting member having a downwardly facing cutting edge spaced a predetermined distance from a bottom edge of the cylindrical member. In use, the upper portion of the cylindrical member is secured to a movable ram member, which may be the ram tube of a shotgun reloader, and the lower portion is inserted into a wad positioned on a fixed plate. The ram member is then moved toward the plate, causing the cutting members to make a plurality of longitudinal slits in the wad with the slits extending from the upper end of the wad to an area spaced from a lower base portion of the wad by said predetermined distance.Type: GrantFiled: September 7, 1982Date of Patent: May 14, 1985Assignee: Steel Handlers' Manual and Steel Handloaders' Components, Inc.Inventor: Donald F. Vizecky
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Patent number: 4446623Abstract: A notching tool for forming notches in ridge- or hip-capping for roofs, the notches being formed to match the profile of the roofing sheets.The tool has a base with a pair of spaced feet which engage the ribs on the roofing sheets to align the tool. A notching head on the base has a replaceable die and punch pair, one of which is fixed to support the capping while the other is manually or power-operated to provide a shearing-type cutting action between the die and punch to cut the notches. Adjustable guides on the notching head support the capping for angular alignment between the capping and the notching head and for adjustment of the depth of the notch. The notching head may be pivotally and/or rotatably mounted on the base and the die and punch may be reversible.Type: GrantFiled: September 9, 1981Date of Patent: May 8, 1984Assignee: Beryl Grace StubbersfieldInventors: Edgar M. Stubbersfield, Leslie V. Shaw
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Patent number: 4227393Abstract: An apparatus for punching openings in tubing (T) includes a stationary mandrel (50) having a guide aperture (142) through the walls thereof and adapted for insertion within the tubing to be punched. A moving actuator (110) having an inclined ramp (130) on one end is receivable within the stationary mandrel. A punch (134) is provided having an inclined end for engagement on the inclined ramp of the moving actuator and an opposite end for engagement through guide aperture (142) in the wall of the stationary mandrel. A T-shaped slot (136) is provided on the inclined end of the punch and a corresponding T-shaped ramp (132) is provided on the inclined ramp of the moving actuator. The engagement of ramp (132) in slot (136) provides for sliding engagement of the punch on the actuator. T-shaped slot (136) and ramp (132) are symmetrical about a plane through the longitudinal axis of the punch and the moving actuator. A stop bar (56) extends to one side of stationary mandrel (50).Type: GrantFiled: January 3, 1979Date of Patent: October 14, 1980Assignee: Anvil CorporationInventor: William G. McElhaney
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Patent number: 4220201Abstract: A lower portion of water well casing in the ground is perforated by means of a toothed wheel journalled on the end of an arm pivotally carried by an elongated perforator body. The perforator body carries an air driven piston and actuator link connected to pivot the arm and wheel downwardly from an upward retracted position to a lower start position in which a point of one tooth and a flat end of an adjacent tooth contact the interior of the casing. In this start position the axis of rotation of the wheel is in an over-center position, below a line between the arm pivot axis and the point of the upper one of the two teeth that contact the casing surface. In this over-center start position, the perforator body is pulled upwardly so that the wheel teeth are pressed outwardly against the casing surface with great force by the over-center arrangement which urges the wheel axis closer to the casing.Type: GrantFiled: February 21, 1979Date of Patent: September 2, 1980Assignee: Service Equipment Design Co., Inc.Inventor: Ernest D. Hauk
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Patent number: 4164158Abstract: A punching apparatus comprising a C-shaped frame having a first movable punch disposed in one limb of the frame and a second fixed punch disposed in the other limb of the frame. The frame is pivotally mounted on a supporting base and is guided relative to the base through a cylindrical column connected to the base which is mounted in a bore of the frame, which bore extends parallel to the direction of the punches. A further support is provided for guiding the frame including a stud which is secured to the frame, which stud extends into a slot in the supporting base.Type: GrantFiled: March 27, 1978Date of Patent: August 14, 1979Inventor: Rolf Peddinghaus
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Patent number: 4160398Abstract: Making insulation sleeves from binder containing fibrous material, including integrated method and apparatus features for dividing a continuous blanket or web of fibrous material into individual lengths, winding individual lengths of fibrous blanket upon a multi-part separable mandrel, heating the mandrel to cure the binder in the inside surface layer of the sleeve, separating the sleeve from the mandrel, bringing the outside surface of the sleeve into contact with a heated surface to cure the binder in the outside surface layer of the sleeve, delivering the sleeves to a curing oven in which the sleeves are advanced and rotated, trimming the ends of the sleeves, and axially slitting the sleeves.Type: GrantFiled: March 1, 1978Date of Patent: July 10, 1979Assignee: Saint-Gobain IndustriesInventors: Bernard H. Bichot, Rene Gest
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Patent number: 4122738Abstract: Apparatus for cutting and simultaneously dispensing a web of roll material comprising a carrier for a roll of material mounted in a casing and urged against a rotatable drum which is driven in rotation by manual traction applied to a free end of the material extending from the casing. A profiled pawl is supported at one of the ends of the drum and cooperates with a shock absorber and an elastic abutment to brake the drum at the end of one revolution and hold it in readiness for a subsequent pull on the material. An eccentric lever is secured at the other end of the drum and is engaged by a spring such that in a first portion of rotation of the drum, the spring absorbs energy and after a dead point, it releases its energy to drive the drum in rotation.Type: GrantFiled: July 12, 1977Date of Patent: October 31, 1978Inventor: Maurice Granger
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Patent number: 4043164Abstract: A tool for shaping the end of a branch tube which is to be engaged in a socket in the side of a main tube which tool comprises a die having an aperture to neatly receive the end of a branch tube to be shaped, and an intersecting bore in which a pair of cutters are disposed to each extend into the aperture, the cutters each having slits into which the end of a branch tube may be inserted, the slits being shaped to notch out diametrically opposed segments from the branch tube against the die, means being provided to displace the cutters outwardly and to return them after displacement.Type: GrantFiled: June 9, 1976Date of Patent: August 23, 1977Assignee: Rast Patent Manufacturers Pty. Ltd.Inventor: Anthony Haldane Ray Brookman
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Patent number: 4008638Abstract: A die assembly especially adapted for forming bottom and side openings in a cup-shaped container comprises a base having a cavity therein for the accommodation of the container and a plug movable into and out of the cavity and being of such size as to fit within the container. The plug carries a plurality of springy punches having free ends which project beyond the corresponding end of the plug and which are operable to punch holes in the bottom of the container. The plug carries a floating cam ring provided with means responsive to predetermined movement of the plug into the cavity to cam the punches laterally of the plug and form openings in the side of the container.Type: GrantFiled: February 5, 1976Date of Patent: February 22, 1977Assignee: Miller Mold CompanyInventor: Frederick O. Miller
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Patent number: 3995518Abstract: The invention comprises a means and method for punching medically acceptable holes in flexible catheter tubing through a manual punching device which includes an elongated shank sized for snug fitting disposition within the catheter tube and is provided with a pair of cooperating wedge-shaped elements which are driven against each other by manipulation of the device to drive a punch radially outwardly through the wall of the catheter tube and through a complimentary female die which is snugly disposed against the outer wall of the catheter tube.Type: GrantFiled: August 28, 1975Date of Patent: December 7, 1976Inventor: Carl M. Spiroff
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Patent number: RE34621Abstract: An apparatus for performing two successive work operations on a workpiece in an equalized force mode. The apparatus includes a base; a yoke mounted for bi-directional movement on the base and carrying a two-sided punch on its upper face; a ram member mounted within the yoke and including two bores opening in opposite faces of the ram member and slidably receiving two pistons secured to the opposite end walls of the yoke; and means for delivering pressurized fluid through the pistons to sealed pressure chambers defined at the inner ends of the pistons between the piston inner ends and the respective confronting faces of the ram to selectively move a pair of die members carried on the upper face of the ram into and out of punching coacting with the double punch carried on the yoke.Type: GrantFiled: March 5, 1991Date of Patent: May 31, 1994Assignee: Lamb Robo, Inc.Inventors: Edward J. Waltonen, Robert E. Obrecht