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| Number | Title | Issue Date |
| 5458717 | Method of shearing thin metal sheet A method of shearing a thin metal sheet having a thickness of approximately 0.1 mm or less so as to be separated into a product and scrap by a pair of dies. A chamfer or a round having a size of approximately from 5 to 10 times greater than the thickness ... | 10/17/1995 |
| 5445057 | Punching die with a damping member A punching die includes a punch body and a punch head provided for an upper portion of the punch body. The punch head is struck by a striker. The punching die further includes a punch guide disposed at a lower portion of the punch body, a retainer collar ... | 08/29/1995 |
| 5419225 | Punching die A punching die includes a punch body, a punch driver secured to the punch body, and a punch head provided on an upper portion of the punch driver for movement relative to the punch driver when the punch head is struck by a striker. The punch die further i... | 05/30/1995 |
| 5417134 | Apparatus for laterally positioning flat cable An apparatus for laterally positioning flat cable in a machine for performing an operation on the cable comprises a base and a pair of cable guides which are movable with respect to the base. Each of the cable guides has a cable guide surface configured c... | 05/23/1995 |
| 5329835 | Adjustable length punch set assembly An adjustable length punch set assembly for adjusting the overall length of a punch having a punch driver and punch holder that are axially adjustable relative to each other and retained at least in part within a punch guide sleeve and biased axially with... | 07/19/1994 |
| 5307720 | Punch retainer with punch release tool A retainer assembly and tool combination for holding and releasing the shank of a punch includes a triangular retainer body with a punch opening extending through the body. An elongated locking ball hole intersects the axis of the punch opening and a lock... | 05/03/1994 |
| 5235881 | Piercing die whose punch has different amounts of chamfer at different outer peripheral edge portions A piercing die including a punch and a die cooperating with each other to effect a piercing operation on a metallic workpiece sheet, the punch having an outer peripheral edge having a closed profile at a working end thereof. The outer peripheral edge of t... | 08/17/1993 |
| 5197368 | Punch and die retainer and release mechanism An improved ball-type punch retainer for holding and releasing the shank of a punch or a die includes a retainer body with a shank-receiving opening which extends into the body, and a locking ball is movable by a spring in an inclined hole in the retainer... | 03/30/1993 |
| 5178050 | Die for use in fine press working The object of the invention is to reduce the number of the producing processes of an IC lead frame. In the present invention, a plurality of punches 17 are provided protruding from the base 16 in such a manner that their surfaces are disposed approximatel... | 01/12/1993 |
| 5133237 | Die punch A three-piece, die punch has an upper body fixed in the die, a changeable quill, and a lower body to hold the changeable quill in the die punch.... | 07/28/1992 |
| 5067339 | Cutting and forming tool for complicated flat structures A tool comprises a lower part (2) and an upper part (1). The upper part (1) of the tool can slide on guides (3) and has a force plug (7) and a blanking punch (4). A die-plate (5) arranged on the lower part (1) of the tool contains a mold cavity (16) of a ... | 11/26/1991 |
| 5054347 | Punch assembly with improved disassembly features A punch assembly is described for a punch press having a quick tool change capability. The punch assembly comprises a punch sleeve having a punch slidably mounted therein. A tang extends from the sleeve, and a bolt is connected between the tang and the pu... | 10/08/1991 |
| 5044244 | Heavy duty punch A heavy duty punch for piercing armor plate and the like has a shank by which the punch may be held when in use and a piercing end projecting axially from the shank. The piercing end terminates in a sharp-edged tip. The tip is connected to the shank by a ... | 09/03/1991 |
| 5020407 | Adjustable form tool head A form tool built to be used in a single station of a turret press machine for the sheet metal industry that comprises a punch body rigidly attached to an adjustable form tool head. The adjustable form tool head is quickly adjustable for different forming... | 06/04/1991 |
| 4989482 | Method and apparatus for punching a hole in sheet material A method of and apparatus for punching a hole in sheet material is provided using pressurized fluid as the female die together with a modified male punch. The slug of material to be sheared from the material is during and after shearing continuously held ... | 02/05/1991 |
| 4921154 | Separating device in an automatic stamping machine An automatic machine for die cutting and creasing paperboard and similar paper materials, in sheet or continuous web form, into shaped package blanks and the like has a separation station at which the shaped blanks are separated from the waste portions of... | 05/01/1990 |
| 4913012 | High-precision punch and die method A high-precision punch and die method wherein a pair of pneumostatic bearings are mounted on a rigid frame structure in registered spaced-apart relation to each other, each bearing having a plurality of journal segments provided with a pneumostatic bearin... | 04/03/1990 |
| 4913021 | High-precision punch and die apparatus A high-precision punch and die apparatus having a stationary frame; a punch movable relative to the frame, the punch including integral pneumostatic bearing surfaces and at least one cutting edge; and a die adjustably mounted to the frame to receive the p... | 04/03/1990 |
| 4856399 | Apparatus for blanking thin sheets using a punch having localized regions of hand and soft elastic material In an apparatus for blanking out a sheet material (1) between a punch (4) and a die (6) having a sharp edge (7), the punch (4) is formed by a heterogeneous composite elastic material having localized regions (4a) having a relatively higher hardness, and c... | 08/15/1989 |
| 4843930 | Apparatus for trimming a tubular article The apparatus comprises axially aligned punches 1 and 2 which are operated to cooperate with dies 3 and 4 to trim the flanged ends of a tubular article. The dies are formed in two halves which are opened to allow an article to be positioned at the work st... | 07/04/1989 |
| 4821615 | Slug retainer for the die assembly of a stamping and forming machine Slug retainer for the die assembly of a stamping and forming machine comprises a thin sheet of resilient metal which is on the rear end of the removable portion of the die assembly. Slugs produced by the punch and die are pushed through a slug passageway ... | 04/18/1989 |
| 4793231 | Composite tool and method of making Improved composite tools, such as punches and dies, which tools have very high and abrasion resistant working surfaces. The composite tool includes a relatively soft support, such as a tool steel body, and a relatively hard working portion, such as a carb... | 12/27/1988 |
| 4762043 | Long wearing punch An improved punching tool having a long wearing characteristic and characterized in having at least first and second punching edges disposed on the leading end of the punch body wherein these punching edges are separated by an annular groove and wherein t... | 08/09/1988 |
| 4753010 | Stoma-wafer cutting apparatus The apparatus of the present invention addresses the unique problem of punching centrally located holes in stoma-wafers, and comprises a base portion fixed to a surface such as a table or the like, the base portion having a raised annular projection for p... | 06/28/1988 |
| 4696211 | Method and apparatus for nibbling cutouts with rectilinear and curvilinear contours by rotation of tooling with cutting surfaces of rectilinear and curvilinear contours and novel tooling therefor A punch press has a punch support and die support which are rotatable about a common vertical axis, and a drive mechanism for rotating and effecting the reorientation of the tooling relative to the X and Y axes of the punch press. In this fashion, rotatio... | 09/29/1987 |
| 4624165 | Power tool, particularly revolving cutting press with tool receiving means suitable for a remotedly controlled exchange In a power tool, particular a revolving cutting press, a punch holder and a stripper shoe are provided with openings for a punch and a stripper, whereas a matrix shoe which carries a matrix is located in a lower revolving plate also in a recess open in di... | 11/25/1986 |
| 4621556 | Relieved serrated dies for rotary punching units A serrated rotary die having a minimum die cutback angle θ, wherein ##EQU1## where CL DIST is the centerline distance between punch and die axes of rotation, ##EQU2## MD is a die internal diameter at the die teeth roots, and HT is the height ... | 11/11/1986 |
| 4558619 | Apparatus for cutting discs from a sheet of flexible material An improved apparatus for cutting out discs from a sheet of cotton or other flexible material employs a reciprocating punch assembly having a punch whose stem is held in a housing that aligns the punch with an aperture in a die. The punch carries a protru... | 12/17/1985 |
| 4548113 | Perforating device A device for perforating a web or sheet of material, includes a rotatable male die carrier roll having at least one radially extending cylindrical bore opening into its outer periphery, and a male die holder comprising a hollow cylinder having an outer di... | 10/22/1985 |
| 4526077 | Heavy duty punch A heavy duty punch for piercing armor plate and the like having a piercing end which is generally cylindrical and terminates in a conical tip. The punch has a shank which is received in the socket of a punch holder. The punch holder has gripping jaws coop... | 07/02/1985 |
| 4395929 | Method and stamping tool for waste-free stamping of packaging strips and packaging strips so fabricated The invention sets forth a method and a corresponding stamping tool for waste-free stamping out packaging strips such as the so-called press-through packages. These press-through packages are made of a strip of foil comprising a lower foil strip with depr... | 08/02/1983 |
| 4339976 | Punch retainer A punch and retainer assembly wherein the punch has a non-circular punching end, a flattened surface at the upper end of the side wall thereof and a radially inwardly extending recess directly below the flattened side wall portion. The punch retainer incl... | 07/20/1982 |
| 4317399 | Die cutter for stamping rectangular objects with rounded corners A device designed to stamp generally rectangular blister packages from an intermittently advancing laminated strip comprises a die with rounded corners whose radii of curvature are substantially larger at a transverse leading edge than at a transverse tra... | 03/02/1982 |
| 4273015 | Dome head punch A novel punch for employment in a machine utilizing a punch ring containing a number of spaced, radially-arrayed holes in which the punches are secured, with the punch ring being used in cooperative relation with a die ring employing a number of dies corr... | 06/16/1981 |
| 4244255 | Article slotting apparatus An article slotting apparatus that includes a base member and a vertical support member, with a fixed platen connected at its rear edge area to the support member. Movable posts pass slidably through bores in the fixed platen and are connected at first en... | 01/13/1981 |
| 4094185 | Double-ended heading punch A punch for forming a fastener head has a shaped projection at each end and is releasably secured in a holder with one end abutting against a ledge on the inside of the holder and the other end extending beyond the holder. The shaped projections are forme... | 06/13/1978 |
| 4061065 | Carpet cutting device A base member has spaced opposite first and second parallel surfaces. A support member is mounted on the base member in spaced parallel relation with the first surface of the base member in a manner whereby a carpet is passable between the base and suppor... | 12/06/1977 |
| 3996832 | Punch for producing holes in foamed thermoplastic containers A hole punch having a curved cutting edge of generally the same contour as the surface being punched produces clean holes in wall of foamed plastic containers.... | 12/14/1976 |
| 3974728 | Multi-part punch A punch is formed by heat hardening a tool steel body previously machined to define a punch body portion having an end opening cavity including a conical end opening portion and a cylindrical base portion; inserting a cylindrically shaped hard and abrasiv... | 08/17/1976 |
| 3943809 | Rotary tab cutter A continuously moving web passes over a fixed female die, which die is slotted to define a U-shaped cutting edge. A cylindrical punch rotates on an axis above the path of the web so that a cutting edge defined at the free end of the punch moves into the s... | 03/16/1976 |
