# US 7,204,181 B2 · Reversible floating punch retainer for punch change retainer tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,204,181 B2 - Document ID: US7204181B2 - Status: Granted - Kind: B2 - Application number: 10/884,598 - Filed: 2004-07-02 - Published: 2006-01-05 - Granted: 2007-04-17 - Earliest claimed: 2004-07-02 - Assignees: Dayton Progress Corporation - Inventors: Van Lynn Goedeking - Web page: https://patentgrep.com/patent/US7204181B2 ## CPC - B26F 1/14: Punching tools; Punching dies - B21D 28/34: Perforating tools; Die holders - B26D 7/2614: {Means for mounting the cutting member} - Y10T 83/8748: Tool displaceable to inactive position [e.g., for work loading] - Y10T 83/9423: Punching tool - Y10T 83/9461: Resiliently biased connection - Y10T 83/9471: Rectilinearly - Y10T 83/9476: Tool is single element with continuous cutting edge [e.g., punch, etc.] - B26F: PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING (marking-out, perforating or making buttonholes A41H25/00; shoemaking A43D; surgery A61B; punching metal B21D; drilling metal B23B; cutting of metal by applying heat locally, e.g. flame cutting, B23K; cutting by abrasive fluid jets B24C5/02; details common to machines for severing B26D; drilling wood B27C; drilling stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; of glass C03B; of leather C14B; of textile materials D06H; for light guides G02B6/25; of tickets G07B) - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - B26D: CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING (for growing crops or plants A01D, A01G; for fodder or straw A01F; for bulk butter A01J; for dough A21C; slaughtering A22B; for tobacco, cigars or cigarettes A24; marking-out, perforating or making buttonholes A41H25/00; manufacturing footwear A43D; brushmaking A46D; surgery A61B; disintegrating, mincing or shredding in general B02C; cutting wire, making pins or nails B21F, B21G; of the kind used formetal B23; cutting by abrasive fluid jets B24C5/02; hand-held cutting tools B26B; perforating, cutting-out, stamping-out or punching, or severing by means other than cutting B26F; for wood B27; for stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; article or web delivery apparatus incorporating cutting or line-perforating devices B65H35/00; for leather or upholstery B68, C14B; for glass C03B; making matches C06F; for peat C10F; for sugar C13B45/00; for textile materials D06H; civil engineering, building, mining, see Section E; for light guides G02B6/25; cutting processed photographic material G03D15/04) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A punch change retainer for positioning a floating punch in a retracted, disengage position and an extended, engage position. The change retainer includes a change retainer body and a punch retainer receiving aperture extending upwardly through the change retainer body from a bottom surface thereof. A gagging member is located in the change retainer body and is actuable by an actuator between a retracted position distal from a nose portion of the change retainer body and an extended position adjacent the nose portion of the change retainer body. A floating punch retainer is receivable within the punch retainer receiving aperture, and includes an upper end positioned for engagement with the gagging member. A punch receiving hole is defined in the floating punch retainer; where the punch receiving hole is adapted to be rotatably positioned about a longitudinal center line of the floating punch retainer within the punch retainer receiving aperture. ## Claims ### Claim 1 A punch change retainer positioning a floating punch retainer in a retracted, disengage position and an extended, engage position, the change retainer comprising: a change retainer body including a nose portion at a front end of the change retainer body and an actuator at a rear end of the change retainer body; a punch retainer receiving aperture extending upwardly through the change retainer body from a bottom surface thereof; a gagging member actuable by the actuator between a retracted position distal from the nose portion of the change retainer body and an extended position adjacent the nose portion of the change retainer body; a floating punch retainer receivable within the punch retainer receiving aperture, an upper end of the floating punch retainer positioned for engagement with the gagging member, the floating punch retainer defining a longitudinal center line located in a front to rear direction; a punch receiving hole defined in the floating punch retainer; and the floating punch retainer being rotatably positioned about the longitudinal center line within the punch retainer receiving aperture. ### Claim 2 (depends on 1) The change retainer of claim 1 wherein the floating punch retainer is generally symmetrical about the longitudinal center line. ### Claim 3 (depends on 1) The change retainer of claim 1 wherein the punch receiving hole is offset from the longitudinal center line and rotation of the floating punch retainer within the punch retainer receiving aperture varies the distance of the punch receiving hole from the nose portion of the change retainer body. ### Claim 4 (depends on 3) The change retainer of claim 3 wherein the floating punch retainer defines at least two different positions in the front to rear direction for the punch receiving hole, and the gagging member is extendable to locations located substantially over the punch receiving hole in each of the different positions of the punch receiving hole. ### Claim 5 (depends on 1) The change retainer of claim 1 wherein the floating punch retainer includes lateral extensions extending beyond lateral sides at an upper end of the floating punch retainer, the lateral extensions located in facing relationship to ledges defined in the change retainer body. ### Claim 6 (depends on 5) The change retainer of claim 5 including a pawl element located in one of the lateral extensions and the ledges for cooperating with a passage in the other of the lateral extensions and the ledges. ### Claim 7 (depends on 6) The change retainer of claim 6 wherein the pawl element is movable to a location on an opposite one of lateral extensions and the ledges to permit positioning of the punch receiving hole to a different location within the change retainer body. ### Claim 8 (depends on 5) The change retainer of claim 5 including spring biasing means engaging between the lateral extensions and the ledges to bias the floating punch retainer to the retracted position. ### Claim 9 (depends on 1) The change retainer of claim 1 wherein the floating punch retainer includes front and rear ramp portions defined at front and rear sides of an upper end of the floating punch retainer for engaging with the gagging member. ### Claim 10 (depends on 9) The change retainer of claim 9 wherein the floating punch retainer comprises a punch retainer body and a backing plate attached to the punch retainer body and the ramp portions are defined in the backing plate.