# US 7,607,376 B2 · Paring apparatus with pivotable paring head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,607,376 B2 - Document ID: US7607376B2 - Status: Granted - Kind: B2 - Application number: 11/307,401 - Filed: 2006-02-06 - Published: 2007-09-06 - Granted: 2009-10-27 - Earliest claimed: 2001-10-26 - Assignees: PF Schweisstechnologie GmbH - Inventors: Bernd Merle - Web page: https://patentgrep.com/patent/US7607376B2 ## CPC - B23D 21/10: with other cutting blades or tools - B23B 5/16: for bevelling, chamfering, or deburring the ends of bars or tubes - B23B 2260/116: Rollers or rolls - Y10T 82/16442: with means to circumrotate tool[s] about work - Y10T 82/22: Portable lathe for pipe turning - B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q) - B23B: TURNING; BORING (arrangements for copying or controlling B23Q) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An apparatus for paring tubular articles (R), especially for plastic tubes, has at least one support unit (10) for supporting the article (R) to be pared, a paring unit (40) which has a paring head (44) with at least one blade assembly (46) and at least one guide assembly (48), and a carrier unit (70) to which the support unit (10) and the paring head unit (40) are held in mutually spaced relationship. The paring head (44) is pivotable about a pivot axis (50) which extends at least approximately perpendicularly to the plane defined by the support unit (10) and the paring unit (40). ## Claims ### Claim 1 An apparatus for paring tubular articles, comprising: at least one support unit for supporting the article to be pared; a paring unit comprising a paring head with at least one blade assembly and at least one guide assembly; a carrier unit for holding the support unit and the paring unit in a spaced apart relationship; wherein the paring head pivots about a pivot axis which extends approximately perpendicularly to a plane defined by the support unit and the paring unit; wherein the blade assembly comprises a knife member having at least one cutting edge formed generally parallel to the pivot axis of the paring head; and wherein the at least one guide assembly comprises at least two guide elements arranged successively in a direction in which paring occurs and the pivot axis is positioned between the guide elements. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein each of the at least two guide elements comprises a pair of guide rollers, each guide roller mounted to the guide assembly at a mounting point such that the mounting points define a rectangle, and the pivot axis is positioned between the two pairs of guide rollers. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein at least one of the paring unit and the support unit comprises a snap closure having a screw thread portion for releasably engaging a spindle of a spindle drive for adjusting the spacing between the paring unit and the support unit. ### Claim 4 (depends on 1) The apparatus of claim 1, further comprising a biaser that holds the paring head elastically in a first position. ### Claim 5 (depends on 2) The apparatus of claim 2, further comprising at least two abutments for limiting the pivoting of the paring head. ### Claim 6 (depends on 2) The apparatus of claim 2, wherein the knife member is formed in one piece with a slide shoe, the slide shoe being releasably fixed to the paring head. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the slide shoe has two sliding surfaces which are spaced apart from each other by an opening. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the knife member is positioned in the opening in the slide shoe and a portion thereof projects beyond the sliding surfaces. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein the knife member is positioned to shave a portion of an outer surface of the tubular article at a predetermined depth and width. ### Claim 10 An apparatus for paring tubular articles, comprising: at least one support unit for supporting the article to be pared; a paring unit comprising a paring head with at least one blade assembly and at least one guide assembly; a carrier unit for holding the support unit and the paring unit in a spaced apart relationship; wherein the paring head pivots about a pivot axis which is provided at the paring unit and which extends approximately perpendicularly to a plane defined by the support unit and the paring unit; wherein the blade assembly comprises a knife member positioned to shave an outer surface of the tubular article at a predetermined depth and width; and wherein the at least one guide assembly comprises at least two guide elements arranged successively in a direction in which paring occurs and the pivot axis is positioned between the guide elements. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the blade assembly comprises a knife member having at least one cutting edge formed generally parallel to the pivot axis of the paring head. ### Claim 12 (depends on 10) The apparatus of claim 10, wherein each of the at least two guide elements comprises a pair of guide rollers, each guide roller mounted to the guide assembly at a mounting point such that the mounting points define a rectangle, and the pivot axis is positioned between the two pairs of guide rollers. ### Claim 13 (depends on 10) The apparatus of claim 10, wherein at least one of the paring unit and the support unit comprises a snap closure having a screw thread portion for releasably engaging a spindle of a spindle drive for adjusting the spacing between the paring unit and the support unit. ### Claim 14 An apparatus for paring tubular articles, comprising: at least one support unit for supporting the article to be pared; a paring unit comprising a paring head with at least one blade assembly and at least one guide assembly; a carrier unit for holding the support unit and the paring unit in a spaced apart relationship; and wherein the paring head pivots about a pivot axis which is provided at the paring unit and which extends approximately perpendicularly to a plane defined by the support unit and the paring unit; and the at least one guide assembly comprises at least two guide elements arranged successively in a direction in which paring occurs and the pivot axis is positioned between the guide elements. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the blade assembly comprises a knife member having at least one cutting edge formed generally parallel to the pivot axis of the paring head. ### Claim 16 (depends on 14) The apparatus of claim 14, wherein the blade assembly comprises a knife member positioned to shave an outer surface of the tubular article at a predetermined depth and width. ### Claim 17 (depends on 14) The apparatus of claim 14, wherein at least one of the paring unit and the support unit comprises a snap closure having a screw thread portion for releasably engaging a spindle of a spindle drive for adjusting the spacing between the paring unit and the support unit. ### Claim 18 (depends on 14) The apparatus of claim 14, wherein the at least one guide element is resiliently mounted to the mounting block, wherein the mounting block is fixed resiliently to the paring head and pivots freely about an axis that is perpendicular to the pivot axis.