US 11,752,653 B2
Cutting device
Fraser Thomas O'Keefe, Burleigh Waters (AU); Andrew Loch, Worongary (AU); William McMinn, Coomera (AU); and Michael James Elkington, New Farm (AU)
Assigned to Frelk Industries Pty. Ltd., Torquay (AU)
Filed by Frelk Industries Pty. Ltd., Torquay (AU)
Filed on May 17, 2022, as Appl. No. 17/746,076.
Application 17/746,076 is a continuation of application No. 13/388,734, abandoned, previously published as PCT/AU2010/000981, filed on Aug. 3, 2010.
Claims priority of application No. 2009203210 (AU), filed on Aug. 3, 2009.
Prior Publication US 2022/0274280 A1, Sep. 1, 2022
Int. Cl. B27B 5/32 (2006.01); B24D 5/12 (2006.01); B26D 7/00 (2006.01); B24D 5/16 (2006.01); B26D 1/00 (2006.01); B24B 45/00 (2006.01); B26D 1/14 (2006.01); B23D 45/12 (2006.01); B26D 3/16 (2006.01)
CPC B27B 5/32 (2013.01) [B23D 45/12 (2013.01); B24B 45/006 (2013.01); B24D 5/12 (2013.01); B24D 5/16 (2013.01); B26D 1/0006 (2013.01); B26D 1/14 (2013.01); B26D 3/163 (2013.01); B26D 3/166 (2013.01); B26D 7/0006 (2013.01); B26D 2001/002 (2013.01); B26D 2001/0046 (2013.01); Y10T 83/04 (2015.04); Y10T 83/8878 (2015.04)] 6 Claims
OG exemplary drawing
 
1. A cutting device for cutting through a sidewall of a pipe from an inside of the pipe, said cutting device comprising:
(i) an elongate carrier having a longitudinal axis, an attaching formation defined at a tool end of the elongate carrier for being received in a gripping element of a power tool, and said elongate carrier having a free end;
(ii) a guide wheel being rotatably attached to the free end of the elongate carrier such that the guide wheel may rotate freely relative to said elongate carrier and such that said elongate carrier does not extend past a proximal edge of said guide wheel, said guide wheel having an axis of rotation that is co-axial with the longitudinal axis of the elongate carrier, said guide wheel having a bearing surface extending parallel to the longitudinal axis of said elongate carrier, the bearing surface of the guide wheel for bearing against an inner surface of the pipe and for extending parallel to a longitudinal axis of the pipe, in use when cutting the pipe;
(iii) a cutting disc fixedly attached to the elongate carrier, the cutting disc having a peripheral cutting edge, and the cutting disc being located intermediate the guide wheel and the tool end, and the guide wheel having a diameter that is less than a diameter of the cutting disc, such that a peripheral space that is defined between the cutting edge of the cutting disc and the bearing surface serves as a depth gauge and facilitates cutting the pipe to the required depth, the cutting disc for cutting into the pipe to a depth where the bearing surface of the guide wheel bears against the inner surface of the pipe, and where the guide wheel rotates along the inner surface of the pipe as the cut is extended around the full circumference of the pipe;
(iv) a button mounted at said free end of said elongate carrier, said button having a first diameter that is larger than a second diameter of said elongate carrier; and
(v) a substantially cylindrical boss mounted on said carrier adjoining a distal end of said button, wherein said first diameter of said button is larger than a third diameter of said boss, and wherein said third diameter of said boss is larger than said first diameter of said elongate carrier,
wherein an axial distance between the cutting disc and the guide wheel is 0.5 mm-5.0 mm.