US 12,246,470 B2
Powered saw including dust capture apparatus
John Merck, Londonderry, NH (US); and Reginald A. Ronzello, Sr., Pelham, NH (US)
Assigned to Perfect Trac Opco, LLC, Londonderry, NH (US)
Filed by Perfect Trac OpCo, LLC, Londonderry, NH (US)
Filed on Feb. 11, 2023, as Appl. No. 18/108,593.
Application 18/108,593 is a continuation of application No. 16/877,393, filed on May 18, 2020, granted, now 11,584,038.
Application 16/877,393 is a continuation of application No. 15/466,741, filed on Mar. 22, 2017, granted, now 10,675,782, issued on Jun. 9, 2020.
Application 15/466,741 is a continuation in part of application No. 14/853,852, filed on Sep. 14, 2015, granted, now 10,703,017, issued on Jul. 7, 2020.
Application 14/853,852 is a continuation of application No. 14/500,052, filed on Sep. 29, 2014, granted, now 9,156,188, issued on Oct. 13, 2015.
Application 14/500,052 is a continuation of application No. 13/829,170, filed on Mar. 14, 2013, granted, now 9,027,542, issued on May 12, 2015.
Claims priority of provisional application 62/311,643, filed on Mar. 22, 2016.
Claims priority of provisional application 61/765,003, filed on Feb. 14, 2013.
Prior Publication US 2023/0219257 A1, Jul. 13, 2023
Int. Cl. B28D 7/02 (2006.01); B28D 1/04 (2006.01); B28D 1/12 (2006.01); B28D 7/04 (2006.01)
CPC B28D 7/02 (2013.01) [B28D 1/045 (2013.01); B28D 1/12 (2013.01); B28D 7/046 (2013.01); Y10T 83/0453 (2015.04); Y10T 83/207 (2015.04)] 10 Claims
OG exemplary drawing
 
1. A method of changing a concrete saw blade comprising:
providing a concrete saw having a first circular saw blade, said first circular saw blade having an outer peripheral edge;
providing a vacuum manifold disposed about a portion of said outer peripheral edge, said vacuum manifold including a manifold flange portion;
providing a tubular hose coupling, said tubular hose coupling having a hose coupling flange portion, said hose coupling flange portion being operatively coupled to said manifold flange portion, said tubular hose coupling including a fastener, said fastener being adapted to retain said tubular hose coupling at a first elevation angle with respect to said concrete saw;
releasing said fastener;
pivoting said tubular hose coupling to adjust its orientation from said first elevation angle to a second elevation angle whereby said tubular hose coupling is moved from a first position in which said tubular hose coupling obstructs removal of said first circular saw blade from said concrete saw to a second position in which removal of said first circular saw blade from said concrete saw is unobstructed;
releasing said first circular saw blade from said concrete saw;
replacing said first circular saw blade with a second circular saw blade;
pivoting said tubular hose coupling to adjust its orientation from said second elevation angle to said first elevation angle whereby said tubular hose coupling is moved from said second position to said first position; and
fastening said fastener.