US 12,377,477 B2
Collapsible hand saw with tubular frame doubling as storage container for other components
Gordon N. Makowsky, Kenora (CA)
Filed by Gordon N. Makowsky, Kenora (CA)
Filed on Jul. 22, 2022, as Appl. No. 17/871,057.
Claims priority of provisional application 63/226,445, filed on Jul. 28, 2021.
Prior Publication US 2023/0012283 A1, Jan. 12, 2023
Int. Cl. B23D 51/03 (2006.01); B27B 21/02 (2006.01)
CPC B23D 51/03 (2013.01) [B27B 21/02 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A collapsible hand saw comprising:
an elongated tubular frame member having a first end and a second end situated oppositely of one another in a longitudinal direction of said frame member, a hollow interior that runs longitudinally therethrough, and first and second predefined attachment features defined on said elongated tubular frame member at respective first and second locations situated respectively proximate the first and second ends of the frame member;
a first arm for attachment to the elongated tubular frame at the first location in an installed position spanning outward therefrom at an underside thereof in a reference position of the collapsible hand saw, said first arm having a respective attachment end at or adjacent which said first arm is configured for engagement to the frame member at the first attachment feature thereof, and a respective mounting end at or adjacent which said first arm is configured for selective coupling to a bowsaw blade at a respective mounting hole therein in the bowsaw blade near a respective first end thereof;
a second arm for attachment to the elongated tubular frame at the second location in an installed position spanning outward therefrom at the underside thereof, said second arm having a respective attachment end at or adjacent which said second arm is configured for engagement to the frame member at the second attachment feature thereof, and a respective mounting end at or adjacent which said second arm is configured for selective coupling to the bowsaw blade at a respective mounting hole in the bowsaw blade near a respective second end thereof; and
an adjustable tensioner connectable between the frame member and the first arm at a first tensioner connection point on said first arm and in a position that, when tightened, pulls the respective mounting end of said first arm away from the second arm and toward the first end of the frame member to tension the bowsaw blade;
wherein the hollow interior of the frame member is sufficiently sized to accommodate simultaneous storage therein of at least the first and second arms, and the adjustable tensioner.