Guide bar for a chain saw
AssigneeSugihara Trading Co., Ltd.
InventorsHideo Sugihara, Kazuhito Sugihara
Life of this patent
Estimating the term…
Abstract
A guide bar for chain saw comprises a main body of a plate shape. The main body has first and second sides facing each other in the thickness direction of the main body. The main body includes at least a first recess provided on the first side, and a second recess provided on the second side of the main body. The first recess has a first portion communicated with the second recess so that the recesses define in combination a through hole at the communciating portion, and a second portion shielded by the second side of the main body. A filler is packed in said first and second recesses.
Claims18
A guide bar for a chain saw comprising:
- an elongated main body having first and second sides;
- a plurality of spaced apart first recesses formed in a central portion of the first side of the main body thereby forming a plurality of spaced apart first reinforcing supports in the central portion of said first side of the main body, each reinforcing support having a tapered hole extending therethrough;
- a plurality of spaced apart second recesses formed in a central portion of the second side of the main body thereby forming a plurality of spaced apart second reinforcing supports in the central portion of said second side of the main body, each second reinforcing support having a tapered hole extending therethrough, said first and second reinforcing supports being staggered with respect to each other such that each reinforcing support is positioned opposite a recess formed in the opposing side of the main body and said first and second recesses overlap on opposing ends of said reinforcing supports to form a plurality of openings extending entirely through said main body;
- an injection molded resin based filling material that fills said first and second recesses;
- and
- securing means passing through each said tapered hole to secure the filling material in an opposing recess to the guide bar.
A guide bar for a chain saw comprising:
- an elongated main body having first and second sides;
- a plurality of spaced apart isolated recesses formed at first and second sides in a central portion of the main body, each recess having a tapered hole extending therefrom entirely through one side of main body, the tapered holes being substantially smaller than their associated recesses;
- filling material that fills said recesses and said tapered holes to integrally form an enlarged plug portion in each recess and a smaller anchor portion in each tapered hole for securing their associated plugs to the guide bar.
A guide bar for a chain saw comprising:
- an elongated main body having first and second sides;
- a plurality of spaced apart recesses formed in a central portion of the main body,
- a plurality of posts formed integrally with the main body, each post extending upward into a central portion of an associated recess, the posts each being substantially smaller than the recess and having an overhanging lip portion thereon;
- and
- filling material that fills said recesses to form a plug in each recess, the fill material cooperating with the posts to firmly secure their associated plugs to the main body.
Dependencies are inferred from the claim text.