Cutlery – Cutting tools – Saw
Reexamination Certificate
1999-12-22
2001-07-17
Rachuba, M. (Department: 3724)
Cutlery
Cutting tools
Saw
C030S337000, C279S075000, C279S904000, C279S905000
Reexamination Certificate
active
06260281
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to devices for mounting blades on reciprocating cutting tools, such as power reciprocating saws and jig saws.
2. Description of the Related Art
A known device for mounting saw blades on a jig saw is taught in Japanese Laid-Open Utility Model Publication No. 4-109101. The mounting device of this publication includes an operation member that can be rotated by an operator for tightening and loosening a blade by means of a thread mechanism. However, such rotating operations for tightening and loosening the blade are cumbersome and inconvenient.
SUMMARY OF THE INVENTION
It is, accordingly, an object of the present invention to teach a device for mounting blades on cutting tools, in which the blades can be easily mounted on and removed from the cutting tools.
According to the present invention, a device for mounting a blade on a blade carrier of a cutting tool is taught that includes a blade pressing member for pressing the blade against a surface of the blade carrier. The blade carrier may be, for example, a reciprocating drive shaft of a power saw. A retainer member may serve as a guide for the pressing member, such that the pressing member can move between a first position, in which the blade is pressed against the surface to fix the blade to the blade carrier, and a second position, in which the pressing force of the pressing member is released and the blade can be removed from the blade carrier. An operation member may be operable by an operator to move the pressing member between the first position and the second position by means of a ball that can roll along a contacting surface formed on the operation member.
Therefore, when the operator shifts the operation member in one direction, the pressing member will press the blade against the blade carrier. On the other hand, when the operator shifts the operation member in the opposite direction, the pressing member may move from the first position to the second position to thereby release the blade from the blade carrier.
Because the blade can be mounted on and removed from the blade carrier by the shifting movement of the operation member, the mounting and removing operation of the blade can be easily performed. Therefore, the operability of the blade mounting device can be improved.
Other objects, features and advantages of the present invention will be readily understood after reading the following detailed description together with the accompanying drawings and the claims.
REFERENCES:
patent: 3750283 (1973-08-01), Hoffman
patent: 4285129 (1981-08-01), Hoffman
patent: 4299402 (1981-11-01), Hoffman
patent: 4351112 (1982-09-01), Nalley
patent: 4441255 (1984-04-01), Hoffman
patent: 4528753 (1985-07-01), Kuhlmann et al.
patent: 5322302 (1994-06-01), Quirijnen
patent: 5443276 (1995-08-01), Nasser et al.
patent: 5573255 (1996-11-01), Salpaka
patent: 5575071 (1996-11-01), Phillips et al.
patent: 5647133 (1997-07-01), Dassoulas
patent: 5903983 (1999-05-01), Jungmann et al.
patent: 6009627 (2000-01-01), Dassoulas et al.
patent: 4-109101 (1992-09-01), None
Mori Shinsuke
Niinomi Mitsuyoshi
Okumura Michio
Dennison, Scheiner Schultz & Wakeman
Makita Corporation
Rachuba M.
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