Cutlery – Cutting tools – Saw
Patent
1995-05-31
1996-11-19
Payer, Hwei-Siu
Cutlery
Cutting tools
Saw
30337, 279 71, 279 81, B27B 1909
Patent
active
055750710
ABSTRACT:
A clamping system for attaching a saw blade to a blade carrier of a reciprocating saw includes a clamp member having a tubular body and a hollow interior. The clamp member is mounted on the free end of a blade carrier which has a longitudinal slot for receiving the shank of a saw blade. The free end of the blade carrier has an aperture in its side wall. In a preferred embodiment a ball is received within the aperture and freely movable therein. The inner surface of the clamp member has an eccentric groove which defines a camming surface engaging the ball. Upon rotation of the clamp member to a locking position the ball engages an aperture in the shank of the blade to hold the blade in place. The clamp system is designed to accept saw blades having standard universal designs. In another preferred embodiment a pin is received within the aperture in the blade carrier. The pin has a first end which is adapted to be received within the aperture in the shank portion of the saw blade. The first pin has a first spherical segment defined by a first radius of curvature and a second spherical segment defined by a second radius of curvature greater than the first radius of curvature.
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Phillips Alan
Schnell John W.
Payer Hwei-Siu
Porter-Cable Corporation
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