Saw blade clamping arrangement for a power tool
AssigneeBlack & Decker Inc.
InventorsJodi Fortney, Hayden Huang, Kevan Kudo
Life of this patent
Estimating the term…
Abstract
A saw blade clamping arrangement particularly for power reciprocating saws and similar tools having a reciprocating drive shaft connected to a cutting member such as a saw blade includes a clamping member movable relative to the drive shaft between a clamped position and a release position. A threaded fastener passes through an aperture formed in a portion of the clamping member and functions to move the clamping member to its clamped position upon selective rotation. A sleeve surrounds the threaded fastener for rotation therewith. When the sleeve is biased against the clamping member through the force of a biasing member, opposing surfaces prevent rotation of the sleeve.
Claims18
A power reciprocating saw comprising:
- a housing;
- a drive shaft interconnected to the housing for reciprocating motion relative to said housing;
- a saw blade having a haft releasably interconnected to a distal end of said drive shaft for cutting movement along a longitudinal axis;
- and
- a clamping arrangement for releasably and securely mounting said saw blade to said drive shaft, said clamping arrangement including:
- a clamping body at least partially surrounding said drive shaft and said saw blade, said drive shaft movable relative to said clamping body between a clamped position for securing said saw blade adjacent to said drive shaft and a release position in which said saw blade may be separated from said drive shaft;
- a threaded fastener having a head, said threaded fastener engaging an aperture which passes through a portion of said clamping body;
- a sleeve defining a channel and surrounding said threaded fastener, said sleeve cooperating with said head of said threaded fastener for preventing rotation of said sleeve relative to said threaded fastener;
- and
- a biasing member disposed in said channel and operative for providing a biasing force to bias said sleeve against said clamping body.
A saw blade clamping arrangement for a power tool of the type including a housing, a drive shaft mounted for reciprocating motion relative to the housing, and a saw blade having a haft releasably interconnected with a distal end of the drive shaft for rectilinear motion along a cutting axis, the saw blade clamping arrangement comprising:
- a clamping member at least partially surrounding the drive shaft and the saw blade, said drive shaft movable relative to the clamping member between a clamped position for securing the saw blade adjacent to the drive shaft and a release position in which the saw blade may be separated from the drive shaft, said clamping member including an internally threaded aperture;
- and
- a threaded fastener located at least partially within said internally threaded aperture of said clamping member, said threaded fastener operative for selectively establishing a clamping force between the drive shaft and the saw blade.
A saw blade clamping arrangement for a power tool of the type including a housing, a drive shaft mounted for reciprocating motion relative to the housing, and a saw blade releasably interconnected with the drive shaft for motion along a cutting axis, the saw blade clamping arrangement comprising:
- a clamping body interconnected to the drive shaft;
- a control element interconnected to said clamping body and rotatable about an axis perpendicular to the cutting axis between first and second positions for selectively establishing a clamping force between the drive shaft and the saw blade;
- and
- a sleeve surrounding said control element, said sleeve operative to selectively prevent rotation of said control element.
Dependencies are inferred from the claim text.