Blade change carrier device
OwnerJacob J Roachinventor
Life of this patent
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Abstract
The invention is essentially a quick-change blade carrier for a blade mounted to a rotary drive shaft (such as on a mower) has an internally threaded bore. The carrier includes a housing linked by its cap to the rotary drive shaft, and enclosing a blade-locking member having a blade-locking tip downstanding from its underside; the device also includes a locking means (such as a compression spring) to bias the blade-locking member (and tip) downward through a center hole in the blade held within a channel in the bottom of the housing.
Claims14
A device facilitating removal and mounting of a blade having an axial mounting hole for powering by a rotary drive shaft, the device comprising:
- (a) a housing having a bottom, a false floor defining an axial opening having the configuration of the axial mounting hole of the blade, and the housing having a sidewall slot-opening defining a channel accepting a central portion of the blade between the housing bottom and false floor, said axial opening of the false floor defining a passageway into said channel;
- (b) a blade-lock member having an axial tip acceptable to said axial opening, the axial tip downstanding toward said axial opening when said blade-lock member is in a raised position, and downstanding substantially into said channel and through the axial mounting hole of the blade when said blade-lock member is in a lowered position, said housing sidewall further comprising a lever port for accepting a lever for raising said blade-lock member to the raised position;
- and
- (c) a locking means comprising at least one compression spring between the cap and the blade-lock member for biasing the axial tip of the blade-lock member to the lowered position and locking the blade into said channel;
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- (d) a cap having a fastening means comprising an axial aperture accepting a drive-bolt which is rotatably fastened within a threaded axial bore of the rotary drive shaft linking the device to the rotary drive shaft.
A device facilitating mounting and removal of a blade having an axial mounting hole for powering by a rotary drive shaft, the device comprising:
- (a) a cylindrical housing having a bottom, a false floor defining an axial opening having the configuration of the axial mounting hole of the blade, and a sidewall slot-opening defining a transverse channel accepting the blade between the bottom and false floor, said axial opening defining a passageway into said channel;
- (b) a blade-lock disk comprising an underside including an axial tip acceptable to said axial opening, the axial tip downstanding toward said axial opening when said blade-lock disk is in a raised position, and the axial tip downstanding into said channel and through the axial mounting hole of the blade when said disk is in a first lowered position, said housing sidewall further comprising a lever port for accepting a lever for raising said blade-lock disk to the raised position;
- (c) a cap having a fastening means comprising an axial aperture accepting a drive-bolt rotatably fastened within an internally threaded axial bore of the rotary drive shaft and firmly linking said cap thereto, the circumference of said cap anchored within said housing;
- and
- (d) at least one compression spring between the cap and the blade-lock member for biasing the axial tip of the blade-lock disk to the lowered position and locking the blade into said channel.
Dependencies are inferred from the claim text.