Milwaukee Electric Tool Corporation

Graco Minnesota Inc.

Graco Inc.

Alexander L Kapelevich

William M Blenkush

Glen W Davidson

William A Elger

Kurt Limberg

A multi-stage planetary transmission includes a transmission housing and a first planetary stage at least partially positioned in a transmission housing. The first planetary stage includes a first stage ring gear, a first stage carrier, and a plurality of first stage planet gears supported by the first stage carrier. A motor output pinion is engaged with each of the first stage plant gears. The transmission further includes a second planetary stage positioned downstream of the first planetary stage to receive torque from the first planetary stage and a shift mechanism operable to move the first stage ring gear between a first position, in which the first stage ring gear is rotatably fixed relative to the transmission housing for enabling the first planetary stage, and a second position, in which the first stage ring gear is coupled for co-rotation with the first stage carrier for disabling the first planetary stage.

Multi-stage transmission for a power tool

An airless spray pump is provided with a single-acting piston pump which allows the use of a low-cost yoke drive. Motor and pump shaft are offset for most efficient force utilization.

Airless spray pump

An airless spray pump has a drive train is comprised of a motor having an output gear thereon which drives a combination gear assembly comprised of two gears mounted on a shaft which in turn drives a crank assembly which is comprised of a one-piece eccentric end gear molded together and mounted on a shaft which is supported at both ends to prevent cantilevering and attendant stresses. The crank assembly is offset from the vertical axis of the displacement pump in order to reduce side-loading thereon. A connecting rod is mounted via a pin directly to the top of the displacement rod of the reciprocating pump. Retainer pin clippingly retains the pin in the connecting rod and enables the pin to be removed for servicing without the use of tools other than potentially a screwdriver or other generic tool.

Growing community of inventors

Shoreview, MN, United States of America

Alexander L Kapelevich