초록 ▼

An improved variable proportioner is provided which includes a spring biased lost motion connection between the motor piston and the slave pump piston thus providing for accurate adjustability of the metering proportion as well as prevention of stalling of the slave piston against the front cylinder

An improved variable proportioner is provided which includes a spring biased lost motion connection between the motor piston and the slave pump piston thus providing for accurate adjustability of the metering proportion as well as prevention of stalling of the slave piston against the front cylinder wall. A pivotable connection of the toggle lever spring is also provided to reduce bending of the spring and to enhance its life span.

대표청구항 ▼

In a portable self-powered fluid proportioning device which comprises in combination: a fluid supply conduit means, a movable motor piston means, a fluid gating means disposed intermediate said fluid supply and said piston means to cause reciprocating movement of said motor piston means, a connectin

In a portable self-powered fluid proportioning device which comprises in combination: a fluid supply conduit means, a movable motor piston means, a fluid gating means disposed intermediate said fluid supply and said piston means to cause reciprocating movement of said motor piston means, a connecting rod means secured to said piston means for movement therewith, and a slave pump piston connected to said connecting rod for providing responsive reciprocatory movement of said slave pump piston within a pump cylinder, the improvement comprising: a spring biased lost motion connection, wherein said lost motion connection comprises a slot and pin arrangement, between said connecting rod and said slave pump piston in which said slave pump piston is continuously biased toward an end wall of said pump cylinder and is selectively movable away from said end wall by action of an adjustable connection between said connecting rod and said slave pump piston which permits an adjustable amount of movement of said connecting rod prior to effecting movement of said slave pump piston.