초록 ▼

A liquid dispenser having two separate sized dispensing chambers. The first being larger volume dispenser having a piston which is of variable stroke to move within a first chamber to draw liquid into the chamber and then to force the liquid out of said chamber. The second being a smaller volume dis

A liquid dispenser having two separate sized dispensing chambers. The first being larger volume dispenser having a piston which is of variable stroke to move within a first chamber to draw liquid into the chamber and then to force the liquid out of said chamber. The second being a smaller volume dispenser which comprises a second piston which is of variable stroke and moves within a bore in said first piston to draw liquid into said bore and to force liquid out of said bore.

대표청구항 ▼

A liquid dispenser comprising; a housing; an inlet to the housing; an outlet from said housing; a valve operably connected to said housing and being operable such that whenever in a first position said inlet is opened while at the same time said outlet is closed and whenever in a second position sai

A liquid dispenser comprising; a housing; an inlet to the housing; an outlet from said housing; a valve operably connected to said housing and being operable such that whenever in a first position said inlet is opened while at the same time said outlet is closed and whenever in a second position said inlet is closed while at the same time said outlet is opened; a first variable stroke piston, moveable within said housing, so as to draw liquid into said housing when said valve is in its first position and to force liquid out of said housing when said valve is in its second position; a bore located within said first piston; a second variable stroke piston moveable along said bore with or independently of said first piston and can draw liquid into said bore when moved independently of said first piston and said valve is in its first position and to force liquid in said bore out of said outlet of said housing when said valve is in its second position, said housing is generally tubular with a first adjustable gauge extending into said housing and adapted to be set such that reproducible qualities of liquid can be dispensed from said housing and a second adjustable gauge extending into said housing such that reproducible qualities of liquid of smaller quantities then the first quantities of liquid, can be discharged by said second piston.