초록 ▼

Sprayer for fluid product in which a hand-actuated trigger forces a hollow piston mounted to move in vertical reciprocating fashion in a stationary tubular accumulator, against the compression of a spring. The product is forced upward and out through a swirl chamber adjacent the spray nozzle. Additi

Sprayer for fluid product in which a hand-actuated trigger forces a hollow piston mounted to move in vertical reciprocating fashion in a stationary tubular accumulator, against the compression of a spring. The product is forced upward and out through a swirl chamber adjacent the spray nozzle. Additional product is siphoned up into the accumulator by the partial vacuum created by the return of the piston to its rest position. Alternative embodiments, including both a vertically and horizontally directed sprayer, feature an annular flexible flange seating against an annular skirt below a swirl chamber, which keeps air out of the product chamber and deflects inwardly to release product under pressure. Additionally, a horizontally-directed spray-head may be attached to the vertical trigger sprayer for the purpose of converting the latter to a horizontal sprayer. Further embodiments comprise modification of the annular flexible flange including separate flange-type components which may be force-fitted into the accumulator top, and are constructed to tangentially seal against the annular skirt and deflect to release product. A dome and stopper structure may be used to replace the annular flexible flange, which acts as a diaphragm flexing under pressure to release product. Due to the flexible flange which deflects to allow the product to enter the swirl chamber, the sprayer may be used in an inverted position, provided a centrally-disposed siphon tube is removed.

대표청구항 ▼

A manually operated spray dispenser constructed in combination with the closure of a container of fluid product having an upwardly extending mouth, said dispenser comprising in combination: an accumulator housing forming in fixed relation to said closure an outer tubular wall constructed to extend u

A manually operated spray dispenser constructed in combination with the closure of a container of fluid product having an upwardly extending mouth, said dispenser comprising in combination: an accumulator housing forming in fixed relation to said closure an outer tubular wall constructed to extend upwardly from the mouth of said container, said accumulator housing enclosing in integral coaxial relation an upper stationary tubular accumulator, and the mouth of said container enclosing in integral coaxial relation a lower stationary tubular member vertically spaced apart from said upper tubular accumulator; means for communicating between said lower stationary tubular member and the fluid in said container; a spray dispensing nozzle mounted in said accumulator housing in a spray button chamber in communication with said upper stationary tubular accumulator member; a hollow tubular piston having its upper and lower ends respectively disposed to move in vertically reciprocating relation in said upper stationary tubular accumulator and said lower stationary tubular member; an annular lateral enlargement connected to said hollow tubular piston intermediate between the upper and lower ends thereof, said annular lateral enlargement having an upper face and an underside; means comprising a check valve located in said hollow tubular piston intermediate between the upper and lower ends of said piston and responsive to a pressure differential between said ends to admit said fluid product from the lower end into the upper end of said hollow tubular piston; a helical coil-spring surrounding said upper stationary tubular accumulator and compressed between a fixed upper wall of said accumulator housing and the upper face of said annular lateral enlargement; a pivot mounted in horizontal relation to the outer tubular wall of said accumulator housing; trigger means mounted to rotate in a vertical plane about said pivot, said trigger means including a downwardly extended trigger arm, and horizontally extended lever means disposed to contact the underside of said annular enlargement and to move said hollow tubular piston vertically against the compression of said coil spring; and means for maintaining said container at substantially ambient pressure.