Realex Corporation

Calmar Inc.

Pittway Corporation

David G Moore

Donald D Foster

Efrem M Ostrowsky

Jean-Pierre Lina

John M Ford

Robert N Hills

Phil L Nelson

Herve Pennaneach

A finger-operated pump is provided with a pump chamber and a fixed supply conduit communicating with the pump chamber. A movable sealing conduit is adapted to slidably and sealingly engage the supply conduit in a telescoping relationship. A primary piston is operably disposed in the chamber and defines a discharge passage out of the pump chamber. A poppet having a primary valve means for occluding the discharge passage is biased against the primary piston by a spring. The poppet has a secondary valve means for occluding flow through the sealing conduit that engages the poppet through a lost motion arrangement which is defined in part by the spring and which permits a limited degree of relative movement between the poppet and the sealing conduit.

Atomizing pump

An elastomeric piston member of a product dispenser for semi-viscous liquids includes integrally molded priming valve structure as well as check valve structure. The priming valve comprises a number of generally flat, triangular segments arranged around the periphery of an outlet conduit leading from a pumping chamber, and during a pumping stroke of the piston member, outermost tips of each segment deflect laterally to allow discharge of products from the chamber. The triangular segments are molded in an open or spaced apart orientation to facilitate manufacture, and are biased by ribs of a discharge spout toward a closed, inclined orientation in contact with adjacent segments once the dispenser is assembled.

Elastomeric valve and piston structure for product dispenser

A dispenser for lotions, creams and the like has an annular collar in the form of a rotatable cam ring which may be turned to rock an actuator toward a dispensing, open position or toward a closed, non-dispending position. The cam ring has cam tracks that support the actuator when in its open, dispensing position so that finger pressure exerted on the actuator to pump products from the dispenser does not inadvertently rock the actuator toward its closed position. In preferred forms of the invention, a wall section formed as part of a shroud surrounding the actuator is yieldably biased in an inwardly direction, and snaps over the outlet of the actuator to close the outlet channel once the actuator has been pivoted toward its closed, non-dispensing position.

Product dispenser having actuator locking collar and shroud

In a manually operated dispenser especially suited for striped toothpaste products and the like the reciprocable pumping piston is provided with a concave, product-engaging face that gently, yet forcibly, directs the product in a smooth, laminar flow out of the pump chamber and into the discharge spout when the piston is depressed through a pumping stroke so that stripes in the ribbon of toothpaste issuing from the spout are well defined and maintained in an aesthetically pleasing manner. The cooperating floating takeup piston at the opposite end of the chamber from the pumping piston is provided with a convex dome that becomes complementally received within the concavity of the pumping piston when the contents of the dispenser are nearly depleted, thereby maximizing the degree to which the dispenser is emptied.

Dispenser for striped viscous products

The actuating lever of the dispenser has a rigid valve flap integral therewith which covers the spout outlet to close the same when the actuating lever is in its normal, undepressed position but which then lifts off the outlet to open the same when the lever is depressed in a pumping stroke. One embodiment employs a reciprocable pumping piston at one end of the dispenser body and a free-floating take-up piston at the opposite end of the body which responds to the evacuationof material within the pump chamber to take up the space otherwise occupied by the evacuated product. Another embodiment utilizes a pumping piston which starts at the lower end of the dispenser body and is progressively drawn up toward the opposite end during successive pumping strokes by a rod connected to the actuating lever.

Pasty product dispenser having combination actuator and outlet valve

The dispensing pump has an actuator button which is depressible immediately alongside of the stationary discharge spout of the pump so that, when the button is fully extended in its standby position, its upper surface is approximately flush with the upper end extremity of the spout. A locking cover on the button may be slid into a closed position at this time covering the open end of the spout to both seal the latter and securely lock the button against accidental depression. An alternative embodiment provides a discharge passage within the button itself which may be opened and closed by appropriate positioning of a slide cover carried by the button.

Orifice cover slide actuator lock for viscous product dispenser

The depressible actuator of the pump has a closure plug hingedly and integrally attached thereto in association with an integral toggle so that the plug may be snapped between a pair of opposite over-center positions about the hinge point. In one of the positions, the plug may be inserted snuggly into the otherwise open end of the dispensing spout of the pump so as to close and seal the latter, while in the other over-center position the plug is snapped back into a fully clearing relationship with the spout to not only open the latter but also remain out of the path of discharging travel of product emanating from the spout. When the plug is securely received within the spout, it cannot be pulled out merely by depressing the actuator, and thus the actuator becomes effectively locked against depression at that time.

Snap-action orifice sealing plug for viscous product dispenser

The atmospheric pressure-operated take-up piston of the dispenser is provided with releasable locking structure which retains the piston prior to first intentional actuation of the dispenser against jarring movements tending to pressurize the contents and promote leakage during shipment and storage. Once the piston has been intentionally unlocked from its starting position at one end of the dispenser, it is free to travel under the influence of atmospheric pressure to take up space left vacant by discharged product. Several different forms of structure means for the take-up piston are disclosed.

Growing community of inventors

Lee's Summit, MO, United States of America

David G Moore