Abstract: A double acting trigger pump on a container includes a cylinder and a piston reciprocal therein that cooperate in providing a primary pump chamber. An inlet valve regulates product being drawn into the primary pump chamber. A double piston seal is at the inner end of the piston and includes an outlet valve coaxial with a longitudinal bore in the piston. A supplemental pump chamber that also communicates with the bore is defined between outer surfaces of the piston and inner surfaces of the cylinder as well as the double piston seal and a rearward retaining ring. During the pressure stroke of the piston, product is dispensed from the primary pump chamber out from the pump and fills the supplemental pump chamber. During the suction stroke of the piston, product is drawn into the primary pump chamber from the container and product is discharged from the supplemental pump chamber out from the pump.

Abstract: A dispensing pump for dispensing product from a container serves as a container closure. The pump has a cylinder having an inner shell open at its rear end and closed at a forward end and an outer shell surrounding the inner shell and defining a cavity therebetween. A reciprocally mounted piston is in the inner shell and defines a pump chamber therewith. Inlet port means includes a passage in the outer shell for communication the container interior with the pump chamber during the suction stroke to permit product to pass through the inlet port into the cavity and then into the pump chamber. A vent replaces product removed from the container interior into the pump chamber with air. An outlet valve is provided for opening the outlet port during the compression stroke and for closing the outlet port during the suction stroke; and an inlet valve is provided for opening the inlet port during the suction stroke and for closing the inlet port during the compression stroke.

Abstract: A dispensing pump includes an outer cylinder and an inner piston which cooperate in defining a pump chamber. The cylinder includes an inlet port and an outlet port which are sequentially opened and closed by the piston. In addition, a vent for the container interior to replace discharge product with air is also adapted to be opened and closed incident to the movement of the piston. Sealing rings are provided between the piston and cylinder, the location of which, determines the amount of product and air drawn into the pump chamber as well as the characteristics of the dispensing pattern of the product discharged by the pump. During part of the suction stroke as well as the compression stroke, both the inlet and outlet ports are simultaneously closed by the piston thereby respectively creating a predetermined negative pressure and positive pressure within the pump chamber.

Abstract: A pump system having two moving parts consisting of a cylinder with a piston therein defining a pump chamber. An inlet part communicates with a dip tube which extends into a container and permits the product in the container to pass into the pump chamber. An outlet port allows for the product thus drawn to be dispensed from the pump chamber. The pump is actuated by pressure directed axially on the piston, forcing it into the cylinder. Fitted with a return device the piston is allowed to reciprocate in the cylinder alternating between a suction and compression stroke. During the suction stroke product is drawn into the pump chamber by way of the inlet port while the compression stroke provides for the dispensing of the product thus drawn via the outlet port. The system is equipped with passages and channels sufficient to accomplish the operation of drawing and dispensing the product in addition to providing for the venting of the container.

Abstract: A reversible trigger actuated dispensing pump employs a reciprocal plunger having a passage for communication with a pump at one end and a nozzle at the other end. The trigger includes a body portion with structure to cooperate with the plunger to permit the trigger to be releasably and pivotally mounted on the plunger in at least two angularly spaced positions. An actuating gripping portion extends from the body portion and from the pump when the trigger is mounted thereon. In this manner, when the trigger is mounted on the plunger and the actuating gripping portion is pivoted, the body portion will pivot and reciprocate the plunger and operate the dispensing pump.

Abstract: A pump actuating system is associated with a container having a pump for dispensing the container contents. The system includes a housing mounted on the neck of the container and at the same time the housing serves to couple the pump with the outlet end of the container. The pump is of the reciprocal type having a reciprocating plunger which also serves to direct the container contents away from the pump. A conduit couples with the pump outlet and serves to direct the pumped container contents either coaxially with or transversely of the axis of the neck of the container in accordance with the selected dispensing pattern. An actuator is mounted by the housing and is coupled with the conduit for facilitating the actuation of the pump between a first pump position at which the container contents are drawn into the pump chamber and a second position at which the contents are expelled therefrom. The actuator is integrally molded so as to include a trigger, toggle and guides.

Abstract: A dispensing pump including a double trigger mechanism for actuating a reciprocal plunger having a through passage for communication with the pump at one end and a nozzle at the other end. The trigger mechanism includes a body portion and structure on the body portion for pivotally mounting the trigger on the plunger. A pair of angularly spaced handles extend from the body portion and extend from the plunger and pump to permit the grasping thereof. The trigger mechanism is interengaged with the plunger so that movement of either handle or in a further embodiment both handles will pivot the body portion and move the plunger in one direction and release of the handle will permit the plunger to reciprocate to the original position by pivoting the body portion and handle to the original position.

Abstract: A multiple purpose nozzle includes a tubular member having a bore and communicating passage network therethrough and through which material to be dispensed is adapted to pass. An adjustable cap is coupled with the tubular member having an orifice in the end wall thereof of predetermined configuration. The cap is coupled to the tubular member so that it may be shifted between shut-off and open positions. In addition the cap is provided with a passage which form part of the passage network when the cap is shifted to the open position. In the closed position the cap passage is not aligned with the passage network of the tubular member and thus prevents the material from being dispensed. The cap is adapted to assume at least one other and open position at which the cap passage is aligned with the passage network and the material to be dispensed is adapted to pass in a selected predetermined discharge pattern through the bore passage network and orifice.

Abstract: A safety cap for a container including an outer cover having an end wall and a peripheral skirt depending therefrom with a band mounted in the cover. The band and cover are designed for rotatably fastening and unfastening the cap on a container. The band and cover include lock structure to permit rotation of the band and cover onto the container into the fastened position and to prevent rotation of the band and cover into the unfastened position with respect to the container. Furthermore, release structure is provided on the band and cover and is adapted to be shifted between an inactive position whereupon it does not effect the operation of the locking structure and an active position whereupon it deactivates the locking structure and permits the band and cover to rotate into the unfastened position.

Abstract: A manually operable liquid dispensing pump for use and incorporation on a container for liquid to be dispensed includes a component retaining body and a tubular member carried by the body having a flexible wall defining a variable volume pump chamber adapted to assume a fully distended position of maximum volume and a collapsed position of lesser volume. The retaining body has an aperture therethrough and a portion of the tubular member extends through the aperture to permit manual engagement therewith. Depressing the projection flexes the wall of the tubular member and reduces the volume of the pump chamber thereby pressurizing liquid to be dispensed in the pump chamber and, at the same time, with an inlet valve closed, causes an outlet to open whereupon the liquid in the pump chamber is adapted to flow into an outlet port and be dispensed therefrom.

Abstract: A nozzle located at the discharge end of a container includes a tubular member and a cap thereon. The tubular member has a passage in communication with the container interior for passage therethrough of the container contents to be dispensed. The cap is adjustably mounted on the tubular member and is capable of being turned to a first position at which the passage of the tubular member is closed to prevent the passage of the material to be dispensed. The cap is adapted to be turned to a plurality of discharge positions depending upon the discharge pattern desired. In these positions the passage is open and is placed in communication with a discharge opening and surrounding recesses in the closed end of the cap through a passageway defined by cooperating surfaces of a slotted core portion and surrounding slotted core skirt of the tubular member and a slotted boss cooperating with the core and skirt of the tubular member when the cap is assembled to the tubular member.

Abstract: A closure for a container including a cover half with base and cover portions and a spout half with base and spout portions. A pouring orifice extends through the spout portion of the spout half. An integral hinge connects the cover half to the spout half so as to form an integral one-piece closure with the halves having been pivoted into engagement. Mating surfaces are on the bases of the cover and spout halves to facilitate cooperative interengagement therebetween and to form the closure with the cover in position for removable engagement with the spout so as to permit opening and closing of the pouring orifice as desired.