Abstract: A liquid-dispensing pump arrangement permits positive setting into various full-stroke, stroke limited, and off positions by rotation of the dispensing head thereof. The arrangement includes a reciprocating pump having a dip tube, a pump body, and a depressible stem and which is supported in a screw cap or other closure. A pedestal on the screw cap has longitudinal detents on a circumferential surface thereof, and also has a helical ramp thereon extending at least part way around the stem. A finger-depressible push-button dispensing head atop the stem has a radial outlet nozzle and a depending skirt which overlaps the circumferential surface of the pedestal. Fins or vanes on the skirt are spaced apart and engage the detents on the pedestal. The vanes are resiliently flexible and normally engage the cutout detents to establish each rotational position, but can be deflected by manually turning the dispenser head so that the latter can be easily rotated to another desired position.

Abstract: The reciprocable plunger of a fluid dispenser is immobilized by a frangible strap extending about the plunger and engaging a locking ledge on the container cap. Severance of the strap unlocks the plunger and permits plunger reciprocation.

Abstract: Discharge valving for a liquid dispensing pump having a reciprocable plunger is in the form of a laterally extending bunsen valve having an annular spring washer which resiliently bears against an annular valve seat adjacent the discharge opening. The loading of the valve is controlled by valve positioning lugs between the top of the plunger and an overlying plunger head. The plunger may be immobilized in a fully raised position above the pump body or in a fully depressed position relative to the pump body by locking fingers positively deflected into and out of the path of reciprocation of a stop shoulder on the plunger head.

Abstract: A dispensing pump having a unitary plunger defining a main pump chamber and functioning as a discharge valve upon accumulation of pressure causing the plunger to shift open, includes a container vent which is positively sealed against leakage therethrough even upon nudging the plunger during storage, shipment and handling of the pump.The pump includes a fixed position and a reciprocable plunger head having a discharge passage, the inside of the head and the top of the piston being complementarily contoured for expelling accumulated air from the pump chamber directly out of the discharge during priming. Otherwise, the pump chamber may be placed in communication with a vent chamber which opens into the container through the vent so that any accumulated air in the pump chamber may be vented into the container as an aid in priming.The volume beneath the plunger head may be enclosed as an air chamber so that the air therein may be vented into the container upon opening the container vent to assist in pump priming.

Abstract: A sealing element for a snap-on fitment has spaced apart inner and outer skirts engageable with opposite sides of the container neck, an annular wall interconnecting the skirts and an extension from the annular wall forming a fitment engaging portion. An annular snap bead extends from the connecting annular wall to facilitate snap engagement with the fitment, and the engaging portion has an inner sealing surface and a seal bead adjacent its outer end. The connecting wall has an annular relieved section opening into the space between the skirts so that any distortions imposed upon the snap bead and upon the sealing surface as occasioned by any dimensional and/or shape irregularities in the container neck are reduced by the relief provided between inner and outer engagements with the container neck.

Abstract: A dispenser includes a cylindrical connecting portion, an internally threaded closure cap permanently attached to the connecting portion, and a container for fluid to be dispensed having an externally threaded neck in engagement with the cap. The connecting portion and the cap are interengaged for both effecting the permanent attachment and for producing a fluid-tight seal therebetween. An annular flexible lip on the cap slopes inwardly of the cap and toward the container into engagement with an annular flange provided on the connecting portion. The lip overlies the container neck and is forced into a tight sealing engagement with the connecting portion upon a tightening of the cap onto the container neck. The flange may likewise overlie the container neck so as to be forced into a tight sealing engagement therewith upon the tightening of the cap onto the container neck.

Abstract: A liquid dispenser, adapted to rest upon the bottom of a flush tank, includes a container having a quantity of the concentrated soluble material therein, and a closure forming a piston extending into the top opening of the container. The closure forms a liquid flow passage between the interior and exterior of the container and is adapted for shifting in response to the flush/fill modes of the tank cycle. The closure rises to its upper limit by flotation from entrapped air within the closure, retains liquid in an open cavity thereof and becomes fully submerged by the rising level of the tank liquid. As the closure rises, tank liquid enters the container through the flow passage for mixing with the chemical concentrate. During the flush mode of the tank, the closure falls by gravity and is augmented by the retained water in its cavity as the receding level of the tank liquid passes below the upper rim of the closure.

Abstract: A designer's triangle providing for the selection of angles from 15 to 90 degrees in a single implement, in increments of 15 degrees or less, and further including provisions for draft or taper angles to vary the aforesaid angles. Further embodiments include metric, fractional and tenth of inch embossed scales, protection against smudging, and marked or designated radii at a plurality of points on the triangle.

Abstract: In a dispensing pump including a reciprocable plunger having a locking finger on a pump body member and the cam on a control member rotatable relative thereto for immobilizing the plunger as an upper portion of the finger is deflected into the path of reciprocation of the plunger, another cam is provided on the control member for positively deflecting such upper portion out of such path of reciprocation so as to avoid complete reliance on the locking finger retracting from such path in a normal unstressed condition thereof.Alternatively, a stop shoulder on the plunger on which the free end of the locking finger bears to effect plunger mobilization may be beveled and the free end accordingly sloped so as to positively retract the locking finger out of the path of the stop shoulder upon plunger reciprocation.

Abstract: A fluid dispensing pump includes a pump plunger mounted for reciprocation in a pump cylinder, the plunger having a discharge passage extending therethrough and communicating with a discharge opening in a discharge head connected with the plunger which sealingly engages a retaining collar on a container closure during a lock-down position of the discharge head. A check valve in the discharge passage includes a cage surrounding a valve opening, and a lower end of the plunger sealingly engages a portion of the cage when in the lock-down position. The piston is arranged on the plunger to form an air space so as to prevent any hydraulic lock which would interfere with a full depression of the head into its lock-down position. The sealed locking engagement between the head and the retaining collar is capable of being unlocked by the provision of axially oriented unlocking cam faces for effecting disengagement upon relative rotation between the head and the collar.

Abstract: A liquid dispenser for a flush tank includes a dispensing closure in engagement with an open top container for axial movement relative thereto, the closure having discharge ports therein defining flow passages between the interior and exterior of the container and capable of being opened and closed during such axial movement. The closure includes a hollow cap having air vents therein, and a sleeve extending inwardly of the container so that liquid may flow during a tank refill operation through the ports and beneath the sleeve for thoroughly mixing with concentrated soluble material within the container before flowing into the cap while forcing the air through the vents. And, during a tank flushing operation, the mixed liquid is dispensed through the ports after it again mixes with the soluble material below the sleeve, the mixed liquid in the cap then being replaced by air through the vents during the discharge operation.

Abstract: A protective cover for swimming pools drains and the like. The cover is of a unitary construction and is preferably injection-molded from a flexible, tough, spring-like plastic. The cover includes an outer, annular rim designed to rest on a sub-main drain or the like. The main cover has no holes and features a generally sine wave or bellows spring design. The central portion is inwardly or downwardly curved, and forms a portion of a sphere having its center on a line normal to a plane passing through the main cover. The central portion is surrounded by another inwardly curved portion which preferably is provided on its underside with a circular projection extending normal to the plane of the cover to lend it mechanical rigidity. The outer main cover portion is upwardly curved and is connected to the ring portion through a plurality of stanchions in the form of vanes extending in radial directions.

Abstract: A dispensing pump of the type in which the discharge valve will open and will remain open only for such time as the pumping pressure is maintained above a predetermined minimum. The pump includes a unitary plunger unit of annular configuration, the inner-periphery of which cooperates with the pump piston to provide the main pump chamber, while its outer periphery cooperates with a socketed plunger head in the manner of a piston, to provide therewith a variable volume pressure accumulation chamber and to function as a pressure actuated discharge valve and shipping seal as well as a vent seal.

Abstract: A dispensing pump of the type in which the outlet valve will open and will remain open only when the pumping pressure is maintained above a predetermined minimum. The pump cylinder in which the pump piston reciprocates, constitutes a unitary part of the outlet valve and also communicates freely with expansible, contractable pressure accumulation chamber, defined in part by the outlet valve and in part by the stationary pump housing. The pump piston and the outlet valve of the unit are movable independently of each other, while the stationary outlet or discharge passage for the pump is placed in communication with the pressure accumulation chamber only when the pressure within that chamber is at or above the predetermined minimum above referred to.

Abstract: The discharge spout of an inverted container of liquid product to be dispensed is received in a sleeve, the upper end of which is threaded onto the container in outwardly spaced relation from the spout. A metering and sealing cup supported within the sleeve receives the spout, the arrangement being such that the sleeve may be rotated about its threaded connection to the container, either to bring the cup into sealing relation with the container spout or into dispensing relation with respect thereto. The cup normally maintains a supply of liquid above the level of the discharge opening of the spout lower end and, under proper pressure conditions, permits overflow of product through a discharge passage which establishes communication between the cup and the open lower end of the sleeve. The discharge is automatically controlled by alternate compression and decompression of air within the sleeve arising from rising and falling of the column of tank water therein, as the flush tank is flushed and refilled.

Abstract: A container of the chemical to be dispensed is supported in inverted position in the toilet flush tank with the mouth of the container opening downwardly. The dispensing closure is sealingly associated with and axially adjustable on the container around its mouth. The closure has an open lower end normally immersed in the water within the tank and separated by a partition from the metering chamber within the upper end of the closure communicating with the container mouth. The liquid is delivered by gravity into the metering chamber, to a depth to cover said mouth. Pressurized air delivered from the pump chamber into the upper portion of the metering chamber above the mouth exerts a pressure on the liquid within the metering chamber to force the same out through a discharge port and tube leading to the tank overflow pipe.