Abstract:
A piston pump which permits advantageous operation over both short stroke piston movement and long stroke piston movement by variation of the piston chamber length.
Abstract:
The present invention provides a positive displacement rotary vane mixing pump with an air inlet and an inlet for foamable fluid and an outlet from a discharge sector of the pump for discharging a mixture of air and liquid to a foam generator.
Abstract:
A method of controlling operation of a mechanism, preferably a dispenser (10), having a removable component (12) comprising the steps of measuring electromagnetic radiation passing through a waveguide (53) carrying at least in part on the removable component and permitting operation of the mechanism only when the measured electromagnetic radiation corresponds with one or more pre-selected parameters. Preferably, the method involves directing emitted electromagnetic radiation with pre-selected input parameters selected from a plurality of input parameters.
Abstract:
A piston pump dispenser having a reciprocating piston pump arrangement which in a dispensing stroke dispenses fluid from an outlet and in a charging stroke draws fluid from a reservoir and also draws back fluid from the outlet.
Abstract:
A urinal discharge pipe assembly comprising a discharge pipe (18) having a passageway therethrough from an inlet in communication with a urinal discharge outlet and an outlet in communication with a urine disposal system, a foam dispensing device (50) having a foam outlet open into the passageway for discharge of an allotment of foam into the passageway between the inlet and the outlet adequate to form a temporary foam plug across the passageway blocking the passageway.
Abstract:
An automatically controlled apparatus (10) whose operation is controlled at least in part by the input of a signal that an object is sensed in a selected position relative the apparatus, the apparatus having an emitter (63) to emit electromagnetic radiation and a sensor (54) to sense electromagnetic radiation emitted by the emitter which is reflected off an object suitably positioned relative the apparatus, comprising a carriage member (220) mounted to the apparatus for relative pivoting about a pivot axis (234), the emitter (53) and sensor (54) carried by carriage member (220), the emitter (53) being generally directional emitting radiation to emanate outwardly from the emitter generally along a longitudinal emission axis, the sensor (54) being generally directional and sensing radiation which emanates generally along a longitudinal sensing axis terminating in the sensor, the emission axis and the sensing axis generally disposed in a common plane which includes the horizontal axis.