Abstract: A power injector 10 that includes a solenoid 23 that moves a piston to cause a liquid to be injected via the needle 13. A shroud 27 engages a switch 28 to cause electric energy to be delivered to the solenoid 24 to cause actuation thereof.

Abstract: A power injector 10 that includes a solenoid 23 that moves a piston to cause a liquid to be injected via the needle 13. A shroud 27 engages a switch 28 to cause electric energy to be delivered to the solenoid 24 to cause actuation thereof.

Abstract: An applicator (33) to deliver viscous liquids such as cream, mayonnaise or mustard. The applicator (33) includes a cylinder assembly (25) which receives a piston (4). The cylinder assembly (25) separates a pair of chambers (26, 27). The piston (4) includes a one-way valve (3) which is resiliently deflectable from apertures (28) in the piston to provide for the flow of liquid from the chamber (26) to the chamber (25). An inlet extends to the chamber (26) while an outlet valve (1) communicates with the chamber (24). This arrangement minimizes hand pressure required by an operator to manipulate the applicator (30) in delivering the viscous liquid.

Abstract: An applicator (10) to deliver a liquid via a needle (20). The applicator (10) includes a shroud (44) which cooperates with a trigger (41) and trigger lock (52) so that the needle (20) is only exposed upon actuation of the trigger (41) and liquid is only injected when the shroud (44) is retracted to a position at which a desired length of the needle (20) has penetrated.