Abstract: A system for filling pre-charged aerosol cans comprising a frame, a power actuator on the frame having an output member that extends forcibly downwardly through a stroke of fixed length and retracts upwardly, a combined reservoir and filling head supported in the frame generally below the output member, the filling head having a cylindrical dispensing bore and an outlet below the bore adapted to be coupled to the valve of the aerosol can, a dispensing piston with a lower face operable in the bore to create hydraulic pressure on liquid received in the bore from the reservoir, a set of cooperating elements for coupling a dispensing piston to the output member selectively at a plurality of predetermined fixed spacings from the output member, whereby the volume of fluid displaced from the dispensing chamber by the dispensing piston is regulated to fill cans of different capacity while the output member of the power actuator traverses its stroke of constant length.

Abstract: A system for filling pre-charged aerosol cans comprising a frame, a power actuator on the frame having an output member that extends forcibly downwardly through a stroke of fixed length and retracts upwardly, a combined reservoir and filling head supported in the frame generally below the output member, the filling head having a cylindrical dispensing bore and an outlet below the bore adapted to be coupled to the valve of the aerosol can, a dispensing piston with a lower face operable in the bore to create hydraulic pressure on liquid received in the bore from the reservoir, a set of cooperating elements for coupling a dispensing piston to the output member selectively at a plurality of predetermined fixed spacings from the output member, whereby the volume of fluid displaced from the dispensing chamber by the dispensing piston is regulated to fill cans of different capacity while the output member of the power actuator traverses its stroke of constant length.

Abstract: Filling apparatus for female valve type precharged aerosol cans includes an improved check valve construction that effectively reduces leakage and blow back while being both simple and economical. The valve comprises a seat formed of PTFE in the configuration of an O-ring. A can carrier assembly below the filling head supports the can in coupled relation with the filling head. The can carrier utilizes a relatively short compression spring to lift the can into its coupled relationship with the filling head and to laterally stabilize the lower end of the can without auxiliary guides and the like such that the carrier avoids the need for extraneous manipulation of elements other than the can itself when the can is being loaded or unloaded into the apparatus and the carrier cannot be jammed by spilled material.

Abstract: Apparatus for injecting material into an aerosol spray can that includes an improved can and pumping cylinder support arrangement. The arrangement simplifies the steps necessary to load and unload a can and offers a simplified construction for improved durability. The disclosed apparatus is compatible with cans of different size and affords a cabinet to contain the pumping process.

Abstract: An apparatus for filling a pressurized can is provided that includes a pumping assembly having a piston for driving a liquid into the can. A cabinet encloses the pumping assembly and has a door which provides access to the pumping assembly. A first embodiment of the apparatus includes a manual lever arm assembly for driving the pumping assembly. A second embodiment of the apparatus includes a powered pneumatic cylinder for driving the pumping assembly and a control circuit for cycling the pneumatic cylinder. Preferably the control circuit includes a control valve for alternately supplying pneumatic fluid to upper and lower spaces of the pneumatic cylinder and a pair of accumulators for alternating the control valve. A third embodiment of the apparatus includes automatic means controls for driving the pumping assembly a selected number of piston cycles.

Abstract: An aerosol can containing a liquid propellant is placed on a can support platform (44). An operator actuated fluid control switch (84) provides pneumatic fluid or compressed air to a pneumatic cylinder (46) which continuously biases the aerosol can upward into engagement with a reservoir outlet (66) of a liquid reservoir (60). A sensing switch (52) senses movement of the can support, hence, the aerosol can. An operator actuated start valve (92) enables compressed air to be supplied cyclically (78a, 78b, 96) to a pump pneumatic cylinder (70). A pump (74) driven by the cylinder cycles a preselected number of times as counted by counter (90) to pump a preselected amount of liquid from the reservoir through the reservoir outlet and into the aerosol can.