Apparatus for delivering liquid under pressure

Claim 1

An apparatus for delivering a liquid matieral under pressure comprising: a base; a source of mechanical energy mounted on said base; a diaphragm pump mounted on the said base and being drivingly connected to said source of mechanical energy, said diaphragm pump including, an annular reservoir tank for holding a pump liquid, said annular reservoir tank having a central open portion, a pump cylinder positioned in the central open portion of the annular reservoir tank, and a pump piston movably mounted in the pump cylinder for pumping the pump liquid; a circulatory system connected to the pump cylinder and to the reservoir tank for carrying circulating pump liquid between said cylinder and said tank; an air check valve connected to the circulatory system to allow air to be pulled into the circulatory system; a foldable container support mounted on the base; and a liquid material container removably mounted in the container support, said container being releasably connected to the diaphragm pump, said container including a valve seat mounted at the bottom of the container, a valve body removably engageable with the valve seat for control of flow of liquid material from the container, and a valve stem connected to the body and extending exteriorly of the container to operate the valve body.

Claim 2

An apparatus for delivering a liquid matieral under pressure comprising: a base; a source of mechanical energy mounted on said base; a diaphragm pump mounted on the said base and being drivingly connected to said source of mechanical energy, said diaphragm pump including, an annular reservoir tank for holding a pump liquid, said annular reservoir tank having a central open portion, a pump cylinder positioned in the central open portion of the annular reservoir tank, and a pump piston movably mounted in the pump cylinder for pumping the pump liquid; a circulatory system connected to the pump cylinder and to the reservoir tank for carrying circulating pump liquid between said cylinder and said tank; an air check valve connected to the circulatory system to allow air to be pulled into the circulatory system; a foldable container support mounted on the base; and a liquid material container removably mounted in the container support, said container being releasably connected to the diaphragm pump, said container including a valve seat mounted at the bottom of the container, a valve body removably engageable with the valve seat for control of flow of liquid material from the container, and a valve stem connected to the body and extending exteriorly of the container to operate the valve body.

Claim 17

An apparatus for delivering liquid material under pressure comprising; a base, a source of mechanical energy mounted on said base, a diaphragm pump mounted on said base and being drivingly connected to said source of mechanical energy for pumping the liquid material, said diaphragm pump including a reservoir tank and a cylinder having a piston reciprocably mounted therein, a circulatory system connected to the cylinder and the reservoir tank, a foldable container support hingedly mounted on the base, and a liquid material container removably mounted in the container support and being releasably connected to the diaphragm pump to provide liquid material to be pumped under pressure by the diaphragm pump.

Claim 18

An apparatus for delivering liquid material under pressure comprising; a base, a source of mechanical energy mounted on said base, a diaphragm pump mounted on said base and being drivingly connected to said source of mechanical energy for pumping the liquid material, said diaphragm pump including a reservoir tank and a cylinder having a piston reciprocably mounted therein, a circulatory system connected to the cylinder and the reservoir tank, a foldable container support hingedly mounted on the base, and a liquid material container removably mounted in the container support and being releasably connected to the diaphragm pump to provide liquid material to be pumped under pressure by the diaphragm pump.

Claim 33

An apparatus for delivering a liquid material under pressure comprising: a base; a source of mechanical energy mounted on said base; a drive assembly connected to the source of mechanical energy; a diaphragm pump mounted on said base and being drivingly connected to said source of mechanical energy by said drive assembly, said diaphragm pump including, an annular reservoir tank for holding a pump liquid, said annular reservoir tank having a central open portion, a housing, a pump cylinder connected to said housing positioned in the central open portion of the annular reservoir tank, a pump piston movably mounted in the pump cylinder and being connected to the drive assembly, a diaphragm having its outer periphery sealing secured to the housing to define two chambers in said housing separated by the diaphragm, one of the chambers communicating with the pump cylinder, an inlet aperture in said housing communicating with the other of said chambers, a check valve connected to said inlet aperture to prevent liquid material from flowing out of said other chamber through the inlet aperture, said annular reservoir tank surrounding the cylinder, said housing having an inlet port communicating with said one chamber, an outlet port communicating with said one chamber, a plate mounted on said diaphragm and engageable with a portion of the housing to close off a portion of said one chamber; a circulatory system connted to the outlet port and to the reservoir tank for carrying circulating pump liquid between said cylinder and said tank; an air check valve connected to the circulatory system to allow air to be pulled into the circulatory system; a foldable container support mounted on the base, said foldable container support including, a base portion hingedly connected to the base, a first side wall hingedly connected to the base portion, a plurality of secondary side walls hingedly connected to the first side wall, said base portion having a width substantially equal to the combined thickness of said first wall and plurality of side walls, whereby folding of the first side wall and the plurality of secondary side walls together and folding of the first side wall relative to the base portion allows the side walls to be placed in an attitude substantially parallel to the base, a hose rack mounted on one of the side walls for releasably receiving and holding a flexible hose; a liquid material container removably mounted in the container support, said container being releasably connected to the diaphragm pump, said container including, a valve seat mounted at the bottom of the container, a valve body removably engageable with the valve seat for control of flow of liquid material from the container, a valve tube connected to the valve seat, said valve tube extending exteriorly of the container, a valve stem connected to the body and extending exteriorly of the valve tube, a nipple connected to the bottom of the valve seat, and a nipple receptacle connected to the inlet aperture in the diaphragm pump housing, said nipple receptacle removably receiving the nipple.

Claim 34

An apparatus for delivering a liquid material under pressure comprising: a base; a source of mechanical energy mounted on said base; a drive assembly connected to the source of mechanical energy; a diaphragm pump mounted on said base and being drivingly connected to said source of mechanical energy by said drive assembly, said diaphragm pump including, an annular reservoir tank for holding a pump liquid, said annular reservoir tank having a central open portion, a housing, a pump cylinder connected to said housing positioned in the central open portion of the annular reservoir tank, a pump piston movably mounted in the pump cylinder and being connected to the drive assembly, a diaphragm having its outer periphery sealing secured to the housing to define two chambers in said housing separated by the diaphragm, one of the chambers communicating with the pump cylinder, an inlet aperture in said housing communicating with the other of said chambers, a check valve connected to said inlet aperture to prevent liquid material from flowing out of said other chamber through the inlet aperture, said annular reservoir tank surrounding the cylinder, said housing having an inlet port communicating with said one chamber, an outlet port communicating with said one chamber, a plate mounted on said diaphragm and engageable with a portion of the housing to close off a portion of said one chamber; a circulatory system connted to the outlet port and to the reservoir tank for carrying circulating pump liquid between said cylinder and said tank; an air check valve connected to the circulatory system to allow air to be pulled into the circulatory system; a foldable container support mounted on the base, said foldable container support including, a base portion hingedly connected to the base, a first side wall hingedly connected to the base portion, a plurality of secondary side walls hingedly connected to the first side wall, said base portion having a width substantially equal to the combined thickness of said first wall and plurality of side walls, whereby folding of the first side wall and the plurality of secondary side walls together and folding of the first side wall relative to the base portion allows the side walls to be placed in an attitude substantially parallel to the base, a hose rack mounted on one of the side walls for releasably receiving and holding a flexible hose; a liquid material container removably mounted in the container support, said container being releasably connected to the diaphragm pump, said container including, a valve seat mounted at the bottom of the container, a valve body removably engageable with the valve seat for control of flow of liquid material from the container, a valve tube connected to the valve seat, said valve tube extending exteriorly of the container, a valve stem connected to the body and extending exteriorly of the valve tube, a nipple connected to the bottom of the valve seat, and a nipple receptacle connected to the inlet aperture in the diaphragm pump housing, said nipple receptacle removably receiving the nipple.