SANITIZABLE PISTON PUMPS AND DISPENSING SYSTEMS INCORPORATING THE SAME
First Claim
1. A piston pump for dispensing ingredients of cosmetic preparations and that may be easy disassembled for cleaning and sanitization purposes, the piston pump being detachably connected to an outlet port of a cosmetic ingredient package, the piston pump comprising:
- a valve block comprising an inlet port threadably connected to a nipple which is detachably connected to the outlet port of the cosmetic ingredient package, the valve block further comprising a piston port threadably detachably connected to a cylinder and an outlet port that sealably receives a valve stem, the inlet port, outlet port and piston port being in fluid communication with one another upon removal of the valve stem from the valve block, the valve stem comprising an intake passage and an output passage, the cylinder slidably receiving a piston, the cylinder comprising a distal end threadably connected to the piston port of the valve block and a proximal end, the valve stem being detachably connected to an actuator, the actuator capable of moving the valve stem to an intake position where the valve stem blocks the outlet port of the valve block and the valve block blocks the output passage of the valve stem and intake passage of the valve stem provides communication between the nipple and the piston port thereby permitting flow from the package, through the nipple, through intake passage of the valve stem, through the piston port and into the cylinder upon movement of the piston towards the proximal end of the cylinder, the actuator further being capable of moving the valve stem to a dispense position where the valve stem blocks the inlet port of the valve block and the valve block blocks the intake passage of the valve stem and the output passage of the valve stem is in communication with the cylinder thereby permitting flow from the cylinder, through the output passage of the valve stem and out the valve stem upon movement of the piston towards the distal end of the cylinder.
1 Assignment
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Accused Products
Abstract
A sanitizable piston pump for dispensing ingredients of cosmetic preparations and other sanitary mixtures is shown and described. The pump includes a valve block including an inlet port threadably connected to a nipple which is detachably connected to an outlet port of a flexible package. The valve block further includes a piston port threadably connected to cylinder and an outlet port that sealably receives a valve stem. The inlet port, the outlet port and the piston port are in fluid communication with one another upon removal of the valve stem from the valve block. The valve stem includes an intake passage and an output passage. The cylinder slidably receives a piston. Both the piston and valve stem are connected to separate actuators. The actuator connected to the valve stem moves the valve stem into one of either an intake position for withdrawing fluid into the cylinder or a dispense position for pumping fluid out of the cylinder and out the outlet of the valve stem. A disposable plastic piston pump is also disclosed. Further, a lever mechanism for quickly and easily releasing a flexible package from the nipple connected to the valve block of the disclosed piston pumps is also shown and described.
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Citations
31 Claims
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1. A piston pump for dispensing ingredients of cosmetic preparations and that may be easy disassembled for cleaning and sanitization purposes, the piston pump being detachably connected to an outlet port of a cosmetic ingredient package, the piston pump comprising:
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a valve block comprising an inlet port threadably connected to a nipple which is detachably connected to the outlet port of the cosmetic ingredient package, the valve block further comprising a piston port threadably detachably connected to a cylinder and an outlet port that sealably receives a valve stem, the inlet port, outlet port and piston port being in fluid communication with one another upon removal of the valve stem from the valve block, the valve stem comprising an intake passage and an output passage, the cylinder slidably receiving a piston, the cylinder comprising a distal end threadably connected to the piston port of the valve block and a proximal end, the valve stem being detachably connected to an actuator, the actuator capable of moving the valve stem to an intake position where the valve stem blocks the outlet port of the valve block and the valve block blocks the output passage of the valve stem and intake passage of the valve stem provides communication between the nipple and the piston port thereby permitting flow from the package, through the nipple, through intake passage of the valve stem, through the piston port and into the cylinder upon movement of the piston towards the proximal end of the cylinder, the actuator further being capable of moving the valve stem to a dispense position where the valve stem blocks the inlet port of the valve block and the valve block blocks the intake passage of the valve stem and the output passage of the valve stem is in communication with the cylinder thereby permitting flow from the cylinder, through the output passage of the valve stem and out the valve stem upon movement of the piston towards the distal end of the cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16, 17)
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9. A piston pump for dispensing ingredients of cosmetic preparations and that may be easy disassembled for cleaning and sanitization purposes, the piston pump being detachably connected to an outlet port of a cosmetic ingredient package, the piston pump comprising:
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a valve block comprising an inlet port threadably connected to a nipple which is detachably connected to the outlet port of the cosmetic ingredient package, the valve block further comprising a piston port threadably connected to a cylinder and an outlet port that sealably receives a valve stem, the valve block further comprising an intake passage and an output passage, the intake and output passages of the valve block being disposed within the piston port, the inlet port, outlet port, piston port and intake and output passages of the valve block being in fluid communication with one another upon removal of the valve stem from the valve block, the valve stem comprising an intake passage and an output passage, the cylinder slidably receiving a piston, the cylinder comprising a distal end threadably connected to the piston port of the valve block and a proximal end, the valve stem being detachably connected to an actuator, the actuator capable of moving the valve stem to an intake position where the valve stem blocks the output passage of the valve block and the valve block blocks the output passage of the valve stem and the intake passage of the valve stem is in alignment with the intake passage of the valve block thereby permitting flow from the package, through the nipple, through intake passages of the valve stem and valve block and into the cylinder upon movement of the piston towards the proximal end of the cylinder, the actuator further being capable of moving the valve stem to a dispense position where the valve stem blocks the intake passage of the valve block and the valve block blocks the intake passage of the valve stem and the output passage of the valve stem is in alignment with the output passage of the valve block thereby permitting flow from the cylinder, through the output passages of the valve block and valve stem and out the valve stem upon movement of the piston towards the distal end of the cylinder. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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18. A disposable piston pump for pumping material from a package, the pump comprising:
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a valve block comprising a nipple which is detachable detachably connected to the outlet port of the package, the valve block further comprising a piston port connected to a cylinder and an outlet port, the valve block further comprising a check valve disposed in the nipple permitting flow from the package through the inlet port and not vice versa, the valve block also comprising a check valve disposed in the outlet port of the valve block permitting flow from the cylinder through the outlet port and not vice versa, the cylinder slidably receiving a piston, the cylinder comprising a distal end connected to the piston port of the valve block and a proximal end, the valve block being fabricated from injection molded plastic, the cylinder being fabricated from injection molded plastic. - View Dependent Claims (19, 20)
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21. A piston pump for dispensing ingredients of cosmetic preparations and that may be easy disassembled for cleaning and sanitization purposes, the piston pump being detachably connected to an outlet port of a cosmetic ingredient package, the piston pump comprising:
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a valve block comprising an inlet port detachably connected to a nipple which is detachably connected to the outlet port of the cosmetic ingredient package, the valve block further comprising a piston port detachably connected to a cylinder and further comprising an outlet port that sealably receives a valve stem, the valve stem comprising an intake passage and an output passage, the valve stem being detachably connected to an actuator, the actuator capable of moving the valve stem to an intake position where the valve stem blocks the outlet port of the valve block and the valve block blocks the output passage of the valve stem and intake passage of the valve stem provides communication between the nipple and the piston port thereby permitting flow from the package, through the nipple, through intake passage of the valve stem, through the piston port and into the cylinder, the actuator further being capable of moving the valve stem to a dispense position where the valve stem blocks the inlet port of the valve block and the valve block blocks the intake passage of the valve stem and the output passage of the valve stem is in communication with the cylinder. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification