초록 ▼

A manually operated reciprocating fluid pump for securement to a container's mouth. The fluid pump comprises a disperser body, a closure cap, a seal assembly, and a priming check valve. The dispenser body has a pump mechanism, a discharge port, and a discharge liquid flow path providing fluid commun

A manually operated reciprocating fluid pump for securement to a container's mouth. The fluid pump comprises a disperser body, a closure cap, a seal assembly, and a priming check valve. The dispenser body has a pump mechanism, a discharge port, and a discharge liquid flow path providing fluid communication between the pump mechanism and discharge port. The closure cap is connected to the dispenser body and is configured for closing the mouth of the container. The seal assembly has a first portion and a second portion. The first portion is shaped and configured for preventing leakage between the closure cap and the mouth of the container when the closure cap closes the mouth of the container. The second portion has an intake port adapted for fluid communication with liquid contained in the container. The second portion of the seal assembly and the dispenser body define an intake liquid flow path providing fluid communication between the intake port and the pump mechanism. A check valve in the intake liquid flow path is configured for permitting fluid flow from the intake port to the pump mechanism and for checking fluid flow from the pump mechanism to the intake port. The second portion of the seal assembly comprises at least part of the check valve.

대표청구항 ▼

[ What is claimed is:] [1.] A manually operated liquid dispenser comprising:a dispenser body;a manually operated pump mechanism on the dispenser body;a liquid supply passage on the dispenser body for directing liquid flow to the pump mechanism on manual operation of the pump mechanism;a liquid disch

[ What is claimed is:] [1.] A manually operated liquid dispenser comprising:a dispenser body;a manually operated pump mechanism on the dispenser body;a liquid supply passage on the dispenser body for directing liquid flow to the pump mechanism on manual operation of the pump mechanism;a liquid discharge passage on the dispenser body for directing liquid flow from the pump mechanism and out of the dispenser body on manual operation of the pump mechanism;a valve assembly in one of the liquid supply passage and the liquid discharge passage for controlling liquid flow, the valve assembly comprising a valve seat protrusion and a tubular valve member, the tubular valve member engaging around the valve seat protrusion to block liquid flow through the tubular valve member and the tubular valve member moving away from the tubular valve seat protrusion to unblock liquid flow through the tubular valve member, andthe tubular valve member has longitudinally opposite first and second ends and a lateral wall thickness that is smaller at the first end of the tubular valve member than a lateral wall thickness at the second end of the tubular valve member.