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Hand pump

a hand pump and hand-held technology, applied in the field of hand pumps, can solve the problem of not intended summary, and achieve the effect of convenient us

Inactive Publication Date: 2013-11-07
RL INNOVATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a hand pump that can be used to pump liquid from a container. It includes a lower housing with a valve assembly and a centrally positioned ring-shaped boss for engagement with the valve assembly. The pump also has an upper housing with a piston and a hollow piston rod with a valve seat. A spring maintains the lower housing in an extended position. The hand pump can be selectively secured to the container and is convenient to use. Its technical effects include improved pumping efficiency, ease of use, and compatibility with various liquid chemicals.

Problems solved by technology

Moreover, this Summary is not intended for use as an aid in determining the scope of the claimed subject matter.

Method used

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Embodiment Construction

[0026]Embodiments are described more fully below with reference to the accompanying figures, which form a part hereof and show, by way of illustration, specific exemplary embodiments. These embodiments are disclosed in sufficient detail to enable those skilled in the art to practice the invention. However, embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. The following detailed description is, therefore, not to be taken in a limiting sense in that the scope of the present invention is defined only by the appended claims.

[0027]The hand-held pump dispenser of this invention is referred to by the reference numeral 10. Dispenser 10 includes a lower, cup-shaped housing 12 having a horizontally disposed bottom wall 14 with an upper side 16 and a lower side 18. Housing 12 also includes an upstanding wall portion 20 which extends upwardly from bottom wall 14. The housing 12 has an open upper end 22. A cen...

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Abstract

A hand pump which is threadably mounted on the throat of a liquid container with the throat having a throat plug assembly mounted therein. The pump includes a lower housing having an upper housing movably embracing the lower housing. The upper housing is selectively movable between a normal extended position to a compressed position relative to the lower housing. When the upper housing is moved from its extended position to its compressed position, a piston and piston rod assembly pumps liquid from the lower housing outwardly from the upper housing.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to a hand pump and more particularly to a hand pump which is threadably mounted on the throat of a liquid container with the throat having a throat plug assembly mounted therein.[0003]2. Description of the Related Art[0004]Applicant has previously received several patents relating to chemical dispensers and dosing devices which include a throat plug assembly press-fitted into the throat of a container having liquid chemicals therein. For example, see U.S. Pat. Nos. 5,988,456 and 7,631,783. The throat plug assemblies of the '456 and '783 patents include a vertically disposed valve stem having an opening formed therein below the upper end thereof. A valve, having upper and lower ends, slidably embraces the valve stem so that the opening in the valve stem is normally closed. The throat plug assembly is maintained in the normally closed position until some structure, such as a discharge cap, is thread...

Claims

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Application Information

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IPC IPC(8): B65D88/54
CPCB05B11/1001
Inventor LAIBLE, RODNEY
Owner RL INNOVATIONS