PUMP ASSEMBLY FOR AN EMERGENCY EYEWASH STATION
First Claim
Patent Images
1. A pump assembly for an emergency eyewash station, comprising:
- an impeller housing having a pumping chamber with an input port and an output port;
an impeller pump wheel rotatably mounted within said pumping chamber and configured and arranged to draw eyewash fluid through said input port and force it out said output port;
a first drive shaft connected to the impeller pump wheel;
an impeller drive interface driving said first drive shaft; and
means for driving said impeller drive interface.
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Accused Products
Abstract
A pump assembly for an emergency eyewash station and method of retrofitting a plumbed emergency eyewash station is disclosed. The pump is configured into two parts, an impeller assembly and a drive assembly, that are configured to couple together. The impeller assembly is isolated from the drive assembly and can be easily replaced to ensure a sterile fluid path is maintained for the eyewash fluid. The drive assembly can be fluid powered or an electric motor as desired. The present invention allows a plumbed eyewash station to be retrofitted to use a sterile eyewash fluid. The present invention can also be used in portable eyewash station units too.
88 Citations
13 Claims
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1. A pump assembly for an emergency eyewash station, comprising:
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an impeller housing having a pumping chamber with an input port and an output port;
an impeller pump wheel rotatably mounted within said pumping chamber and configured and arranged to draw eyewash fluid through said input port and force it out said output port;
a first drive shaft connected to the impeller pump wheel;
an impeller drive interface driving said first drive shaft; and
means for driving said impeller drive interface. - View Dependent Claims (2, 3, 4, 5)
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6. A pump assembly for an emergency eyewash station, comprising:
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an impeller housing having a pumping chamber with an input port and an output port;
an impeller pump wheel rotatably mounted within said pumping chamber and configured and arrange to draw eyewash fluid through said input port and force it out said output port;
a first drive shaft connected to the impeller pump wheel;
an impeller drive interface driving said first drive shaft;
a drive housing;
an electric motor mounted within said drive housing;
a second drive shaft being driven by said electric motor;
a drive coupler being driven by said second drive shaft, said drive coupler configured and arranged to drive said impeller drive interface. - View Dependent Claims (7, 8)
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9. An emergency eyewash station, comprising:
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a sterile eyewash fluid source;
a dispensing structure;
a pump assembly in fluid connection between said sterile eyewash fluid source and said dispensing structure and configured and arranged to draw sterile eyewash fluid from said sterile eyewash fluid source and pump it to said dispensing structure;
a drive assembly for powering said pump assembly;
said pump assembly operatively coupled to said drive assembly; and
means for activating said emergency eyewash station to commence dispensing of sterile eyewash fluid from said sterile eyewash fluid source and out said dispensing structure. - View Dependent Claims (10, 11, 12, 13)
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Specification