Water pump
First Claim
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1. A water pump comprising:
- a housing defining a working chamber;
a rotary shaft freely rotatably supported in the housing via a bearing;
an impeller fixedly secured to one end of said rotary shaft and accommodated in said working chamber;
a seal member provided between said impeller and said bearing, within said housing and around said rotary shaft, said housing having further defined therein a space between said bearing and said seal member;
pressure-feed means for forcibly feeding coolant that has leaked into said space into a radiator reservoir tank; and
drive means for rotating said rotary shaft to circulate the coolant.
1 Assignment
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Accused Products
Abstract
A water pump is provided with pressure-feed means whereby coolant that has leaked into a space between a bearing and a seal member in a pump housing is recovered by being forcibly fed into an radiator reservoir tank.
55 Citations
6 Claims
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1. A water pump comprising:
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a housing defining a working chamber; a rotary shaft freely rotatably supported in the housing via a bearing; an impeller fixedly secured to one end of said rotary shaft and accommodated in said working chamber; a seal member provided between said impeller and said bearing, within said housing and around said rotary shaft, said housing having further defined therein a space between said bearing and said seal member; pressure-feed means for forcibly feeding coolant that has leaked into said space into a radiator reservoir tank; and drive means for rotating said rotary shaft to circulate the coolant. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification