Liquid pump
First Claim
Patent Images
1. In a liquid pump assembly, a pump housing having a pump chamber with an opening, a drive shaft in the pump chamber mounting a pump rotor, a pump cover sealing the opening of the pump chamber and a single, one piece molded member partially defining the shape of the pump chamber and secured to the inside surface of the pump cover whereby said cover and molded member form in the unassembled state of the cover an integral unit.
2 Assignments
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Accused Products
Abstract
Liquid pump assembly comprising a pump housing having a pump chamber, a drive shaft in the pump chamber mounting a pump rotor, a pump chamber cover and a molded member (12,18) partially defining the shape of the pump chamber (8) located on the inside surface of the pump cover (1).
10 Citations
15 Claims
- 1. In a liquid pump assembly, a pump housing having a pump chamber with an opening, a drive shaft in the pump chamber mounting a pump rotor, a pump cover sealing the opening of the pump chamber and a single, one piece molded member partially defining the shape of the pump chamber and secured to the inside surface of the pump cover whereby said cover and molded member form in the unassembled state of the cover an integral unit.
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13. In a liquid pump assembly, a pump housing having a pump chamber with an opening, a drive shaft in the pump chamber mounting a pump rotor, a pump cover sealing the opening of the pump chamber and a single, one piece molded member partially defining the shape of the pump chamber and secured to the inside surface of the pump cover whereby said cover and molded member form in the unassembled state of the cover an integral unit, said molded member including a conical surface conforming to the back face of the pump rotor.
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14. In a liquid pump assembly, a pump housing having a pump chamber with an opening, a drive shaft in the pump chamber mounting a pump rotor, a pump cover sealing the opening of the pump chamber and a single, one piece molded member partially defining the shape of the pump chamber and secured to the inside surface of the pump cover whereby said cover and molded member form in the unassembled state of the cover and integral unit, said molded member including a wedged shaped element.
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15. In a liquid pump assembly, a pump housing having a pump chamber with an opening, a drive shaft in the pump chamber mounting a pump rotor, a pump cover sealing the opening of the pump chamber and a single, one piece molded member partially defining the shape of the pump chamber and secured to the inside surface of the pump cover whereby said cover and molded member form in the unassembled state of the cover and integral unit, said molded member including peripheral projections defining a radial seal between said pump cover and pump housing and an axial seal between the drive shaft and pump housing.
Specification