Aisin Seiki Kabushiki Kaisha

Mitsutoshi Hagiwara

Yasuo Ozawa

Itsuro Hashiguchi

Norio Sasaki

Ryuji Nakamura

A water pump is provided with pressure-feed means whereby coolant that has leaked into the space between a bearing and a seal member in a pump housing is forcibly fed into an radiator reservoir tank in order to be recovered.

Water pump

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.

A liquid pump in which a perfect seal is achieved between a liquid and the atmosphere without the use of magnets includes a pump shaft rotatably supported inside housings and having an impeller secured thereto for impelling a liquid through the pump, a driven unit provided inside the housing for rotating the pump shaft, a driving unit coupled to external power, and a resilient member provided between the driven unit and the driving unit for effecting sealing liquid-tightly between the driven unit and the driving unit on the side of the impeller and transmitting force from the driving unit to the driven unit.

Liquid pump having a driving unit and a driven unit with a resilient

A viscous fluid coupling device comprises a housing; a partition board dividing an internal space in the housing into a storage chamber and an operation chamber, the partition board having first communicating holes to communicate the storage chamber with the operation chamber; a rotor which is provided in the operation chamber and is secured to one end portion of a drive shaft so as to rotate together with the drive shaft; a valve provided in the storage chamber to open and close the first communicating holes; and a rod having one end secured to the valve and the other end secured to the inner peripheral portion of a spiral bimetal. The rod is rotatably supported by the housing and the housing and the rotor have labyrinth grooves in the surfaces which are confronted with each other. The viscous fluid coupling device further comprises a second communicating hole which is located radially inwardly of the labyrinth grooves to discharge the viscous fluid from the operation chamber into an internal space of the operation chamber when the viscous fluid is raised high in temperature; and a temperature responding member connected to a seal member to open and close the second communicating hole.

Viscous fluid coupling device

A fluid coupling includes an input shaft, a housing having a space therein and supported by the input shaft via a bearing, a dividing plate dividing the space into a storing chamber and an acting chamber through holes made in the dividing plate, a valve opening and closing the through holes, a rotor fixed to the input shaft and located in the acting chamber, pumping holes made in the dividing plate, pumping projections on the dividing plate at the downstream side of the pumping holes, and a seal located between the pumping holes and the pumping projections.

Fluid coupling having a pump seal

A viscous fluid coupling has a rotor including peripheral teeth with distal ends closely facing an inside surface of an output member. The distal ends of the teeth form flat surfaces parallel with the output member to form a rotary seal therewith, which reduces variations in the rotational speed of the output member.

Growing community of inventors

Anjyo, Japan

Mitsutoshi Hagiwara