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US 3,942,112 AGranted
Rotary seal shaft rotation transducer
OwnerCarl M. Westbrookinventor
Life of this patent
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Abstract
The invention relates to a device for signalling the rotational displacement or speed of a shaft provided with a rotary seal through which a gas or liquid is induced into a bore within the shaft. More particularly, the invention relates to a novel device in which the operative elements of a rotary seal and a rotational transducer are combined as a compact unitary assembly that is simple, reliable and easily serviced.
Claims9
A rotary seal shaft rotation transducer device comprising
- a. a spindle member adapted to be affixed coaxially to an end of a rotatable shaft for rotation therewith, said spindle member including a first internal passageway in leak tight communication with a second internal passageway in said shaft when said spindle member is affixed thereto;
- b. a housing;
- c. bearing means carried by said spindle member and supporting said housing to allow said housing to remain stationary while said shaft and said spindle member rotate together;
- d. a seal member carried by said housing in nonrotatable relation thereto and including a third internal passageway, said seal member being adapted to cooperate with said spindle member to establish substantially leak tight communication between said first and third internal passageways;
- e. rotatable armature means supported by said spindle member for rotation therewith;
- and
- f. transducer means supported by said housing in non-rotatable relation thereto and adapted to cooperate with said armature means to provide an output signal functionally related to rotational movement of said spindle member.
4 more elements
Dependencies are inferred from the claim text.