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US 8,911,222 B2Granted
Input shaft assembly for gear pump
AssigneeHamilton Sundstrand Corporation
InventorsTimothy P. Walgren, Satish Shantilal Shah, Steven A. Heitz
Life of this patent
Estimating the term…
Abstract
A shaft assembly includes a shaft with a first radial shoulder and a second radial shoulder. A retainer plate is located at least partially between the first radial shoulder and the second radial shoulder to avoid damage when an impact load is applied to the shaft. A spring assembly biases the shaft out of contact with the retainer plate during operation.
Claims20
A shaft assembly comprising:
- a rotatable shaft defining a first radial shoulder and a second radial shoulder;
- and
- a retainer plate at least partially between said first radial shoulder and said second radial shoulder, said rotatable shaft being axially moveable over a range defined by said first radial shoulder and said second radial shoulder, respectively, bottoming on said retainer plate.
A shaft assembly comprising:
- a shaft with a first radial shoulder and a second radial shoulder;
- a spring guide in contact with said shaft;
- a first spring between said spring guide and said shaft;
- and
- a second spring in contact with said spring guide.
2 more elements
A gear pump comprising:
- a gear pump housing;
- an input shaft which at least partially extends from said gear pump housing along an input shaft axis, said input shaft defines a first radial shoulder and a second radial shoulder;
- and
- a retainer plate mounted to said gear pump housing, said retainer plate located at least partially between said first radial shoulder and said second radial shoulder to restrain an axial position of said input shaft.
1 more element
A method of installing an input shaft within a housing comprising:
- positioning the input shaft to at least partially extend from the housing along an input shaft axis, the input shaft defines a first radial shoulder and a second radial shoulder;
- and
- attaching a retainer plate to the housing, the retainer plate located at least partially between the first radial shoulder and the second radial shoulder to restrain an axial position of the input shaft.
Dependencies are inferred from the claim text.