US 11,958,174 B2 · Valve seat puller head assembly

Abstract

A valve seat puller head assembly is comprised of seat puller head halves and springs. The seat puller head halves come together forming an opening. A pair of spring clips hold and secure the seat puller head halves together providing the outward force required to pre-position the tool (i.e., seat valve puller head assembly) in proper area for valve seat removal. In one embodiment, the valve seat puller head assembly further comprises an allthread having a tapered buttress engaged with the valve seat puller head via the opening of the valve seat puller head, eliminating thread clearance there between and greatly reducing the shear pressure at a root initiation area. In an alternative embodiment, a subzero temperature glycol solution within a portion of the valve seat puller head is circulated to “cold pull” heat from the valve seat puller head assembly and the valve seat which is in contact therewith.

Claims10

Dependent claims

A valve seat puller head assembly comprising:

a housing comprised of two halves, each of said two halves having threading;
a plurality of springs removably attached to said two halves of said housing, said plurality of springs joining said two halves of said housing together in a cylindrical configuration, the joined said two halves of said housing defining an opening, said threading of said two halves forming a uniformed threaded interior surface of said two halves;
and
a threaded rod having a first end and a second end, said second end being tapered, wherein said tapered threaded end of said threaded rod is mateable with said uniformed threaded interior surface of said two halves of said housing.

1 more element

Dependencies are inferred from the claim text.

Valve seat puller head assembly

Life of this patent

Valve seat puller head assembly

Life of this patent

Abstract

Claims10