Patent ID: 6746221
Filing Date: 2004-06-08
Classification: F04B

Abstract:
A traveling valve for use in a sucker rod pump comprising:a cylindrical housing having an interior passageway extending from an upper end to a bottom end thereof, said interior passageway having a tapered shoulder formed therein; a piston received within said interior passageway of said housing and slidable therein, said piston having a mechanically operated sliding shear seal positioned interior of said housing, said seal being operable between an open position and a closed position by reciprocal action of the sucker rod, said piston having a surface thereon generally conforming to a shape of said tapered shoulder in said interior passageway; and a base threadedly connected to a lower end of said housing, said base including a first semi-cylindrical portion positioned within said housing and containing a portion of said sliding shear seal, said piston positioned within said housing above said base with a shaft extending through said upper end of said housing, said piston including a second semi-cylindrical portion which matingly engages said first semi-cylindrical portion of said base and contains a second portion of said sliding shear seal.