US 2014/0271290 A1 · QUICK LOCK AND RELEASE DEVICE PREVENTING UNWANTED LOOSENING OF A PACKING NUT OF A PLUNGER PUMP DURING OPERATION OF THE PUMP

Abstract

A pump has a packing nut extending into an open end of the plunger bore and a device coupled to the packing nut. The device includes first body coupled to a second body to form a body of the device. A first post connected to the body and a second post connected to the body. The first post extending into a first opening of the packing nut and the second post extends into a second opening of the packing nut to couple said device to said packing nut. A stop forms a portion of the device. When the body is in a locked orientation, the stop of the device abuts or will abut, when the nut is rotated in a loosening direction, a connecting assembly of the pump. When the body is in the unlocked orientation, the second post is moveable, relative to the first body and the first post, in a direction out of the second opening, and a first portion of said second body, exclusive of said second post, is moveable in a direction relative to said first body and first post.

Claims28

Dependent claims

A plunger pump having a plunger bore, a packing nut extending into an open end of the plunger bore in combination with a device coupled to the packing nut, the combination comprising:

a power end of said pump;
a fluid end of said pump;
a plurality of connecting assemblies of said pump coupling said power end to said fluid end of said pump;
a first body coupled to a second body, said first and second body forming a body of said device;
a first post connected to said body and a second post connected to said body, said first post extending into a first opening and said second post extending into a second opening to couple said device to said packing nut;
a stop forming a portion of said device, wherein when said body is in a locked orientation, said stop abuts or will abut, when said nut is rotated in a loosening direction, one of said connection assemblies;
wherein said body is adjustable between an unlocked orientation and said locked orientation;
wherein in said unlocked orientation, said second post is moveable, relative to said first body and said first post, in a direction out of said second opening, and a first portion of said second body, exclusive of said second post, is moveable in a direction relative to said first body and first post.

5 more elements

A device adapted to retain a packing nut of a plunger pump from an unwanted loosening during operation of the plunger pump, said device comprising:

a first body pivotally coupled to a second body, said first and second body forming a body;
a first section of said first body and a second section of said first body, said second section having a curved surface;
a first section of said second body and a second section of said second body, said second section having a curved surface;
a first post coupled to said second section of said first body;
a second post coupled to said second section of said second body;
a stop connected to said first section of said second body;
wherein said body is adjustable between an unlocked orientation and a locked orientation;
wherein in said unlocked orientation, said second post is pivotal, relative to said first body and said first post;
and
wherein in said unlocked orientation, said first post is pivotal, relative to said second body and said second post.

7 more elements

A method of coupling a device to a surface of a packing nut, said packing nut extending into an open end of a plunger bore of a plunger pump, said coupling to prevent an unwanted loosening of the nut from the open end during operation of the pump, said method comprising:

slidably inserting a first post connected to a body of the device into a first hole to couple of the body to the nut, said body having a first body pivotally connected to a second body;
moving and pivoting a second post connected to the body, relative to the first body and first post, in a second curved direction and along a second curved path and while moving and pivoting the post in the second curved direction and along the second curved path, slidably inserting the second post into a second hole to couple the body to the nut;
restraining the second post's ability to move and pivot, relative to the first body and first post, in a first curved direction and along a first curved path opposite the second curved direction and path;

Dependencies are inferred from the claim text.

Quick lock and release device preventing unwanted loosening of a packing nut of a plunger pump during operation of the pump

Life of this patent

Quick lock and release device preventing unwanted loosening of a packing nut of a plunger pump during operation of the pump

Life of this patent

Abstract

Claims28