Packing Nut Lock and Method of Use
AssigneeS.P.M. Flow Control, Inc.
InventorsMark Christopher Dille, Wesley David Freed
Life of this patent
Estimating the term…
Abstract
An apparatus for preventing a threaded nut from unscrewing from a threaded bore of a device. The threaded nut has a circular periphery containing a plurality of apertures. The apparatus has a body with a first pin configured to insert into one of the apertures of the threaded nut, and a retainer that releasably holds the first pin within the aperture.
Claims20
An apparatus for preventing a threaded nut from unscrewing from a threaded bore of a device, the nut having a circular periphery containing a plurality of apertures, the apparatus comprising:
- a body having a first pin configured to insert into one of the apertures of the nut;
- and
- a retainer that releasably holds the first pin within the aperture.
An apparatus for preventing a threaded nut from unscrewing from a threaded bore of a device, the nut having a circular periphery containing a plurality of apertures, the apparatus comprising:
- a body having a first pin configured to insert into one of the apertures of the nut and a second pin extending from the body at an angle relative to the first pin for engaging another aperture in the nut, one of the pins being retractable relative to the body;
- the second pin having an axis that intersects the axis of the first pin, and the axis of the first pin and the axis of the second pin being located in a single plane;
- and
- a shank extending outward from and rigidly attached to the body and adapted to engage a non-rotatable portion of the device, the shank having an axis that intersects the axes of the first pin and the second pin, and the shank axis and the axes of the first and second pin being located in a single plane.
A reciprocating pump assembly, the assembly comprising:
- a reciprocating pump having a housing;
- a threaded nut in engagement with a threaded bore in the reciprocating pump housing;
- an apparatus for retaining the threaded nut in engagement with the threaded bore in the reciprocating pump housing, the apparatus having a body with a portion in releasable engagement with the nut and a retainer that releasably retains the body in engagement with the nut;
- and
- a shank extending from the body and adapted to engage a non-rotatable portion of the reciprocating pump to prevent rotation of the body relative to the pump housing, which in turn, prevents the threaded nut from rotating relative to the pump housing.
A method of preventing a threaded nut from unscrewing from a threaded bore of a device, the nut having a circular periphery containing a plurality of apertures, the method comprising:
- providing a body with a pin;
- inserting the pin into one of the apertures;
- retaining the body and the pin with the nut;
- and
- transferring any forces due to a tendency of the nut to unscrew to a fixed portion of the device.
Dependencies are inferred from the claim text.