Other

Eddie N Stanton

Michael Strickland

A package cartridge is provided for use in the maintenance of a packing bore for a plunger-type pump. According to one aspect, a packing cartridge includes: a generally-cylindrical sleeve adapted to be at least partially positioned in the packing bore, a first abutment ring positioned in the sleeve, and a second abutment ring positioned in the sleeve and co-axially spaced apart from the first abutment ring. Telescoping structures are operatively positioned between the first abutment ring and the second abutment ring. According to another aspect, a structure forming a circumferential pressure-ring groove is provided. A pressure ring is positioned in the pressure-ring groove, the pressure ring having at least one smaller external dimension than an internal dimension of the pressure-ring groove, whereby at least one clearance is provided between the pressure-ring groove and the pressure ring. These aspects can be advantageously practiced together.

Packing cartridges and pressure-dampening elements for plunger-type pumps

An apparatus is provided for pumping a fluid, wherein the fluid comprises a volatile organic compound ('VOC'), the apparatus including: an enclosure for the exposed portion of the reciprocating piston or plunger; and a VOC-absorbing material operatively positioned to reduce VOC emissions from the enclosure to the atmosphere. According to another aspect, a method is provided for pumping a fluid comprising a VOC is provided. According to yet another aspect, a method is provided for reducing emissions of a VOC from a positive-displacement pump used for pumping a fluid, wherein the fluid comprises the VOC, and wherein the method includes the steps of: (i) enclosing at least the exposed portion of the reciprocating piston or plunger to form an enclosure; and (ii) operatively positioning a VOC-absorbing material to reduce VOC emissions from the enclosure to the atmosphere. Preferably, the VOC-absorbing material comprises peat moss.

Apparatuses and methods for reducing emissons of volatile organic compounds when pumping fluids containing volatile organic compounds with a positive displacement pump

A releasible tool is provided for removing a cylindrical member such as a valve seat, a pump liner, or a bushing from machines, pumps, oil well tubing, or other devices in which it is used. The releasable tool includes a mandrel, a platform slidably mounted to the mandrel, at least two jaws pivotally mounted to the platform, and an adaptor connected to the mandrel. The mandrel has a generally bell-shaped lower end and a shank portion. The platform is slidably mounted on the shank portion of the mandrel by placing the shank portion through a central bore of the platform. The jaw members are pivotally mounted to the platform, whereby they can be pivotally deflected outward to an expanded position by the bell-shaped lower end of the mandrel when the platform slides down the shank portion. The adaptor is releasably connected to the upper end of the shank portion of the mandrel. The adaptor and platform have corresponding tapered surfaces that can be engaged to form a releasable interference fit to grab and slide the platform upward relative to the shank portion of the mandrel, which moves the jaw members away from the bell-shaped lower end of the mandrel so that they can be pivotally deflected inward to a retracted position. Thus, the tool can be selectively inserted into or removed from a cylindrical member.

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Odessa, TX, United States of America

Eddie N Stanton