Abstract:
A handle for imparting rotational motion to a rotationally-operable device including a valve stem and shear pin assembly, the handle comprising an elongated arm having a hub section for receiving a modular hub, a hand grip attached to one end of the arm, and yoke means attached to the distal end of the arm, the modular hub having protrusions for linking the modular hub to the hub section to provide for the transfer of torque between the handle and the modular hub and internal voids for engageably receiving the valve stem and shear pin assembly.
Abstract:
A non-extrusion device for split annular well casing and tubing hanger compression seals has a flat annular body having truncated, radially-split cone portions forming through holes for receiving pins or bolts and for guiding a compressed elastomer seal between inner and outer tubing structures along a radial direction to prevent axial extrusion of the seal.
Abstract:
A rotary air compressor of oil sealed type includes a stator containing a rotor, oil injectors arranged to inject oil into the interior of the stator, an oil sump connected by a first oil pathway to the oil injectors and an oil cooler situated in the first oil pathway. A thermally responsive valve situated in the first oil pathway is arranged to open only when the temperature of the oil has reached a predetermined value whereby no oil is injected through the oil injectors before the temperature of the oil has reached the said predetermined value.
Abstract:
A stem-operated fire-resistant gate valve including an improved metal-to-metal stem backseat fusible ring assemblies for facilitating automatic stem backseating at pre-selected temperatures, spring enhancement of the backseating procedure, and an improved metal-to-metal gate seat.
Abstract:
A packing is provided with a multilayered construction and a cup-like shape. The packing is configured to be carried in a packing holder for reciprocating motion within a pump cylinder. Some of the layers in the packing terminate on the convex face of the cup shape at radially spaced locations therearound. Thus, a peripheral portion of a number of the layers behind the cup lip are exposed to be engaged by the cylinder wall at a continuous contact area therearound. The hardness of the layer located outermost on the convex face is the greatest, and the hardness of each succeeding adjacent layer is lesser than the one immediately preceeding when progressing toward the cup lip along the convex face. Extrusion of the packing between the packing holder and the cylinder wall and subsequent severe localized wear is resisted by the greater hardness layers. A more uniform distribution of pressure across the area of contact between the packing and the cylinder wall is provided by the reduced tendency of the packing to extrude and the decreasing hardness sequence of adjacent layers.
Abstract:
A foldable two-piece boom is provided with an outer boom wing pivoted about an upright axis and being slidable relative to an inner boom arm which is pivoted to a frame member for both horizontal and vertical motion. A spring and cables in a mounting mechanism are arranged to permit the outer wing to pivot either forwardly or rearwardly when contacted by an abutment and thereafter gently returned to a neutral position parallel to the longitudinal axis of the inner boom arm at a controlled rate which minimizes impact forces. The spring and cables are also arranged to permit pivotal movement of the boom in a vertical plane while maintaining the inner and outer sections in vertical planar alignment. In response to the horizontal swinging of the boom through 90.degree. from its extended to its folded transport position, the spring and cables cause the outer wing to fold in the opposite direction of the arm to firmly clamp against the inner arm.
Abstract:
Generally, the present disclosure is directed to systems that may be used to facilitate the retrieval and/or replacement of production and/or processing equipment that may be used for subsea oil and gas operations. In one illustrative embodiment, a method is disclosed that includes, among other things, removing at least a portion of trapped production fluid (101a, 101b) from subsea equipment (100) while the subsea equipment (100) is connected to a subsea equipment installation (185) in a subsea environment (180), and storing at least the removed portion of the trapped production fluid (101a, 101b) in a subsea containment structure (120, 120a, 120b, 132) that is positioned in the subsea environment (180). Additionally, the disclosed method also includes disconnecting the subsea equipment (100) from the subsea equipment installation (185) and retrieving the subsea equipment (100) from the subsea environment (180).
Abstract:
A solder paste transfer process is provided and includes defining multiple arrangements of solder pad locations on a surface, applying solder paste onto multiple transfer tools coupled to a fixture in a pre-defined configuration reflective of the multiple arrangements, disposing the fixture such that the multiple transfer tools are disposed in an inverted orientation proximate to the surface and reflowing the solder paste to flow from the multiple transfer tools to the solder pad locations.
Abstract:
A quintuplex mud pump has a crankshaft supported in the pump by external main bearings. The crankshaft has five eccentric sheaves, two internal main bearing sheaves, and two bull gears. Each of the main bearing sheaves supports the crankshaft by a main bearing. One main bearing sheave is disposed between second and third eccentric sheaves, while the other main bearing sheave is disposed between third and fourth eccentric sheaves. One bull gear is disposed between the first and second eccentric sheaves, while the second bull gear is disposed between fourth and fifth eccentric sheaves. A pinion shaft has pinion gears interfacing with the crankshaft's bull gears. Connecting rods on the eccentric sheaves use roller bearings and transfer rotational movement of the crankshaft to pistons of the pump's fluid assembly.