Abstract: In one embodiment, the medical pendant includes a hollow center, elongated plastic housing with two opposing open ends. The housing is made of a material that is translucent and diffuse light into the housing's interior. A magnifying glass is sealingly mounted in the interior of the housing at one end thereof. A film retainer is removably mounted at the other end of the housing opposite the magnifying lens. The film retainer is made of a material that is also translucent to light and diffuses light into the interior of the housing. The medical or physical information is carried on a diazo film having a solid color background with light transmissive characters depicting the information. The film is mounted on an inboard surface of the film retainer. More particularly, the diazo film has a solid blue background with transparent characters.

Abstract: There is disclosed a subsea wellhead connector comprised of a lower tubular member mounted on the upper end of a lower wellhead member, and an upper tubular member suspended from an upper wellhead member for lowering into end-to-end connection with the lower tubular member. Locking teeth are formed about the ends of the tubular members, and circumferentially spaced locking segments are carried by the upper tubular member for movement radially into or out of locking engagement with the grooves about the upper and lower tubular members. The locking segments are moved inwardly to locking position by means of a cam ring which surrounds them, and are withdrawn from locking position by spreader dogs carried by the cam ring and extending between the ends of adjacent locking segments.

Abstract: An improved quick connector substantially simplifies string make-up by eliminating the need for a perfect longitudinal alignment between adjacent sections before engagement. An elongated recess in either the pin or box connector permits the pin to be inserted into the box at an angle. Interaction between the recess face and a surface on the opposite connector causes the pin to automatically align with the box. When the pin reaches its fully engaged position in the box, a spring tension snap lock ring having multiple annular teeth meshes with complementary grooves to lock the pin and box together.

Abstract: There are disclosed several forms of subsea wellhead equipment of the type in which casing hangers connected to the upper ends of successively smaller diameter casing strings are adapted to be lowered into and landed within the bore of a casing head, which is connected to an outermost string at the subsea level, to suspend the strings within the outermost casing of the well bore, and wherein openings in each hanger which connect the annulus between each casing string and the next outer string with the space between the hanger and the bore of the head, to permit cement returns to circulate therethrough as the string is cemented within the well bore, are adapted to be closed off, when the casing has been cemented, by means of a seal assembly lowered into and locked down within the space.

Abstract: A mixing blade assembly including a hub, a set of impeller blades having air foil configurations and flat end portions for attachment to corresponding flat surfaces of mounting members which attach the blades to the hub. The flat attachment surfaces avoid stresses tending to distort the blades. The hub is a hollow member made from a set of plates. The leading edges of the blades are generally straight, and the trailing edges are inclined rearwardly from the tips towards the roots of the blades.

Abstract: A connector assembly includes a pin connector for receipt by a box connector. An external surface of the pin features a helical groove; a generally complementary internal surface of the box features a helical groove of the same rotational sense and pitch. A helical latch coil is carried in one of the grooves, extending partly out of the groove. The connectors are latched together by stabbing the pin into the box, whereby the latch coil is ratcheted into place, partly extending into the groove of the connector not carrying the coil. Subsequent mutual rotation between the connectors in one rotational sense tightens the latched connection; rotation in the opposite sense releases the latching.

Abstract: A connector assembly includes a pin connector for receipt by a box connector. The pin connector features a neck portion having external threads; the box connector features a collar portion having internal threads, generally complementary for meshing with the external threads. The connectors may be threadedly joined together by longitudinally inserting the pin connector into the box connector, whereupon the two connectors are mutually sealed at two locations on opposite sides of the internal and external threads to define, with the threads, an annular region. Application of fluid pressure to the annular region may radially expand the region to permit further insertion of the pin connector into the box connector to mutually align the internal and external threads. Release of the fluid pressure permits mutual meshing between the threads to threadedly connect the pin and box connectors.

Abstract: Proper alignment of threads when joints of casing are made up in hostile environments, such as on off-shore floating platforms subject to being buffeted by wave action, is provided by means of an improved box and pin connector. The pin has a substantially tapered threaded section whose small diameter end terminates in a lower guide section and whose large diameter is adjacent a larger diameter upper guide section. The box has a complementary section of internal oppositely tapered threads to mate with those on the pin as well as a smaller lower receptacle to receive the lower guide section on the pin and a larger receptacle to receive the upper guide section on the pin. In another version, both sets of threads are straight. The upper and lower guide sections on the pin and complementary receptacles in the box are mutually, partially engaged prior to engagement of the threads to guide the threads into proper alignment.

Abstract: Connector apparatus includes a guide surface, or edge, spaced from interval threads on one member for receiving external threads on a second member, whereby the two members may be threadedly engaged with the guide surface constraining relative orientation between the two members prior to threaded engagement to avoid cross-threading.

Abstract: A weld-on female casing connector is disclosed having an upper threaded section and a lower cylindrical section that is welded to the casing. Located between the two sections is a connecting section that has a downwardly decreasing cross-sectional area until the cross-sectional area approaches the cross-sectional area of an ideal transition section and has a stress in the range of other high stress sections of the connector than an increasing cross-sectional area until the outside diameter of the connecting section is sufficient to provide a downwardly facing elevator shoulder of sufficient area to support the casing on an elevator.

Abstract: There is disclosed a remotely operable, subsea wellhead connector for connecting the lower end of one wellhead member to the upper end of another wellhead member which is mounted in an upright position beneath the water surface, such connector including a tubular member adapted to be connected to the lower end of the one wellhead member so that it may be lowered therewith into end-to-end relation with the lower wellhead member, and a split lock ring having upper and lower locking teeth carried by the tubular member for radial movement together between an expanded position in which the upper teeth are generally opposite and spaced from grooves about the tubular member and the lower teeth are movable past the upper end of the lower wellhead member for disposal opposite and spaced from grooves thereabout, and a contracted position in which the upper and lower teeth thereof are in locking engagement with the grooves in the tubular member and lower wellhead member, respectively, when the tubular member has been lo

Abstract: There is disclosed apparatus for releasably connecting first and second tubular members in end-to-end relation including a split lock ring having first and second axially spaced locking teeth which are carried by the first member for radial movement together being expanded positions opposite from first and second locking grooves about the first and second members, respectively, and contracted positions in locking engagement with such grooves, and a cam ring which surrounds the lock ring for movement between a first position in which the lock ring is expanded and a second position in which the cam ring is slidable over follower means on the lock ring to wedge said lock ring into expanded position.

Abstract: There are disclosed two embodiments of wellhead apparatus for use in suspending concentric strings of casing of an offshore well at the ocean floor. For this purpose, an inner hanger to which the inner casing is connected is adapted to be landed within an outer hanger to which the outer casing is connected, each at the ocean floor or "mudline". Seating surfaces are formed on the bore of the tubular body of the outer hanger body, and landing surfaces are formed on a circumferentially split landing ring arranged about the tubular body of the inner hanger and having landing surfaces formed thereabout for expansion and contraction within a recess about the tubular hanger body between a contracted position as it is moved vertically within the outer casing and bore of the tubular body of the outer hanger, and an expanded position in which the landing surfaces thereon are landed upon the seating surfaces when disposed opposite thereto.

Abstract: Proper alignment of threads when joints of casing are made up in hostile environments, such as on off-shore floating platforms subject to being buffeted by wave action, is provided by means of an improved box and pin connector. The pin has a substantially tapered threaded section whose small diameter end terminates in a lower guide section and whose large diameter is adjacent a larger diameter upper guide section. The box has a complementary section of internal oppositely tapered threads to mate with those on the pin as well as a smaller lower receptacle to receive the lower guide section on the pin and a larger receptacle to receive the upper guide section on the pin. The upper and lower guide sections on the pin and complementary receptacles in the box guide the threads into proper alignment. The threads are sufficiently tapered so that the guide sections and complementary receptacles are mutually, partially engaged prior to engagement of the threads.

Abstract: There is disclosed apparatus for use in suspending concentric strings of casing of an offshore well at the ocean floor, wherein at least one hanger for suspending an intermediate casing string is provided with a plurality of vertically spaced, upwardly facing seating surfaces which extend radially inwardly from its bore, and the outer side of such hanger body has a recess thereabout in which a radially expandable ring having a plurality of vertically spaced, downwardly facing landing surfaces is received. As the intermediate hanger body is lowered into the bore of an outer hanger having vertically spaced, upwardly facing seating surfaces extending radially outwardly from its bore, the ring expands radially outwardly to move its landing surfaces into supported positions on the seating surfaces of the outer hanger.

Abstract: Proper alignment of threads when joints of casing are made up in hostile environments, such as on off-shore floating platforms subject to being buffeted by wave action, is provided the means of an improved box and pin connector. The pin has a substantially tapered threaded section whose small diameter end terminates in a cylindrical lower guide section and whose large diameter is adjacent a larger diameter cylindrical upper guide section. A stop above the upper guide section is provided by an upset. The box has a complementary section of internal oppositely tapered threads to mate with those on the pin as well as a smaller lower cylindrical receptacle to receive the lower guide section on the pin and a larger cylindrical receptacle to receive the upper guide section on the pin. The upper and lower guide sections on the pin and complementary receptacles in the box guide the threads into proper alignment.

Abstract: Connector apparatus includes a guide surface spaced from internal threads on one member for receiving external threads on a second member, whereby the two members may be threadedly engaged with the guide surface constraining relative orientation between the two members prior to threaded engagement to avoid cross-threading.

Abstract: A spindle assembly of a type adapted to receive a readily removable disc for rotation senses the thickness of the disc with respect to a predetermined thickness and in response to so sensing the thickness of the disc an indication is provided as to whether the thickness of the disc varies from the predetermined thickness. The disc is clamped by movement of a clamping body while a portion of the spindle assembly serves to insure that the clamping body moves into and out of engagement with the disc surface in a direction substantially normal to the disc under control of the spindle assembly. In addition, the force with which the clamping body acts is modulated selectively as desired to accommodate the need for greater forces when mounting larger discs.