Abstract: A sealing ring retention device for use in rotary mechanical fluid seals subjected to high fluid pressure and/or high temperature environments which utilizes unitary locking and anti-rotational structural features.

Abstract: In a pull-to-set anchoring device for cementatious material in which a nut is disposed upon one end of a stem and a head is formed on the other and a band is disposed on the stem intermediate the head and the nut, the band being arranged to slide into engagement with the cementatious material when the nut is twisted, the improvement including forming a groove on the outer surface of the head and disposing a resilient ring in the groove whereby the band is engaged and expanded to improve the holding characteristics of the device.

Abstract: Keyless lockable security devices in the form of a padlock or clevis pin for use in securing bulk containers in which the devices consist of a body member having at least one blind bore therein and a male member having limbs corresponding to the number of blind bores, insertable in the bore or bores.Each of the bores and the limbs have an annular recessed portion of substantially crochet hook form and an annular member of spring steel split cross-sectionally in the form of a C-ring is located in the recessed portion of the body member.The male limb is driven into the bore until its recessed portion is engaged by the annular member to prevent withdrawal of the limb from the bore.

Abstract: A reusable guide device for use in guiding elongate filament such as wire from a coil contained within a package or carton, the guide device including a tubular guide member adapted to be inserted radially into the coil and having means for securing an outer end of the guide member within an opening in the carton so that the elongate filament may be paid out from the coil through the guide member. Restraint means in the form of a plurality of finger barriers are provided within the guide member and cooperate with the elongate filament to prevent its retraction or withdrawal back into the package.

Abstract: An extensible table (10) has one or more pivotal leaves (11) movable between an upper use position and a lower storage position. Each leaf is pivotally supported by a pair of hinges each of which includes a journal (34) which is connected to the pivotal leaf and is received within a journal block (30) formed in the frame of the table. One hinge of each pair is a positioning hinge and the journal thereof has first and second recesses corresponding to the use position and the storage position, respectively. A locking pin (42) disposed in an aperture extending transversely through the journal block of each positioning hinge and engages one of the recesses in the journal when the pivotal leaf is in one position and engages the other of the recesses when the leaf is in the other of its positions. The locking pin also has a recess formed in its shaft which can be oriented to initially register with one of the recesses on the journal to thereupon permit pivotal movement of the end leaf.

Abstract: A retainer clip for tool bits comprises an annular strip having circumferentially spaced ends defining a gap therebetween. A pair of proximate projections and at least one remote projection project outwardly from the strip. The proximate projections are located on opposite sides of the gap. The proximate projections include positively oriented front surfaces, and the remote projection includes a non-positively oriented front surface disposed longitudinally rearwardly relative to forwardmost portions of the front surfaces of the proximate projections. Upon forward displacement of the clip within the hole of a holder, contact occurs between the proximate projections and a wall of a retaining groove of the holder to produce radial shifting of the gap of the clip toward the axis of the bit. Removal of the bit from the hole is possible only by shearing the remote projection.