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    FLOORBOARD WITH COMPRESSION NUB
    41.
    发明专利
    FLOORBOARD WITH COMPRESSION NUB 未知

    公开(公告)号：CA2343815A1

    公开(公告)日：2000-03-23

    申请号：CA2343815

    申请日：1999-09-10

    Applicant: ROBBINS INC

    Inventor： NIESE MICHAEL ,  ELLIOTT PAUL

    IPC: E04F15/04 ,  E04B5/02

    Abstract: A wood floor system comprises a plurality of parallel rows (10a, 10b...10z) of floorboards (10) laid end-to-end, and each of the floorboards (10) includes a compression nub (20) extending along a side surface (13) thereof, adjacent t he top surface (11). These compression nubs (20) affirmatively engage an opposi ng side surface (14) of an adjacent floorboard row (10a), thereby sealing, or isolating, the top surface of the floor from the side surfaces (13, 14) of t he floorboard rows (10a, 10b...10z). This uniformly distributes expansion and contraction forces throughout the floor, due to uniform spacing between the floorboard rows (10a, 10b...10z). The isolation of the floorboard upper surface from the side surfaces (13, 14) also prevents undesired downward migration or flow of liquid finishing solution (28), which can have serious adverse affects for a wood floor. The invention reduces the total volume of finishing solution necessary for finishing the floor.

    Inflatable gripper assembly for rock boring machine
    42.
    发明专利
    Inflatable gripper assembly for rock boring machine 未知

    公开(公告)号：AU703568B2

    公开(公告)日：1999-03-25

    申请号：AU6567696

    申请日：1996-09-17

    Applicant: ATLAS COPCO ROBBINS INC

    Inventor： ANDERSON LLEWELLAN

    IPC: E21B4/18 ,  E21D3/00 ,  E21C9/00 ,  E21B17/10

    Abstract: An inflatable gripper assembly for a rock boring or cutting machine is disclosed. The inflatable gripper assembly comprises a base member (42) and an elastomeric sheet (40) secured in a fluid-tight and reaction force secure manner to the base member. The elastomeric sheet expands when fluid is supplied between the base member and the elastomeric sheet to brace a rock boring or cutting machine in a tunnel. The elastomeric sheet contracts when fluid is removed from between the base member and the elastomeric sheet to allow the rock boring or cutting machine to move within the tunnel.

    Cutter assembly having a plurality of independently rotatable cutting units thereon
    43.
    发明专利
    Cutter assembly having a plurality of independently rotatable cutting units thereon 未知

    公开(公告)号：AU690422B2

    公开(公告)日：1998-04-23

    申请号：AU4697896

    申请日：1996-01-17

    Applicant: ATLAS COPCO ROBBINS INC

    Inventor： ANDERSON LLEWELLAN ,  HERN GREGORY L

    IPC: E21B10/10 ,  E21B10/12 ,  E21B10/22 ,  E21D9/10 ,  E21B10/08

    Abstract: A rock cutting tool with a plurality of independently rotatable cutter units and with a shaft, a sleeve located around the shaft, and at least two rotatable hubs located around the sleeve. At least one cutter unit is located on each of the two rotatable hubs for rotation about an axis of rotation with respect to a rock-face. Bearings between the sleeve and each of the hubs rotatably support the hubs. The bearings comprise at least one cylindrical roller bearing set and at least one ball bearing set for each hub. Each roller bearing set is located substantially entirely under the cutter unit of its associated hub to absorb radial loads, and each ball bearing set is located remotely from the cutter unit of its associated hub to be isolated from radial loads. The shaft has first and second key receiving openings. The key is located on the interior surface of the sleeve. The key is mateable with the first and second key receiving openings in the shaft whereby the sleeve is rotatable with respect to the shaft from a first position to a second position to disengage the key from the first key receiving opening and engage the key in a second key receiving opening to extend the bearing life.

    Drill pipe having concave wrenching recesses
    44.
    发明专利
    Drill pipe having concave wrenching recesses 未知

    公开(公告)号：ZA963811B

    公开(公告)日：1996-11-25

    申请号：ZA963811

    申请日：1996-05-14

    Applicant: ALTAS COPCO ROBBINS INC

    Inventor： ANDERSON LLEWELLAN

    IPC: E21B17/00 ,  E21B17/04 ,  E21B19/16 ,  B23B ,  B25B ,  E21B

    Abstract: A drill pipe has a central axis and comprises a first end and a second end with a portion of the second end being substantially triangular in the lateral cross-section and having three faces. At least one concave wrench recess is located in each of the three faces of the substantially triangular portion of the second end. Each of the recesses has a surface with an axially extending center line. The center line is located a predetermined distance from the central axis, with this predetermined distance being less than or equal to the distance from the central axis of all other axial lines on the surface of the recess. Each of the recesses may be comprised of two adjoining planes having exterior surfaces, the cross-section of the two adjoining planes forming an angle of less than 180 degrees as measured from the exterior surfaces of the two adjoining planes. Alternatively, the recesses can be comprised of three adjoining planes. Finally, the recesses may be comprised of an arcuate segment.

    47.
    发明专利
    未知

    公开(公告)号：FR721257A

    公开(公告)日：1932-03-01

    申请号：FR721257D

    申请日：1931-08-11

    Applicant: MCKESSON & ROBBINS INC

    IPC: C07C39/06

    ANCHORED/RESILIENT HARDWOOD FLOOR SYSTEM
    48.
    发明专利
    ANCHORED/RESILIENT HARDWOOD FLOOR SYSTEM 未知

    公开(公告)号：CA2166759C

    公开(公告)日：2007-06-19

    申请号：CA2166759

    申请日：1996-01-08

    Applicant: ROBBINS INC

    Inventor： NIESE MICHAEL W

    IPC: E04F15/04 ,  E04F15/22 ,  E04F21/20

    Abstract: An anchored/resilient floor system includes at least one upper flooring layer supported by parallel rows of attachment members which are supported above a base by a plurality of compressible pads, the attachment members being secured to the base at predetermined positions therealong by a fastener construction which permits downward deflection under loaded conditions but prevents vertical raising of the members beyond their initial static position. The attachment members are anchored in a manner which does not hold the pads in a precompressed state when the floor is unloaded. The fastener construction is preferably a plurality of single-piece anchor pins, wherein each anchor pin has a depth stop which limits downward extension into the bore during installation. This single-piece anchor pin construction is particularly suitable for reanchoring or retrofitting an already installed floor at a significantly lower cost than that of installing a new floor, and the one-piece anchor pin may be adapted for use with a portable floor by using internally threaded anchors embedded in the base.

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