公开(公告)号：NO315819B1

公开(公告)日：2003-10-27

申请号：NO943252

申请日：1994-09-02

Applicant: STANLEY LLOYD

Inventor： STANLEY LLOYD

IPC: F04B9/105 ,  F04B47/04 ,  F04B53/00 ,  F04B53/16

Abstract: A hydraulic oil well pump drive system for driving an oil well sucker rod includes a wellhead hydraulic assembly that is operably connected to the oil well sucker rod to reciprocate the sucker rod. The wellhead hydraulic assembly includes a hydraulic cylinder and a rod that reciprocates linearly within the hydraulic cylinder. The rod has an upper end with a circumferential groove that receives a split cylindrical bearing. The split cylindrical bearing is has two semicircular halves retained within the groove by the inner walls of the cylinder. The halves are retained vertically, relative to the rod, by the groove itself.

公开(公告)号：GB2278892B

公开(公告)日：1996-08-28

申请号：GB9417449

申请日：1993-03-01

Applicant: STANLEY LLOYD

Inventor： STANLEY LLOYD

IPC: F04B9/105 ,  F04B47/04 ,  F04B53/00 ,  F04B53/16

Abstract: A hydraulic oil well pump drive system for driving an oil well sucker rod includes a wellhead hydraulic assembly that is operably connected to the oil well sucker rod to reciprocate the sucker rod. The wellhead hydraulic assembly includes a hydraulic cylinder and a rod that reciprocates linearly within the hydraulic cylinder. The rod has an upper end with a circumferential groove that receives a split cylindrical bearing. The split cylindrical bearing is has two semicircular halves retained within the groove by the inner walls of the cylinder. The halves are retained vertically, relative to the rod, by the groove itself.

公开(公告)号：CA2131192A1

公开(公告)日：1993-09-16

申请号：CA2131192

申请日：1993-03-01

Applicant: STANLEY LLOYD

Inventor： STANLEY LLOYD

IPC: F04B9/105 ,  F04B47/04 ,  F04B53/00 ,  F04B53/16 ,  F04B21/08

Abstract: 2131193 9316897 PCTABS00025 A wheel chocking system (10) for restraining road vehicles being transported on a vehicle support surface of a transport vehicle is disclosed. The support surface has a grating (11) disposed in at least a wheel support area where one or more road vehicles are positioned. The grating (11) is formed by a grid of rods to which are secured chock members (16) at desired positions relative to the position of the wheels (14) of the road vehicle positioned over the wheel support area. Each chock (16) has a base with disengageable attachment members in a lower engaging surface thereof to immovably secure the chock (16) to the grating (11). The chock has an angulated face plate which is positioned relative to an outer tread surface of a tire of a wheel to restrain movement thereof. Load transmitting members transfer a load applied to the face plate onto the base member and into the grating secured to the support surface. A lateral restraining member (17) is provided on a side of the face plate and disposed adjacent an inner side wall portion of the tire (14) to prevent lateral shifting of the vehicle positioned on the support surface.