Abstract: Systems and methods for providing a hydraulic lift device for use in producing a subterranean well. In some cases, the hydraulic lift device includes a hydraulic cylinder having a first cylindrical sleeve slidably coupled to a second cylindrical sleeve, wherein the first and second sleeves define a hollow channel to accommodate passage of a polished rod. In some cases, the first cylindrical sleeve includes a surface for securing a portion of the polished rod. Additionally, in some cases, the lift device includes a port in fluid communication with the hollow channel, wherein the port is configured to receive an inlet line from a hydraulic pump. In some cases, the lift device also includes a guidance system disposed at least partially outside the hydraulic cylinder, wherein the guidance system is configured to prevent axial rotation of the first cylindrical sleeve with resect to the second cylindrical sleeve. Other implementations are described.

Abstract: A method for efficient communication from a cellular telephone handset. The method begins with the step of providing a cellular telephone handset, including an interface to a computer software system for requesting a call and providing a desired call number. Then, the system sends a message from the handset to a base computer, requesting a call and specifying a desired telephone number. The base computer receives the message and generates a conference call request to a telephone network provider, specifying the numbers of the handset and the desired telephone number. The telephone network conducts a conference call via the telephone network between the handset and the desired number.

Abstract: A top rail assembly (20) utilizes a support brace (22) and an awning mount groove (26) recessed in a rail body (24) to provide a strong top rail assembly (20) without using undue space or degrading aesthetics. The brace (22) extends between a side wall brace tab (72) and a roof brace tab (64) to reinforce the top rail body (24) and define a wire chase opening (76) between the brace (22) and a tansition section (74) of the body (24). The groove (26) is recessed into the rail body (24) and is defined by two opposed legs (80, 82) and a bottom segment (84) which are integral to the rail body (24).

Abstract: A top rail assembly (20) utilizes a support brace (22) and an awning mount groove (26) recessed in a rail body (24) to provide a strong top rail assembly (20) without using undue space or degrading aesthetics. The brace (22) extends between a side wall brace tab (72) and a roof brace tab (64) to reinforce the top rail body (24) and define a wire chase opening (76) between the brace (22) and a transition section (74) of the body (24). The groove (26) is recessed into the rail body (24) and is defined by two opposed legs (80, 82) and a bottom segment (84) which are integral to the rail body (24).

Abstract: An improved slat construction (20) for use in a livestock trailer (22) includes a double skin slat (24) connected to upright posts (38) of the trailer (22) with weld connections (68). The slat (24) includes an inner skin (26), an outer skin (28), a plurality of bulkheads (30), and female and male edge connections (32, 34). The inner and outer skins (26, 28) are spaced apart to define a gap (62) therebetween, and the bulkheads (30) are positioned in the gap (62) and connect to the inner and outer skins (26, 28) to divide the gap (62) into internal chambers which inhibit heat transfer by convection. The female connection (32) includes opposed legs (78) defining a groove (80) therebetween, and the male connection (34) includes a tongue (74) inserted into the groove (80) to connect adjacent slats (24).

Abstract: Apparatus is provided for use with a packer positionable in a casing in which the packer has an upstanding male location member having a noncircular peripheral configuration having a circumferential slot adjacent the upper end, a female insertion member having means at the upper end for attachment to the lower end of a pipe string extending from the earth's surface and having a recess in the lower end slidably and nonrotatably receiving the upper end of the male location member and having an upper internal recess communicating with the tool open bottom, the recess having an internal enlarged diameter groove therein and a plurality of clips each configured as a segment of a washer positioned in the internal recess of the retrieval tool and having an elastomeric member therearound to inwardly bias the clips towards each other, the clips being expandable outwardly within the groove to receive the upper end of the location member and to enter into the external circumferential groove in the location member to ther

Abstract: A retrievable packer for use in an oilwell casing, the packer having a central shaft with means at the upper end for attachment of an insertion or retrieval tool, an upper body portion having an opening receiving the shaft and having an integral downwardly extending tubular sleeve, the area around the sleeve providing an annular upper gland surface, a lower body portion having an opening receiving the shaft and a larger opening slidably receiving the sleeve and providing a lower annular flange surface, the lower body portion having a plurality of slots formed in vertical planes of the shaft axis, a baseplate having a threaded opening therein receiving the threaded lower end of the shaft, the baseplate serving to engage slips positioned in the slots so that as the shaft is rotated the baseplate moves up to force the slip into contact with the casing in which the packer is positioned, and an elastomeric packing gland of tubular cross-sectional shape received on the sleeve and between the upper and lower gland s