摘要:
A face seal for forming a sealed condition between two spaced, opposed surfaces. The face seal includes an inner seal retainer member and an outer seal retainer member each defining an area having an axis therethrough. The inner and outer seal retainer members each having a first axial end portion, an opposite second axial end portion, and an axial extent as measured between the first axial end portion and the second axial end portion. The outer seal retainer member is disposed radially outwardly of the inner seal retainer member, defining a space therebetween. An elastomeric seal member having an axial extent longer than the axial extent of the first and second inner and outer seal retainer members is disposed in a predetermined portion of the space between the inner seal retainer member and the outer seal retainer member. The seal member is deformable so as to conform to the spaced, opposed surfaces for forming the sealed condition therewith and to expand into a portion of the space between the seal member and the retainer members when subject to a compressive force applied by the opposed surfaces.
摘要:
The data cartridge drive belt of this invention comprises a layer of a low stiffness belt material and a layer of a high stiffness belt material. By inserting the belt into the tape cartridge so that the high stiffness belt material is adjacent to the tape pack and the low stiffness material is away from the tape pack the neutral axis in the belt is shifted toward the tape pack.
摘要:
A control lever assembly with handle lockout capability including a lever element selectively positionable in a locking position and lockable therein by movement of a handle thereof to a lock position. A first biasing member is disposed on the lever element in an operative position to exert a first biasing force against a detent element, and a second biasing member is disposed in opposition to the first biasing member and is operable to hold the detent element to allow free pivotal movement of the lever element relative to a base.
摘要:
A belt-driven tape cartridge with reduced tape pack deformation and more spatially homogeneous tape tension. The belt driven tape cartridge has a supply side tape hub and a winding side tape hub both rotatably mounted on the base. The tape is wound around the hubs to form a tape pack about each hub. A drive roller is rotatably mounted on the base. First and second rollers are rotatably mounted on the base. The drive belt is engaged on the drive roller, the tape pack on the supply side tape hub, the first and second corner rollers, and the tape pack on the winding side tape hub. The pack belt is engaged between the first and second corner rollers and disposed on the inner side of the drive belt. The drive belt has a width less than a width of the pack belt such that tape pack deformation is reduced and the tape tension is more spatially homogeneous.
摘要:
A pack belt or similar mechanism is provided in a two hub, belt-driven data cartridge to press against the tape pack on the take-up hub side of the cartridge when approximately half of the tape has wound onto that hub. The added load from this pressure reduces the speed of the tape-up hub, which in turn reduces the speed differential between the two hubs. Since the speed differential between the hubs causes a gradient in tape tension (bow-tie) as the tape is moved from BOT to EOT, this reduces or eliminates the bow-tie. Adjustment of the relative tensions between the drive belt and the pack belt allows adjustment of the bow-tie, ranging from the normal bow-tie, to near zero bow-tie, to a negative bow-tie. Coating one side each of the drive belt and the pack belt, then having the coated side of the drive belt contact the uncoated side of the pack belt further reduces bow-tie. Combining the pack belt with self-acting hydrodynamically lubricated guides significantly improves the efficiency of the cartridge/drive system at low tape travel speeds.
摘要:
Hydraulic piston pumps and motors are used in various applications to power implements, steering, propel, and auxiliary systems. However, it is important to keep the piston weight and compressible fluid volume low in order to have a smaller more efficient pump. The subject piston is manufactured in a simple manner to achieve a reliable, light weight design. The piston has a cylindrical body having an outer surface. The piston is manufactured by forming a first bore having a large diameter in the body extending from the outer surface and terminating at an annular shoulder. A second bore is formed which extends from the annular shoulder to a predetermined depth. A tube is inserted through the bore and extends a predetermined distance into the second bore. A cap has a bore and is positioned on the body in abutment with at least a portion of the outer surface. The cap slidably receives the tube through the bore. The cap is brazed to the body and the tube is brazed to the cap and to the body to form an isolated annular cavity in the piston.
摘要:
A technique provides an orientation system combined with downhole equipment used in a well. An orientation device is mounted in the downhole equipment, e.g. a bottom hole assembly, for actuation during angular displacement of the downhole equipment. A sensor is mounted to cooperate with the orientation device in detecting the angular displacement.
摘要:
A technique provides an orientation system combined with downhole equipment used in a well. An orientation device is mounted in the downhole equipment, e.g. a bottom hole assembly, for actuation during angular displacement of the downhole equipment. A sensor is mounted to cooperate with the orientation device in detecting the angular displacement.
摘要:
A fluid motor including an inner race and an outer race is disclosed. The inner and outer races are configured to rotate about a substantially common axis. The motor also includes at least one fluid actuator configured to produce substantially linear motion as a function of selectively receiving pressurized fluid. The fluid motor also includes at least one sprag configured to rotate the inner and outer races about the axis as a function of the substantially linear motion.
摘要:
A sprag and bearing system including a sprag is disclosed. The sprag includes an integral body having an oblong cross sectional circumference at least one actuator configured to selectively rotate the body about an axis in a first direction. The sprag also includes at least one spring configured to bias the body to rotate about the axis in a second direction.