Abstract: A cord drive has two cords mounted on two spools. Pulling the first cord unwraps the first cord from the first spool, causes a drive shaft to rotate in one direction, and causes the second cord to wrap onto the second spool. Pulling the second cord unwraps the second cord from the second spool, causes the drive shaft to rotate in the opposite direction, and causes the first cord to wrap onto the first spool.

Abstract: A hydraulic drive with regeneration circuit comprises a pump, a hydraulic actuator and a rotary flow divider which operates in conjunction with valve means to provide regeneration flow for the hydraulic drive.

Abstract: The hydrostatic drive with regeneration circuit comprises a geroter flow divider which operates in conjunction with a two position three way valve and a check valve to provide regeneration flow for the hydrostatic drive when the valve is energized.

Abstract: A greeting card or keepsake card includes a formed, raised image, and it includes panels which protect the front and rear of the formed, raised image. In a preferred embodiment, the front panel of the card also includes an opening through which one can see the raised image when the card is closed, and the front panel includes a pocket on its inside surface for receiving a compact disk or other flat member. Also in a preferred embodiment, the formed, raised image is surrounded by a raised frame, and the raised image panel defines a flat rear perimeter.

Abstract: A conveyor has a drive wheel which is driven from a driveshaft and which moves into and out of driving engagement. In the preferred embodiment, there is a drive gear mounted on the drive shaft, and the drive gear drives a drive wheel, which is mounted on a drive wheel mounting frame that pivots about the axis of the drive shaft, so that the drive wheel is constantly driven from the driveshaft and pivots into and out of driving engagement with the conveyor roller.

Abstract: A urethane is formed in a new way, without requiring the use of isocyanates. The urethane is formed by reacting a compound containing a plurality of cyclocarbonate groups with a diamine in which the two amine groups have different reactivities with cyclocarbonate, so as to form a urethane oligomer with amine end groups. The urethane oligomer can then be reacted in several different ways to form polyurethane.

Abstract: A conveyor transfer unit includes conveyor rollers driven by a drive shaft and transfer belts which are selectively driven to the left and to the right at right angles to the conveyor rollers.

Abstract: A tissue analysis device includes first and second plates which are rigid and radiographically transparent, at least one of the plates defining a plurality of pinholes arranged in an evenly spaced pattern to form a rectangular grid, with at least one of the plates including coordinate markings which can be seen both optically and radiographically to create a rectangular coordinate system for defining each section of the grid.

Abstract: A carton stabilizing device including a top web, a bottom web, first and second side webs, and two tabs projecting downward from said top web.

Abstract: A flight for a chain which has sidebars, comprising a side portion adapted to lie against the outer surface of one sidebar of a chain link. A lip is attached to one end of the side portion and includes a lip portion adapted to contact the inner surface of the sidebar.

Abstract: The present invention provides a chain link for use with a fingered transfer plate. The link comprises a base portion and a raised portion integral with and supported by the base portion. The raised portion includes a plurality of coplanar fork-shaped members, each of the fork-shaped members comprising two prongs and a stem, wherein the prongs of each fork-shaped member are parallel to each other and the width of the stem is less than the distance between the prongs, the fork-shaped members being arranged in a regularly spaced row.

Abstract: An article carrying conveyor chain includes a series of links having parts which slide on flat, spaced supporting rails which also provide the chain with lateral guidance. The link parts engaging the rails are an injection molded thermoplastic having dispersed throughout small particles of a low-friction material such that the exposed portions of the particles provide a dry film lubricant which, as the chain is used, becomes distributed over all of the several surfaces having frictional engagement with the supported articles and with rails. Where the entire link is of integral molded construction, the bearing surface of the link with the connecting pin is thus also provided with the dry film lubricant.

Abstract: A flexible coupling comprising first and second hubs and a center member aligned on a longitudinal axis. At least one spool is also aligned on said axis. There is a plurality of discs forming at least three flexible joints between the hubs, center member and spool, wherein no more than two of the flexible joints permit both axial and angular misalignment, the remainder of the flexible joints including piloting means for eliminating angular misalignment while permitting axial misalignment.

Abstract: A vacuum controller for maintaining a defined vacuum pressure to a remote location, including a housing which defines a cavity. The controller includes means for connecting the cavity to the remote location, to a high vacuum, and to a control signal pressure. There is a cup-shaped plunger, having an opening in its side wall, which is adapted to reciprocate in the cavity, and there is a flexible diaphragm which seals between the housing and the plunger. The diaphragm also operates as a valving mechanism, such that, when the plunger moves in one direction, the diaphragm closes off the opening in the side wall of the plunger, and when the plunger moves in the other direction, it opens the opening.

Abstract: A conveyor chain of the type using extended chain connecting pins to carry articles has short extended connecting pins to which longer conveying pins are attached with a cylindrical coupling bushing. The pin ends are held in the bushing with a light press fit and the bushing is constructed to break away from the extended chain pins if the conveying pins or articles thereon encounter an obstruction in the path of conveyor travel.

Abstract: A device adapted for use as a positively driven steering member in a conveying apparatus, having a wheel with a spherically curved inner surface, a hub with a spherically curved outer surface which fits inside of the wheel, and a coupling which secures the wheel to the hub, permitting the axis of the wheel to be rotated relative to the axis of the hub in any direction while restraining relative motion between the wheel and hub about the axis of the hub. This arrangement provides that, when the hub is driven by a shaft passing through its axis, it drives the wheel, regardless of the angle between the hub and wheel.