Abstract: A roller system includes a frame, an upper roller assembly, a lower roller assembly and an actuator. In one embodiment, the upper roller assembly includes a first rotatably supported cylindrical member. The lower roller assembly is movably supported by the frame below the upper roller assembly and includes a second rotatably supported cylindrical member. The actuator is configured to move the second cylindrical member between an elevated position and a lowered position. In another embodiment, the roller system includes a frame, at least one upper track, an upper roller assembly, at least one lower track and a lower roller assembly. The upper roller assembly includes a first rotatably supported cylindrical member extending along an upper axis. The upper roller assembly is supported by the upper track and moves along the upper axis between an operation position and a removed position. The lower roller assembly includes a second rotatably supported cylindrical member extending along a lower axis.

Abstract: A roller system includes a frame, an upper roller assembly, a lower roller assembly and an actuator. In one embodiment, the upper roller assembly includes a first rotatably supported cylindrical member. The lower roller assembly is movably supported by the frame below the upper roller assembly and includes a second rotatably supported cylindrical member. The actuator is configured to move the second cylindrical member between an elevated position and a lowered position. In another embodiment, the roller system includes a frame, at least one upper track, an upper roller assembly, at least one lower track and a lower roller assembly. The upper roller assembly includes a first rotatably supported cylindrical member extending along an upper axis. The upper roller assembly is supported by the upper track and moves along the upper axis between an operation position and a removed position. The lower roller assembly includes a second rotatably supported cylindrical member extending along a lower axis.

Abstract: The exercise helmet of the present invention includes an outer shell which would preferably be constructed of a sturdy plastic, and an inner shell which would function as an impact absorbing liner. Support plates are provided at the sides of the helmet to support shafts which extend outwardly from the support plates. Weighted plates may be placed on the shafts to provide resistance for exercise when the helmet is worn. A yoke accessory is provided for attachment to a cable of a conventional weight machine, for providing resistance instead of the weighted plates. An adjustable chin strap is provided for securing the helmet more securely to a wearer's head, and for increasing the exercise effect on facial muscles.

Abstract: A multi-purpose bib for infants and children which includes a generally triangular-shaped, scarf-like panels constructed of a flexible fabric material such as terrycloth having an optional applique stitched or otherwise attached to the lower frontal area thereof. In a preferred embodiment, opposite apex portions of the bib are fitted with connecting loop and pile elements, respectively, of a loop-pile fastener and the third, downwardly-extending apex portion of the bib receives the optional applique. Accordingly, the bib is capable of being placed around an infant's neck with the loop and pile elements attached and the applique facing outwardly. The bib can then be shaped to flatten the top margin or frontal neck portion between the two fastening apex portions, in order to capture saliva. Furthermore, the downwardly-extending apex of the bib can be turned upwardly in a fold which retains the apex in an upwardly and outwardly-extending configuration.

Abstract: An offshore facility for use in an arctic body of water to produce, store, and offload hydrocarbons. The facility comprises a main structure which includes storage tanks, production equipment, etc., and which has a marine docking slip constructed therein and adapted to receive and moor a vessel, e.g., a tanker ship, therein to protect the vessel against moving ice. To protect the vessel while it is moored in the slip, a means is provided to keep the water in the slip from freezing.

Abstract: The present invention provides a multiple-partitioned shelf unit comprising a rigid open-ended shelf having a four-sided, substantially horizontal floor, a four-sided substantially horizontal ceiling, and means supporting said ceiling above said floor. The supporting means includes two spaced-apart upstanding members defining therebetween the horizontal extent of the shelf open end. The ceiling further includes a downwardly-extending lip. The free end of the lip and floor define therebetween the vertical extent of the shelf open end. The shelf unit further includes a fiberboard shell having an upstanding rear panel hingedly connected to two upstanding side panels. The shell is positioned within the shelf with said rear panel rearward of the shell's open end and the free ends of the side panels each being disposed at opposite ends of shelf open end, each adjacent and inward of one of the upstanding members, and at least a portion of each of the side panels extends behind the lip.

Abstract: A copy holder which simultaneously positions and supports a first relatively loose display and a second relatively fixed display in a manner so that the displays does not interfere with each other. A rigid support member defines a flat display panel, a pair of side flanges and a lower supporting ledge. Leg means supports the panel in a selected upright position. A mounting means in the form of a transparent sheet is removably mounted to the support member so as to extend over the flat display panel. A first display can be loosely supported on the ledge in front of the transparent sheet. A second display can be more permanently positioned between the transparent sheet and the panel, so as to be visable through the transparent sheet. Magnet means can be provided to movably retain the loose first display in position against the front of the transparent sheet. A line guide also is preferably provided and movably mounted to the rigid support member in front of the transparent sheet.

Abstract: A method to increase the effective permeability of a subterranean hydrocarbon-bearing formation employing a deviated well-drilling scheme and a fracturing technique.

Abstract: Blood cells, blood marrow, and other similar biological tissue is frozen while in a polyethylene bag placed in abutting relationship against opposed walls of a pair of heaters. The bag and tissue are cooled with refrigerating gas at a time programmed rate at least equal to the maximum cooling rate needed at any time during the freezing process. The temperature of the bag, and hence of the tissue, is compared with a time programmed desired value for the tissue temperature to derive an error indication. The heater is activated in response to the error indication so that the temperature of the tissue follows the desired value for the time programmed tissue temperature. The tissue is heated to compensate for excessive cooling of the tissue as a result of the cooling by the refrigerating gas. In response to the error signal, the heater is deactivated while the latent heat of fusion is being removed from the tissue while the tissue is changing phase from liquid to solid.

Abstract: A process for removing turbidity from apple juices is disclosed; said process comprising treatment of said juices with silica hydrogel and filtering through a diatomaceous earth filtering medium.