Abstract: A disassembleable clothes or other garment rack or stand having a base, a supporting axle rod extending upwardly from the base and a plurality of spool-like elements separated from each other, and disposed for rotation about the rod at different height levels, and each said element having angularly, upwardly extending peg-type hangers insertable into it, with each of said elements and its hangers being greater in size and extent than the element and its hangers at the level immediately below. The stand may be converted into a decorative simulated tree by providing an annular support member having a plurality of spaced-apart coaxial rings disposed on the top of the base arm branches hung from the peg hangers and resting upon the coaxial rings.

Abstract: A disassemblable chair constructed of three corrugated paper board elements brought together and interlocked by slotting in each of the elements. The first and basic element may be die cut from a rectangular corrugated board sheet which is creased, bent over and secured along overlapping edges to form a rectangular cross sectional seat and back support. A second rectangular slotted element is disposed transversely across the seat supporting edges of the first element to complete the seat support; and a third rectangular element is laid over the seat and back support and secured by insertion of its end and a center fold into interlocking slotting in the first element.

Abstract: An improvement to a tubular height adjustable crutch of the type having a foot telescopically slidable within a carrier tube supported between the parallel lower ends of two crutch bows, where the crutch bow ends are right cylinders cut so as to form a right angle corner with the footpiece or carrier tube. A unitary end cap is fitted over the bow ends and the carrier tube for retaining these three members together and to provide an integral bushing for supporting the footpiece against wobbling within the carrier tube. The improvement consists of modifying the cap bottom to provide slanting edges or surfaces for deflecting staircase edges away from possible engagement with the corner defined between the bow ends and the carrier tube, thus preventing consequent injury to the crutch user.

Abstract: A cat litter box system including a tray which may have inwardly canted edges and a waterproof bottom. Inserted in the tray is at least one orificed filter sheet, and prefereably several, having some type of corner or edge lifting means. Also desirably provided is a filter protector comprising a mat having upward extending protrusions disposed in register with the filter sheet orifices to pass through the latter and protect the filter sheets from damage by the clawing of the cat through litter material which is deposited in the tray over the filter sheets and the filter protector, where the latter is also used. Deodorizing strips, capsules and/or filter protector tips may also be provided.

Abstract: An assemblable and disassemblable table formed by a die-cut rectangular sheet of corrugated paper board having pieces removed from its corners and central side areas to leave four pairs of oppositely projecting members, each of which pairs is bisected by first creases for inward folding and to define the table top with further 45 degree angle creasing extending outwardly from the intersections of the first creases. Each member is slotted at its extremity so that, when folded inwardly its slotting registers with the slotting of an adjacent most proximate member, one side of which folds into abutment with it to constitute a table leg when secured by a further slotted rectangular element bent at a 90 degree angle along a bisecting crease line and inserted with its slotting interlocking with the registering slotting of abutting members.

Abstract: A removable pump assembly for use in a cryogenic storage tank pumps liquid cryogen directly from the primary storage container with low boiloff loss. The cryogenic storage tank has an outer vessel, an inner vessel, an evacuated insulation space therebetween and a access port connecting the inner and outer vessels and providing an open cylindrical access to the interior of the cryogenic tank. A pump mounting tube assembly is disposed into the interior of the inner vessel of the cryogenic tank through the access port and includes an inner pump mounting tube and an outer pump mounting tube which are joined at their upper and lower rims to define an insulating jacket between the two tubes. The inner and outer pump mounting tubes are affixed at their upper ends to a top and bottom plate. The top and bottom plate in turn is affixed to an insulating block. Only the insulating block, which is disposed in the access port of the cryogenic tube, is in contact with any portion of the cryogenic tank.

Abstract: A ski has at least two downwardly-extending projections (10, 16, 16B), at least one on each side of the longitudinal axis of the ski, these being integral with the remainder of the ski separate members, in the form of an inverted channel member (7), the base (7A) of the channel, on the upper side of the channel member (7), lying above and being secured to the tail (1) of the ski, which extends between the side walls (7B) of the channel member (7). When the ski is placed on a flat horizontal surface, with the running face (3) of the ski lowermost, the tips (10A, 16A) of the projections (10, 16, 16B), at the lowermost extremities of the projections, will be separated only by an air gap from the surface.

Abstract: A pull-type blind fastener has a pin slideable through a tubular selectively annealed sleeve, the pin having a pin head permanently bonded to a blind side end of the sleeve, a hollow rivet head formed on the opposite end of the sleeve, and a raised abutment on the rivet head engageable by a conventional rivet setting tool. The rivet head collapses under the differential pulling force applied by the setting tool to a condition of reduced aperture for engaging a stop shoulder on the pin thus limiting axial pin travel at a flush breaking position.

Abstract: A liquid cryogen vaporizer is devised in which the cryogenic liquid is first partially vaporized in a cryogenic heat exchanger which is provided with heat from nonfired sources. The partially vaporized liquid cryogen is then completely vaporized in a second downstream cryogenic heat exchanger also provided with heat from the nonfired sources. The nonfired sources comprise an internal combustion engine and an ambient air heat exchanger. The internal combustion engine drives a hydraulic circuit which provides a constant load on the engine. A cryogenic pump used to flow the cryogenic liquid through the cryogenic heat exchanger is in turn hydraulically driven from this circuit. Heat is also transferred from the hydraulic circuit into a heat exchanging circuit. The heat exchanging fluid is driven around the heat exchanging circuit by means of a pump driven by the engine through the ambient air heat exchanger, a hydraulic heat exchanger and the first cryogenic heat exchanger.

Abstract: A fluid tight metallic blind rivet, for aerospace applications, is disclosed comprising a tubular rivet body that is obtained by providing an outer ductile sleeve or jacket on an approved aerospace rivet body wherein the rivet is set by collapsing the body by means of a pull-stem that is locked relative to the body when the rivet is set.

Abstract: An external combustion engine is provided with an engine body containing a cylinder, a working fluid within the cylinder, and a displacer piston reciprocable between two ends of the cylinder. A heat exchanger matrix permeable to said working fluid is provided at one end of the cylinder. The movement of the displacer establishes a flow path through a limited portion of the matrix such that the working fluid exchanges heat with different portions of the matrix at different displacer positions as the fluid is displaced between the two ends of the cylinder.

Abstract: A walking aid adapted for use either before or behind the invalid user and comprising a pair of tubular side sections spaced apart and connected by a transverse brace at one pair of opposed ends to form a four legged free standing walker frame. Each side section support and adjustably disposable upwardly extending hand support enable the latter to be best positioned for the user and for the use of the walker in either its fore of after the patient position.

Abstract: A high temperature resistant liner of refractory material is used to line the displacer chamber so as to permit engine operation at temperature beyond those possible with metallic chamber walls. A compression sleeve or ring of high tensile strength material circumferentially encompasses the liner and preloads the liner against the forces of the highly pressurized working fluid in the displacer chamber.

Abstract: A method as disclosed for preventing the formation of Newton ring light patterns between a transparency or photographic negative and a transparent mounting surface such as a sheet of glass. The method comprises the application of a thin film of a substantially transparent resin to form a matte surface finish on the surface of the transparency to be applied against the mounting surface and then mounting the transparency or equivalent to the mounting surface with the resin film interposed therebetween, such that the matte resin film serves as a spacer and also reduces reflection of light between the transparency surface and the mounting surface.

Abstract: The present invention improves over the prior art by providing a method and apparatus for composing typographical artwork on color sensitive photographic medium, which method and apparatus may be of an automated nature. The apparatus comprises an optical projector, a number of type characters recorded on a projection medium, such as a strip of film, for projection by the optical projector onto a projection plane, such as a table surface, and may include an encasing light-tight hood. The identity (e.g. the location on the inventory film strip) of the letters selected to make up the sequence of images projected onto the table surface is recorded and stored in a storage memory together with information indicative of the position of the projected images of each of the selected letters along the two orthogonal axes of movement of the table surface.

Abstract: An evaporative self-chilling dispensing container for potable liquids has a wall of porous material immersible in a coolant fluid defining an inner wall surface, an outer wall surface, and a generally transverse lip surface joining the inner and outer surfaces. The inner wall surface defines a cavity for receiving a potable liquid and a mouth opening rimmed by the lip surface. A thin impermeable layer fully lines the interior wall surface and extends uninterruptedly outwardly over the lip surface to prevent intermixing of the coolant fluid with the potable liquid during storage and also while said potable liquid is poured from the container.

Abstract: A hollow vessel of unglazed terra cotta pottery which, when moistened, keeps the temperature of a salad below room temperature when it is removed from the refrigerator to the dining table for comsumption. Leftover salad, even when impregnated with salad dressing, may be stored in this vessel in the refrigerator for several days, without losing either its crispness or its flavor.

Abstract: Apparatus for playing an adult game based upon possible legal and business activities and possible experiences of selected professional type persons. Spaces are provided on a board for the movement of symbolic elements representing each professional person with the number of spaces moved determined by chance, subject, however, to specific instructions affecting the movement of the symbolic elements as determined by instructions on the spaces on the board. A stack of cards is provided for each professional space on the second board, with each card providing either good or bad information concerning a client's relationship with the person of that profession and on the basis thereof, if the card information is good, indicating the amount of money to be paid by the client to the professional person; or, if bad, a basis for a malpractice suit and the formula for a possible monetary recovery against the professional person through suit or arbitration of the matter.