Abstract: A liner (interchangeable) for each end bracket of a louver assembly, the liner consisting of a flat strip with longitudinal edge abutment and U-bent at each end to embrace the end margins of the louver pane or panel, with either inturned U-arm disposed to transversely receive a resilient U-shaped retainer jointly embracing the respective arm and adjacent bracket wall, with contact anchorage means carried on both the bent arm and retainer so as to jointly prevent external displacement of the liner (and its embraced louver panel) from the end brackets.

Abstract: A collapsible and hand carryable utility cart formed by short upstanding walls fixed to each other and to a flat, planar bottom, the upper edges of the walls carrying upstanding side panels with bracing pins. Bottom has detachable axle support member with projecting pair of bolts insertable through bottom apertures for engagement inside container. Upon uncoupling, the axle support, individual wheels and U-handle are all storable within the shallow container which with downturned panel walls is carryable or storable on edge or presents its planar bottom for stacking or, upon inversion, provides a work surface.

Abstract: Three piece separable hinge assembly wherein, when closed or nested, a smaller flat leaf is received loosely, coplanar, within a central cut-out area of a larger flat leaf so that the composite hinge occupies the thickness of only one leaf. When this thickness corresponds to the shallow recess or seating niche of an attached structure (e.g. either door or door jamb) to which the leaf is secured, such door can be completely closed without leaving an appreciable gap between it and the adjacent wall. Each leaf, along a common edge, is formed with a jointly aligned bearing tube, which tubes house a cylindrical hinge pin having a tapered, distally converging, engagement neck and flared head. Such pin is removably insertable from either end of the tube. Longitudinally spaced along the bearing tube of the smaller leaf are a pair of tangentially projecting abutment lugs which serve to locate one connected structure (e.g. door) for automatic alignment with the other (e.g.

Abstract: Solid and/or dissolved contaminants are separated from a polar liquid such as water by providing in the contaminated liquid medium a galvanically charged particulate dispersion of defined size, concentration, density and free surface energy, and then flowing such loaded medium through successive treatment zones of an electrically insulated apparatus at a rate defined by dimensionless parameters such as Reynolds Numbers so as to prevent phase separation. Gaseous oxygen adheres to particle surfaces and oxidation is further promoted by bringing medium to pH 2.0 to 2.5 as with sulfur dioxide gas, plus exposure to action of heavy-metal ions such as ferrous/ferric. After air blowing, medium is neutralized and brought to pH 10-11 with continuous aeration of suspended flocculant, then treated with soda ash and optionally additional particulate (recycled sludge), and the contaminant matter then allowed to precipitate with concurrant galvanic grounding of the medium.

Abstract: A rotary cultivator formed with vertically rotating pairs of transverse-ended ground-penetrating spoke-like end-bladed wheels. Such assembly now adds horizontal pairs of fixed cutter blades spaced respectively one outward from the peripheral path of the wheel-blades and the other radially inward therefrom, plus other laterally projecting blades extending into the "open-cage" formed by each pair of mutually-facing bladed wheels. Standing vegetation against which the cultivator is moved may be severed into segments, additionally miniaturized within the open-cage, and churned into the top soil upon penetration of the wheel blades. Trailing vines or weeds which might otherwise attach to and wind around the shaft are also cut off. Such-sub-unit of interacting cutter blades can be added to present rototillers, or be fabricated as part of the initial unit.

Abstract: A transparent, generally cylindrical, wide-mouth pressure retaining vessel or container cast of synthetic resin with a surrounding side wall formed by successively downwardly inset, annular wall segments, and externally reinforced by integral vertical ribs with successive annular edges of the inner stepped face providing support ledges adapted to hold removable shelves upon which freshly cast dentures, acrylic hobby items, pressure-curable art objects, etc. as well as fermentable foodstuff and gas-generating chemicals may be placed for exposure to externally applied and/or internally generated fluid pressure (gas or liquid). Necessity for retention clamps is eliminated by a threadedly mounted closure which carries a manually operable, threaded piston stem disposing a piston in an open-bottom chamber of the cover, which chamber projecting into a container full of liquid causes the latter to fill the piston chamber upon the cover being mounted on the container.

Abstract: Apparatus based on right-angle socket adapted to hold therein either square or round shank of workpiece for grinding faces of latter in diverse arcuate and/or planar patterns. Setting requires use of only two adjustments, each effected with great and easily reproducible accuracy: (a) by slide track for radial displacement of socket from axis of rock shaft (precisely measured by use of gage blocks), (b) angular rotation of socket on corner or edge axis-- angular variation in either direction therefrom defines eccentricity of arc thus ground from reference arc centered on rock shaft. Thus settings for the two dissimilar edges or tail of a trepan bit are each set simply by turning the socket different degrees on its corner edge axis. Alternately, socket can be located for concentric rotation of workpiece by continuous driving shaft instead of rocking.

Abstract: Dental articulator formed with individually adjustable, upper and lower carrier plates, each having means for quick-coupling to one of an interchangeable pair of planar mounts (each mount adapted to adhesively support an assembled denture against one of its faces). A pair of matching dentures can thus be assembled either within or away from the articulator, mounted and tested for occlusion therein, and subsequently reworked (as often as necessary) either within or when removed from the articulator. Essentially a pair of thrust-coupling or threaded attachment means on the carrier plate or on the mount, engage corresponding sockets of the opposite member. Formulation of the mount of inexpensive plastic enables discard after single use.

Abstract: Handleless hand racket formed of three molded plastic parts joined together into assembly formed of (A) channel-shape backing support of a little larger size than the human palm, (B) opposing pair of edge bows, cross linked by longitudinal series of resilient or repellent integral strings, the bows being attached to respective raised edges of the backing support so as to hold the channel-overlying strings under tension, and (C) bulbous hand knob shaped for grasping by a player's clenched fingers with the end of the knob held against the palm, or alternately with straight fingers extended along opposite sides of the knob.

Abstract: Motor driven milling and boring machine used primarily for forming screw threads of any selected pitch, external to cylindrical or conic projection or within similar-shaped bore of workpiece, particularly workpieces such as are too large or irregular-shaped to be themselves rotated. A tubular housing, upstanding or tiltably disposable, journals a longitudinally displaceable and rotatable hanger which in turn axially journals a power-driven spindle having a selectively offset-positionable stub portion, terminally carrying a thus radially extensible drive segment which distally positions a rotary milling cutter. A second or planetary tracking motor jointly operates a pair of selectively coupled ring gears of the housing, which in conjunction with a master nut fixed along the housing axis, move the hanger respectively annularly and axially so that the distal cutter may follow a helical path, the pitch of which path is determined by the chosen velocity ratio give the two ring gears.

Abstract: A starting block assembly for locating at a starting position of a running track. An elongated, ground-anchorable central bar is formed with a pair of back-to-back T-shape lengthwise slide tracks, each opening to a respective side of the bar and receiving therethrough an L-shaped runner which extends from the side of a respective starting block having a spring-tensioned anchor pin receivable in a series of positioning sockets located along the bar. Each triangular shaped block has concave front and rear, transverse contact faces, one with a resilient surface and the other spike-receiving openings to accommodate the shoes of a user. Use of a chosen surface depends on the directional positioning of the assembly. The T-track is self-cleaning of grit which might otherwise jam movement of the L-runner along the track, due to possibility of transversely rocking the block on the longitudinal axis of the runner when the anchor pin is disengaged.

Abstract: A pair of elevating structures to be worn on the feet, each of the structures comprising a ground contact unit to which a vertically separated foot receiving unit is joined to form a unitary structure. The ground contact unit has a horizontal base plate from which rear, side, and front walls extend upwardly to form a hollow structure, a portion of these walls extending further upward in the form of a hollow tower on the rear portion of the unit to which tower the foot receiving unit is joined. The tower extends under the rear half of the foot receiving unit so that the weight of the wearer is centered over the tower and transferred from the tower to the ground contact unit. The forward part of the foot receiving unit is cantilevered from the tower and forms an open area between the forward portion of the foot receiving unit and the lower part of the ground contact unit. The foot receiving unit has semi-flexible walls and means to close the walls about the feet of the wearer.

Abstract: A support pallet carrying at opposite ends thereof, jointly extensible tow-handle and pair of rollers, which pallet can form original-construction false bottom of luggage container such as suit case, or as free form can be extended to form hand cart for manually moving one or several containers. Operating mechanism comprises parallel pair of oppositely (90.degree.) twisted, flat-faced rigid ribbons each simultaneously rotatable on its longitudinal axis and lengthwise forming a helical slide track. Each track is transversely engaged jointly by a bifurcate-ended, slide yoke forming a distal cross arm of a lengthwise displaceable tow handle. Distal end of each track-ribbon is attached to a ground-support roller, which rollers are jointly movable by transverse pivoting between housed and functional positions effected by longitudinal movement of cross-arm-yoke and tow handle.

Abstract: Double cylinder door lock which operates a ceiling- and/or floor-socketed lock bolt which can be added to inner face of already hanging door. Either or both operating cylinders can be key-operated pin tumblers.