Abstract: A light fixture including a channel-shape open ended housing having a top wall and opposed walls. End caps are provided for the housing, each including an end plate with a pair of longitudinally extending tabs spaced laterally apart and formed on their proximate edges with longtiudinal tongues. The caps are reversible such that in one mounted position the tabs project longitudinally outwardly from the housing for acting as mounting tabs when the housing is to be recessed upwardly in the overhead for flush mounting. The caps may be reversed on the ends of the housing to dispose the tabs within the housing itself. In this configuration a pair of lamp sockets may be mounted directly from the tabs. The lamp sockets are formed on their opposite sides with longitudinal grooves into which such tongues are received in a friction fit arrangement to be held in position.

Abstract: Angled balloon dilatation catheter having a flexible elongate tubular member with first and second lumens extending therethrough and with proximal and distal extremities. An angled balloon is carried by the distal extremity of the tubular member. The elongate tubular member has a tubular element extending through the balloon. The first lumen extends through the tubular element and is capable of receiving a guide wire so that the guide wire extends therethrough. The second lumen is in communication with the interior of the angled balloon for inflating and deflating the balloon. The balloon subtends a predetermined interior angle.

Abstract: A leveller for a ladder has a pair of sliding legs telescopically engagable in respective up-right tubes (which may constitute the stiles of the ladder or separate tubes to be fixed to the stile of a ladder), and a substantially uniform continuous flexible ligament such as a wire rope fixed to upper regions of the legs and extending between the tubes and engaging with a support guide means which is fixed relative to the ladder structure or relative to the other apparatus on which the levelling device is mounted. When loaded, the ladder transmits its load through the support guide means to tension the ligament but when the load is removed (for example by subsidence of the ground beneath one of the legs) tension is released from the ligament allowing it to slide over the support guide means to cause rapid readjustment of the relative vertical positions of the ladder to compensate for variations in ground level, whereby the ladder is maintained in its desired attitude.

Abstract: The filter has a spiral of, or parallel, spaced lengths of, double-ply material whose plies are seamed together along spaced, longitudinal seams to provide an array of side-by-side tubes. The filter support material is highly flexible and has a thickness not greater than 1 mm. Due to the tubular formation, the filter support has an uninterrupted filter zone of substantial area relative to the total area of the filter support; during filtration (when the filter support is under the pressure of the feed) the tube walls bulge out and the filter zone is restrained solely by tensile forces in the filter support itself. Substantial movement of the filter support is possible in the direction at right angles to its face when the pressures on either side of the filter support are equal.

Abstract: A retaining device for retaining a roll of material in a box. The roll has a hollow inner core and the box has side and end walls. The device includes a base and a projection extending outwardly from the base and able to extend into the hollow core of the roll to allow the roll to rotate along its longitudinal axis but to prevent the core from being pulled out of the box. The projection is positioned to engage against the inner surface of the hollow core. The base can be secured to an end wall of the box. The invention includes a system for placing the retaining device in position in the box.

Abstract: A tie down fitting adapted to fit within a stake hole in a side wall section of a pickup truck. The fitting includes a clamping plate dimensioned for insertion through the stake hole for engagement with the underside of the wall section. A cover plate engages the upper side of the section and is secured to the clamping plate by threaded fasteners. Aligned slots in the plates receive a hook member for pivotal movement between a recessed position flush with the wall section to a projected position where it is adapted for engagement by a cargo securing line or the like. A number of such fittings enable securement of cargo on the truck bed.In its recessed position the fitting is pressed to pivot it toward its projected position. Its center of gravity tends to maintain it in either its recessed or its projected position.

Abstract: This invention is directed to an improved low voltage fluorescent lighting system having two elongated fluorescent lamps. The invention provides an improved simple switching system which allows one or both lamps to be turned on. The improved switching system includes a high capacitance by-pass circuit parallel to one of the fluorescent lamps which, when closed, by-passes sufficient current so that the lamp in parallel will not be lit.

Abstract: A convertible purse includes an outer purse having a plurality of panels defining an interior cavity, an inner purse, sized to be received within the interior cavity, the inner purse having a plurality of panels defining various compartments therein, some of the compartments having zippers with distinguishing indicia on their pull tabs, and a fastener to releasably attached the inner purse to the outer purse and allowing the inner purse to be interchanged with other outer purses.

Abstract: An adjustable attitude speaker stand including a base in the form of a pair of laterally spaced apart elongated rails having longitudinal slots formed therein. A pair of posts rise upwardly from the slots and are coupled thereto by followers for forward and rearward movement relative thereto. The upper extremities of the post are also formed with generally vertically extending slots and braces are pivotally connected to the rear extremities of the rails and include followers coupled with such post slots such that the posts may be adjusted forwardly and rearwardly at both their top and bottom ends. A pair of support arms project cantileverly forwardly from the lower portion of the post for receiving and cradling a load speaker such that adjustment of the posts will vary the attitude of such arms to direct sound from the speaker at selected angles from a range projecting generally horizontally across the room to a upward angle of about 45.degree..

Abstract: Proximal manifold and adapter device for use with a catheter having first and second lumens. A manifold having a plurality of arms is provided. One of the arms has a passage therein in communication with the first lumen. Another of the arms is in communication with the second lumen. An interconnector connects said first and second arms for establishing communication between the same. The innerconnector means includes a housing having an inlet port and a valve for establishing communication between the inlet port and the side arms.

Abstract: A waste attachment for a router. A first housing is connected to a vacuum source and attached to a router base. A second housing is slidably attached to the first housing. An arm extends from the second housing and ends in an inlet to receive router waste. The arm is used when the waste attachment is in its useful position on a router, into contact with the work piece being routed.

Abstract: Balloon dilatation catheter adapted to be utilized in connection with a guiding catheter and a guide wire. The catheter comprises a flexible elongate tubular member having proximal and distal extremities and having a lumen extending therethrough. An inflatable balloon is mounted on the distal extremity of the tubular member. The interior of the inflatable balloon is in communication with the lumen. A sleeve extends through the balloon and extends rearwardly from the balloon and alongside the lumen. The sleeve has a guidewire lumen extending therethrough. The guidewire lumen is adapted to receive a guide wire extending therethrough and extending rearwardly of the flexible elongate element into a region adjacent the proximal extremity of the proximal elongate element. The sleeve has a slit extending longitudinally of the same from the proximal extremity of the sleeve to a region adjacent the balloon permitting the guide wire to be removed therethrough.

Abstract: Floppy guide wire comprising an elongate flexible element formed of a metallic material. The element has a cylindrical proximal portion, a tapered intermediate portion and a flattened distal portion. A coil formed of a substantially radiopaque material is secured to said element and is generally concentric with the element. The coil extends beyond a rounded metallic protrusion is carried by the distal extremity of the coil and is spaced from the distal extremity of the flexible elongate element. A safety wire is disposed within the coil and is secured to the protrusion and to the flexible elongate element.

Abstract: The invention is directed to a method and system for classifying particulate matter wherein unclassified particulate is projected into a spiraling fluid stream passing through an annular classifying zone. The particulate is projected into the fluid stream from the inner boundary of the classifying zone and the particulate passes through the fluid stream according to the size or density of the particles thereby facilitating the classification of the particles. The fluid stream with the particulate entrained therein is separated into a plurality of annular streams at the end of the classification zone thereby separating the particulate into distinct size fractions.

Abstract: A tamper proof hasp apparatus for use with a conventional padlock incorporating a U-shaped attached shackle pivotable, when unlocked, about a shackle pivot leg. The apparatus includes first and second hasps incorporating respective first and second hasp plates formed on one end with an opening for receipt laterally thereinto of the pivot leg of the shackle and formed on the opposite end with bores for receiving the closure leg of such shackle. The closure bore of the first plate is of such a diameter as to receive the closure leg of the hasp and to engage the curved portion thereof to limit the extent to which such hasp may be inserted. The respective hasps are formed with guard plates projecting laterally thereof to, when such hasps are mounted on respective parts to be locked together, restrict access to such shackle by tampering tools such as bolt cutters, hacksaws and the like.

Abstract: A student's parachute harness attaches to an instructor's parachute harness allowing both to descend in tandem. Detaching snaps at the shoulders and waist of the student's harness detachably engage fittings on generally corresponding portions of the instructor's harness to couple the tandem in proper relative body positions. The fittings at the instructor's shoulders are load distribution fittings which have a flat tangential portion connected to the canopy and reserve risers and a forwardly jutting portion connected to a snap hook on the student's harness. A drogue provides stabilization during a prone free fall by having its riser connected to the instructor's harness where the shoulder straps cross each other in the center of the instructor's back. Pulling a rip cord at the end of the drogue free fall detaches the drogue bridle from the drogue riser to release the drogue which deploys the canopy from a container attached to the instructor's harness.

Abstract: Cattle stanchion apparatus in which a plurality of fixed and release stanchions define a row of head openings for animals, the release stanchions tending to pivot to open positions. Double latches at the upper extremities of the release stanchions are engageable by couplers carried by a rotatable and axially movable positioner. An operating mechanism is actuable to axially move the positioner and engage the latches of the release stanchions to move them in unison, and an associated rotating mechanism is actuable to rotate the positioner and thereby move the couplers into and out of possible engagement with the latches. The arrangement gives the operator the capability of moving all of the release stanchions to closed positions to lock the animals in the feeding stalls, or allowing the animals individually to actuate the system to lock themselves in, or allowing the animals to enter and leave the stalls as they wish.