Abstract: A cassette having a leader and recordable tape which cleans the various components of the tape path in videocassette recorders by dry scrubbing. Interactive diagnostic and instructional material is recorded on the tape to instruct the operator about the cleaning operation to enable the operator to evaluate progress of the head cleaning operation, and to program the maintenance protocol of head cleaning cycles relative to capstan cleaning cycles.

Abstract: A support rack for releasably and securely holding and separately supporting a plurality of objects. The rack has a plurality of arms each of which is constructed to support a separate object such as an automobile frame. The arms of the rack are linked together such that when an object is placed on a first arm, a second arm is moved into position to receive the next object to be loaded onto the rack. When the next object is loaded onto the second arm, a third arm is moved into position to receive the next object to be loaded onto the rack, and so on. In addition to moving the succeeding arm into position to receive an object, when an object is loaded onto an arm a lock adjacent to the preceding arm is preferably also moved into a locking position securing the object on the preceding arm.

Abstract: A process for producing carbon blacks comprised of mixing an oxidant, primary fuel, and carbon black feedstock to form carbon black particles and aggregates, passing the mixture through a reactor, cooling, separating, and recovering the carbon black product. The improvement comprises the addition of a secondary oxidant-containing stream to the reactor such that the secondary oxidant stream does not interfere with the formation of the carbon black particles and aggregates in the reactor. Also disclosed are new carbon black products defined by the following parameters:35 mg/g.ltoreq.I.sub.2 No..ltoreq.65 mg/g30 m.sup.2 g.ltoreq.CTAB.ltoreq.55 m.sup.2 g1.12 mg/m.sup.2 .ltoreq.I.sub.2 No./CTAB ratioTint.ltoreq.65%75 cc/100 g.ltoreq.CDBP.ltoreq.95 cc/100 gAlso disclosed are rubber and/or plastic compositions containing the new carbon blacks.

Abstract: A play system floor includes a frame defining the periphery of an area to be floored and a webbed flooring constructed of a webbing material extending between the frame members. The webbing material has an optimal predetermined stretch coefficient at which it retains its resiliency, while resisting sagging. The webbed flooring is sized using the stretch coefficient whereby the dimensions of the webbed flooring when stretched substantially correspond to the dimensions of the area to be floored. The webbed flooring is stretched to the dimensions of the area to be floored and secured to the frame. The floor is stretched to the dimensions of the area to be floored by positioning a bar through loops on each side of the weaved flooring, and applying tension to each bar. The webbed flooring is secured to the frame by attaching each bar to the frame using clamps, bands, or other attaching devices. Tension to each bar is applied by operating a screw-actuated clamping member to tighten the bar against the frame.

Abstract: A utility can holder for use with hollow rung ladders. The device includes an annular support member defining a recess into which a can, typically a standard one gallon paint can, or other container can be placed. The can is secured and prevented from falling through the recess by engagement means, such as a shelf surface upon which knobs of the can or a continuous protruding lip will rest. Attached to the annular support member is a rung insert member, comprising a smooth or ribbed tube which can be inserted through the hollow rung in a snug but rotatable fit, allowing the can to self-level by operation of gravity. A locking mechanism comprised of flexible tabs which spring open after the device has been inserted through the rung prevents accidental withdrawal of the device.

Abstract: A combination container and closure provided with matching, engaging lugs or a ring on said closure and said container and an interior ring on said closure fitting within the opening on said container.

Abstract: Multi-lumen catheters are intended for advancement through the accessory channel on endoscope into a body passage into the gastrointestinal system. The catheters have two or more independent lumens extending continuously to ports at the distal tip for injection of a contrast medium simultaneously with a guide wire for ERCP procedures and for passage of accessories such as visualization devices, polypectomy snares, cytology brushes, papillotomes and stone baskets for catheterization, diagnosis and treatment within the biliary tract. Use of balloons for maintaining a catheter in fixed position in the biliary tract and for dilatation is also disclosed. The catheters employed are extrusions of a resin comprised of nylon and PEBA. The catheters may also be extruded from polyurethane. Multi-lumen catheters having a reduced diameter distal tip portion on which a dilatation balloon is located are also disclosed. The reduced diameter distal tip portion may serve as a platform for support of a stent.

Abstract: A cassette having a leader and recordable tape which cleans the various components of the tape path in videocassette recorders by dry scrubbing. Interactive diagnostic and instructional material is recorded on the tape to instruct the operator about the cleaning operation to enable the operator to evaluate progress of the head cleaning operation, and to program the maintenance protocol of head cleaning cycles relative to capstan cleaning cycles.

Abstract: A building construction block includes a body made of a rigid material and having a substantially rectangular-shaped main portion, a wedge-shaped offset portion formed integral with the main portion, a pair of opposite side surfaces, a bottom surface, a top surface, a front surface and a rear surface. The top surface and opposite side surfaces are defined on both the main and offset portions. The rear and bottom surfaces are defined on the main portion. The front surface is defined on the offset portion and extends in a generally inclined direction from the bottom surface to the top surface and away from the rear surface. A first part of the top surface on the main portion receives and supports a first building component over the main portion, while a second part of the top surface on the offset portion receives and supports a second building component over the offset portion.

Abstract: Multi-lumen catheters are intended for advancement through the accessory channel on endoscope into a body passage into the gastrointestinal system. The catheters have two or more independent lumens extending continuously to ports at the distal tip for injection of a contrast medium simultaneously with a guide wire for ERCP procedures and for passage of accessories such as visualization devices, polypectomy snares, cytology brushes, papillotomes and stone baskets for catheterization, diagnosis and treatment within the biliary tract. Use of balloons for maintaining a catheter in fixed position in the biliary tract and for dilatation is also disclosed. The catheters employed are extrusions of a resin comprised of nylon and PEBA. The catheters may also be extruded from polyurethane. Multi-lumen catheters having a reduced diameter distal tip portion on which a dilatation balloon is located are also disclosed. The reduced diameter distal tip portion may serve as a platform for support of a stent.

Abstract: A flange shape which permits a minimum amount of force to be used in causing the closure to engage the container thus enabling a minimum amount of material to be used in the manufacture of the container while maximizing the amount of force necessary to disengage the closure after it has been attached to the top of the container.