Abstract: Air filtering apparatus with electric controls for varying the speed of filtering as a function of the contamination within the air being filtered. Pressure sensing devices are provided at the input and output ends of the filtering apparatus. The sensing devices are coupled with the electrical controls to either speed up or to slow down the filter cleaning mechanisms when appropriate.

Abstract: Inflatable collars (32,34) are positioned on each side of a downed aircraft (10) and the collars (32,34) are connected by belly bands (80,100) to support the ends (18,20) of the aircraft (10). The bands (80,100) are positioned by positioning straps (90,90') which are attached to the aircraft (10) prior to inflation. The collars (32,34) are also attached to the aircraft (10) at intermediate locations (24,26). The collars (32,34) are divided into separate chambers (44,48,52,54,56,44',48',52',54',56') so that after inflation the different chambers of the collars (32,34) support the different parts (18,20,22) of the aircraft (10).

Abstract: An adhesive activated (AA) polyester cord, aramid cord, and fabrics made therefrom, may be coated in a one-step dip comprising an aqueous dispersion of a solid finely divided reversibly blocked polyisocyanate (RBP), an adhesive latex of a diene polymer, and a dispersion of an acrylic resin selected from the group consisting of a homopolymer of a monomer, or a copolymer of two or more monomers having the structure ##STR1## wherein, R represents H, methyl, ethyl, Cl or CN, and, X represents hydroxyl (OH), hydroxymethylamino (NHCH.sub.2 OH), or alkoxy (O-alkyl) having from 1 to 4 carbon atoms. Automobile tires made from fabric coated with the one-step combination R/F/L, acrylic resin and RBP dip have comparable of better properties, as evidenced by test results of tires tested to destruction, than those of tires made with fabric treated with a two-step bath, the first bath containing the RBP and the second bath containing the R/F/L and acrylic resin.

Abstract: To "set" the relative angular disposition of cords in plural inextensible belts on an inflated green tire carcass before it is cured in a mold, a roller is provided which momentarily presses a belt upon the carcass, thus "printing" the belt thereon at a fixed distance from the longitudinal axis of the carcass, and thereafter releases the belt. The carcass is inflated into a toroidal shape so that a point on the circumference of the carcass is at a predetermined inflated distance from the longitudinal axis of the carcass. The roller is placed on each belt to be "set" so that the roller contacts each belt prior to printing it on the carcass. The roller biases each belt on the carcass toward its (the carcass') longitudinal axis, and it is essential that the distance between the bottom surface of the roller and the longitudinal axis of the inflated carcass is maintained constant while each belt is in contact with the roller.

Abstract: A packboard assembly (10) has a shell (12) in which the escape slide is packed and held in place by releasably fastened covers (28,29). The shell (12) is mounted on a door (44) and supported by latches (52) having latch pins (62) which when removed cause the assembly (10) to drop. The latch pins (62) are removed in response to opening of the door (44) after the escape slide system is actuated by an operator. Then after the packboard assembly (10) is dropped a predetermined distance a packing release lanyard (68) is tensioned to release the covers (28,29) and permit the shell (12) to fall away from the slide. A firing lanyard (78) then actuates the inflation of the slide.

Abstract: An inflatable slide device for emergency evacuation from structures such as aircraft, offshore drilling platforms, etc. The slide device comprises two assemblies of tubular members defining two mutually independent inflatable chambers. One chamber includes tubular members supportive of the slide panel of the device and certain side rail tubular members as well as another tubular member functioning as the central slide support. The other chamber also includes tubular members supportive of the slide panel of the device and certain other side rail tubular members as well as another tubular member also functioning as an additional central slide support.

Abstract: When feed stock is pulled from storage and a portion cut off for use by an operator, such as a builder of tires, the remaining portion of feed stock not used by the operator for the tire he is building ("unused stock"), interferes with the tire building process. Therefore, the tire builder must take the time, and make the additional effort to move the unused stock out of his way, usually by pulling the end of the unused stock into a retaining clip on the tray of the `servicer` which presents appropriate stocks to the tire builder. To avoid the inconvenience to the tire builder who must move the unused stock out of his way, and to save the time required for him to do so, a spring actuated cam roller is used to release the feed stock to the tire building machine when the operator pulls on the stock. After the operator cuts off a predetermined portion, a controlled reverse rotation of the cam is automatically spring actuated so as to retract the end of the unused stock and keep it out of the operator's way.

Abstract: A device (10) for isolating from vibrational and impulse loads a power transfer unit (14) that transfers power from a helicopter electrical system to a plurality of deicing segments on the rotor blades includes a distributor (13) rotating with the rotor blades for distributing power from the power transfer unit (14) to the deicing segments, a housing (11) having an upper cylinder (24) and lower cylinder (23) the latter of which is flexibly secured to the helicopter as by a joint including ball (40), housing 11 substantially isolating the power transfer unit (14) from such loads, and a shaft (12) rotatably engaging the upper cylinder (24) for carrying the distributor (13) in rotation with the rotor blades.

Abstract: A sleeve for frictionally coupling a ceramic disk to a cylindrical shaft. The sleeve is constructed of a rigid plastic, preferably ABS with a void content to permit compression when mounting between the shaft and disk. The void content is between 25% and 50%, preferably between 40% and 50%.

Abstract: A device is disclosed in which an edge-sensing means ("sensor") and a work-performing assembly are combined to perform work on a belt, strip or other work (hereafter "material"). It may be desired to slit the material, or simply position it with respect to a reference mark, but whichever the work-performing function to be discharged, it is required to do so with accuracy relative to one or both edges of the material. The sensor comprises a silicon solar cell ("cell") and a light source ("lamp") between which an edge of the material is sensed, and the deviation from a reference position measured. Depending upon the area of the cell exposed to light from the lamp due to the variable placement of an edge of the material as it traverses the cell, an electrical current is generated in the cell which current is directly proportional to the area of the cell upon which the light falls.

Abstract: An apparatus and process are provided for delivering the precise optimum number of cure equivalents to the exact point of least cure for each tire, though the location of the point varies from one tire to another tire of different geometry, and may vary in tires of the same geometry if there is a change in normal operating conditions. A cure is effected with the aid of a small computer means utilizing only two boundary temperature conditions and the ambient temperature, irrespective of where the boundary conditions are sensed.

Abstract: To "set" the relative angular disposition of cords in plural inextensible belts on an inflated green tire carcass before it is cured in a mold, a roller is provided which momentarily presses a belt upon the carcass, thus "printing" the belt thereon at a fixed distance from the longitudinal axis of the carcass, and thereafter releases the belt. The carcass is inflated into a toroidal shape so that a point on the circumference of the carcass is at a predetermined inflated distance from the longitudinal axis of the carcass. The roller is placed on each belt to be "set" so that the roller contacts each belt prior to printing it on the carcass. The roller biases each belt on the carcass toward its (the carcass') longitudinal axis, and it is essential that the distance between the bottom surface of the roller and the longitudinal axis of the inflated carcass is maintained constant while each belt is in contact with the roller.

Abstract: Apparatus to remove dust, fibers, lint or other undesirable particles from air. Air ladened with dust, lint or other undesirable matter is drawn into a filtering housing to contact the surface of a rotatable screen-covered drum. The air passes through the drum while the particles remain on the drum surface. The air passes from a higher pressure area exterior of the drum into a lower pressure area within the center of the drum and is conveyed away. The particles are retained on the exterior surface of the drum which is covered by the fine mesh screen. The particles, which form a bat, are then separated from the rotating drum surface by being moved into contact with a smooth compressor roll cooperating with a flighted doffing to lift away the bat from the drum and drop it to a collection zone. Fixed rubber seals are located to contact the rotating edges of the drum.

Abstract: A system is disclosed for detecting potential defects as evidenced by surface irregularities in the sidewalls of a tire to be tested. A test is performed on a "uniformity machine" programmed to run standard tire tests. The system preferably utilizes a pair of oppositely disposed non-contact probes, means for distinguishing between `noise` and a desired signal, means for analyzing and identifying the signal, means for determining whether the identified signal falls within a preselected range, and means for identifying a tire having acceptable or unacceptable bumps and/or depressions. A tire is deemed acceptable when it qualifies within preselected limits for bumps and/or depressions, and unacceptable if it does not so qualify.

Abstract: An electrically conductive fabric particularly adapted for use as a controlling antenna in a conveyor belt. The fabric includes filler and warp yarns of an electrically insulating material suffused with electrically conducting carbon particles, the warp and filler being woven in an open mesh configuration. The open mesh configuration is secured by a leno weave and a vulcanized elastomeric material surrounds the yarns.

Abstract: A pneumatic tire having a carcass portion and a readily replaceable tread portion. The tread portion is provided with a zero ply steer belting and built-up edges. The carcass is of an elliptical cross-section. The interface between the carcass and tread is of a high radius of curvature, all of which when taken together, provides for an effective combination and practical replaceable tread tire.

Abstract: A life raft having an attached container of carbon dioxide for automatic inflation and with a separable strap temporarily constraining the raft at a central portion whereby inflation will occur in a sequence to properly position the floating raft, before the inflation pressure separates the strap, to ensure deployment in a self-righted orientation.

Abstract: A conveyor belt supportable on troughing rollers for conveying bulk material. The belt is capable of sharp lateral curves and includes a main body section with an embedded, central, inextensible, flexible spine formed of cables. Corrugations extend outwardly to the edges from the central section of the body. The central section of the body is rectangular in cross section and constitutes the majority of the belt. The belt is molded flat and has layers of cords or strands, of inextensible material such as wire, embedded therein from edge to edge. The layers are parallel to each other and to the surfaces of the belt adjacent the edges and adjacent the central portion of the body. Along the lines where the corrugations meet the central portion, the layers are positioned closer to each other to thereby define hinges for bending of the belt longitudinally to thereby permit troughing of the belt during the conveying of bulk material.

Abstract: Improved method and apparatus for winding tread stock onto a tire by stretching the relatively thin strip of vulcanizable strip as it is being applied to a rotating tire wherein the windings of the strip overlap each other in a stretched condition to provide a uniform contour at any cross section of the tire eliminating air pockets and enhances bonding of the adjacent and overlying stock.

Abstract: A vacuum cleaner head especially useful for removing loose and partially embedded gravel and similar particulates from roofs and other surfaces, having a nozzle supported slightly out of contact with the surface being cleaned, by a peripheral glide shoe, shielded jets for introducing high velocity fluid into the nozzle, adjustable vents for introducing ambient air into the nozzle, and adjustments for the nozzle height and jet direction and height.