Abstract: A fluid condition sensing transducer includes a fluid containment device having a cylindrical side wall including an inner surface in contact with a fluid and an outer surface, a diaphragm integral with the side wall defined by a recessed portion of the side wall and extending between the inner surface and a recessed portion of the outer surface, and an in-situ, non-invasive sensor mounted on the recessed portion of the outer surface for sensing surface conditions of the diaphragm whereby the condition of the fluid in the containment device is sensed.

Abstract: A corrugated fin strip for heat exchanger tubes has interfacing parallelogram shaped fin panels joined by successive parallel crests, all fin panels having the same parallelogram shape selected in accordance with a desired configuration of the heat exchanger. In one embodiment, these parallel crests extend obliquely between the longitudinal edges of a rectilinear metal strip from which the fin strip is formed, and are adapted to be alternatively attached to the flat face of a heat exchanger tube in oblique relation to parallel sides of the tube, thereby defining an air flow direction oblique to the length thereof. In a second embodiment, the successive parallel crests extend perpendicularly to the opposite edges of the rectilinear metal strip, are displaced alternately therefrom by a selected distance, and are adapted to be attached alternately to the opposed flat faces of a pair of longitudinally parallel heat exchanger tubes, thereby displacing one tube transversely from the other.

Abstract: A pressure activated rotary clutch includes a sealed unit including a casing and a cover mounted to and rotatable about a rotating shaft. The unit includes a circumferentially extending outer wall and a circumferentially extending inner wall having an outwardly extending lobe having major and minor dimensions from said shaft and also a fluid passageway having an inlet on one side of said minor dimension and an outlet on the other side of said minor dimension. A flow control valve is disposed in the fluid passageway for controlling fluid flow through the passageway. A flow control valve actuator in communication with the flow control valve operates the flow control valve. A rotor fixed to the rotating shaft includes at least one vane for moving or pumping fluid through the fluid passageway when it is open and the shaft is rotated. The unit rotates independently of the shaft and rotor when the passageway is unrestricted.

Abstract: A photographic camera for taking photographs of a scene having a film speed determining system, an electronically controllable picture taking lens that can be positioned to a plurality of lens focal lengths, a lens selection system for operation by the camera user to select one of the lens focal lengths at which the user wants the picture taking lens to be positioned, and a light sensing system that detects the amount of ambient light illuminating the scene, includes a controller responsive to film speed, available ambient light, and light gathering capacity of the picture taking lens at a selected lens focal length, for determining if the photograph will be underexposed at the selected lens focal length and inhibiting the taking for underexposed photographs.

Abstract: A carbon dioxide absorber is made by separating sludge from exhaust water discharged upon manufacturing fresh mixed concrete or concrete secondary products, then dewatering the separated sludge, and drying and crushing the dewatered sludge into dry fine particles.

Abstract: A miniature telltale module which combines a plurality of telltale functions into one unit and provides reduced cost per function. The module uses a miniature rotary actuator, a series of interconnected images and a single light source. The actuator allows a wide tolerances at the inputs while still precisely selecting the image positions. The actuator has a unique locking device (or brake) which automatically engages when power is removed. This feature allows the control circuitry to select an image with a momentary pulse and then remove the power from the actuator. Power consumption is thereby minimized since no power is required by the device except when changing the image to be displayed.

Abstract: A method and apparatus for guiding a driverless vehicle along a path defined by a guide cable carrying a current in a horizontal road surface includes mounting a first coil, having a major coil axis, at +45 degrees relative to the horizontal on said vehicle, mounting a second coil, having a major coil axis, at -45 degrees relative to the horizontal on said vehicle such that the axes of said first and second coils intersect, sensing both the radial and circular field vectors of the electromagnetic field with each coil, comparing the magnitude of the radial vector with the magnitude of the circular vector for each coil whereby the lateral position of the intersection point of the axes of the coils is determined relative to the guide cable to indicate the lateral displacement of the vehicle relative to said path, and using the displacement information in the vehicle steering system.

Abstract: A utensil for dispensing liquid, such as detergent, from a bag set in the utensil which contains the liquid, and bags for use with the utensil. The bag is comprised of a synthetic resin film and is housed in a container body having an opening at its top end. The top end opening of the container body is closed by a cover member to which is attached a liquid delivery element, such as a pump with a nozzle. A suction tube projects downward from the liquid delivery element. The tube is adapted to sealingly pierce the upper surface of the bag set in the container body for communication with the interior of the bag. That portion of the bag which is pierced by the suction tube is formed of a nylon film, or an unstretched nylon film in particular. Therefore, the tube is not liable to be torn when pierced by the tube, and a hole formed by the piercing comes in close contact with the tube.

Abstract: A snap attaching tool for attaching stud and socket type snap assemblies to an edge or intermediate location of a fabric or other carrier material. Separable base, stabilizer and top elements respectively carrying a seat recess with a convex floor, a guide opening and an assembling punch are normally aligned by a base mounted rectangular spindle. The spindle permits relative vertical adjustment of the elements and is removable to allow for attaching snaps at locations distant from the edge of the material. The oblong shape of the elements with arcuate aligned sides promotes easy holding of the tool end distant from the location for striking with a hammer during use.

Abstract: An environmental control system includes a refrigeration loop including a two-stage variable speed centrifugal compressor having a low pressure compressor in flow communication with a high pressure compressor and having an inlet and an outlet, a condenser having an inlet connected with the compressor outlet and an outlet, an evaporator having an inlet connected with the condenser outlet and an outlet connected with the compressor inlet and an expansion valve connected between the condenser outlet and the evaporator inlet, and a selectively operative bypass valve in flow communication with the low pressure compressor discharge and the compressor inlet for partially recirculating a portion of the low pressure compressor discharge back to the compressor inlet to regulate compressor flow balance.

Abstract: A fluidization cloth for an ash silo is resistant to high temperatures and mechanical stress, and is formed of a double-sided knit made from aramid or spun glass-fibers, wherein aramid or spun glass-fibers are also used as in-lay threads and the cloth is mounted on a conically-shaped perforated surface that defines it part a foot section of the silo through which compressed air is communicated whereby the cloth permits air to pass through it and mix with the granular, powder-like substance referred to as ash in order to fluidize the ash during discharge of the ash from the silo.

Abstract: A method for making a brush element for a brush roller wherein bristle bunches formed by folding bristles over bent portions of U-shaped staples have their folded portions and associated staples inserted through tight fitting apertures in a base portion of a frame so that legs of the staples are bent by collision with a facing side of an attachment section of the frame. A hardenable adhesive is then poured into the frame between the base portion and the facing side around the staples and folded portions of the bristle bunches. The adhesive is hardened, bonding the staples in the adhesive and affixing the bristles to the base portion. The adhesive may be a polyurethane-base resin having viscosity allowing absorption of the adhesive between the bristles near their folded portions, the tight fit of the bristles in the apertures holding them in place during pouring and hardening of the adhesive.

Abstract: An improved motor driven centrifugal refrigerant compressor is disclosed having a housing enclosing a motor, control electronics and moving parts of the compressor, and a fluid pathway for circulating a mixture of low pressure refrigerant and a lubricant around the pathway, the pathway including a lubricant concentrator for coalescing the lubricant of the mixture to lubricate moving parts of the compressor and the pathway also including a convective heat transfer region to cool the motor and control electronics within the housing.

Abstract: A shoe having an outer sole, an upper attached to the outer sole for enclosing the wearer's foot, and an insole. A compressible and expansible elastic insert is accommodated in a cavity between the outer sole and the insole. The elastic insert has a flat body formed of spring material. Projecting out of the plane of the body is a spiraling, tapering leaf which elastically deflects in response to relative movements of the outer sole and the insole toward and away from one another.

Abstract: A method is disclosed of shaping and a series of shaping implements for slalom boots, in which the slalom boot consists of a hard plastic outer shell and an inner boot manufactured from a flexible material. In accordance with the invention the boot is shaped to a perfect fit for the user as follows: a boot of the correct length is selected in accordance with the user's foot; the individual forms of the foot protruding from the boot are recorded; a point in the outer shell corresponding to each protrusion is shaped as follows: the point to be shaped is heated locally from the outside by hot-air blowing; the heated point is pressed from inside by means of a wooden piece, when the plastic material stretches and a protrusion arises.

Abstract: An apparatus for cooking French fries from a frozen pre-cooked condition that includes a bin (2) from which the frozen French fries may be delivered in a predetermined quantity to a first basket (11) via a balance (8). Bin (2) and balance (8) are placed in an enclosure (1) where a freezing temperature prevails. A cold airflow is kept in said enclosure and is circulated over evaporator (16) of cooling device placed in this enclosure to dry the air and therefore avoid clustering of the French fries due to frosting.

Abstract: The object of the invention is a stack measurement method and equipment to measure especially the timber volume and other dimensions, in which method the external dimensions of the stack, and the average diameter and length of the logs are measured, from which the timber volume is calculated. The method includes the following stages: a beam of light is set transversely around the stack; the beam of light is photographed at an angle from both in front and behind, from both sides and from on top of the stack; the location of the beam is measured from the video image; the curves depicting the surface of the logs are recognized and differentiated from the image of the line; the diameter of the outer logs at the point of measurement is calculated from the curves; measurement is carried out at regular intervals over the entire length of the stack, when the lengths of the outer logs are obtained; the dimensions of the outermost logs are calculated, and with their aid the average diameter and length.