Abstract: An exercising device comprising a frame, actuating means, and a double acting hydraulic cylinder used therewith. The hydraulic cylinder includes a container having first and second chambers and passageways for placing the chambers in fluid communication with one another. A piston is slideably mounted within the first chamber and valve means are mounted with the container for preventing fluid communication into the first chamber when the piston is moved in a first direction and for preventing fluid communication around the piston when the piston is moved in a second direction. A piston rod extends into the container for moving the piston in response to movement of the actuating means. A control means governs the fluid flow through a selected passageway from the first to the second chamber to regulate the amount of force necessary to move the actuating means during exercise of a portion of the body.

Abstract: Apparatus for transferring a floor marking to a location on an overhead in direct true vertical relationship to the floor marking comprising a laser device generating a pair of beams directionally separated 180 degrees, gimbal mounted to swing free within a wind shielding housing, the housing having collapsible tripod legs with caging arms on each leg extending into the housing to engage and hold said laser in a centralized position when said legs are collapsed for transport of said apparatus.

Abstract: An apparatus for applying silicone polymer coating to a web substrate comprising: a roll having a resilient surface; means to rotate the roll; a metering member comprising a hard, generally flat, elongated metallic strip having first and second polished edges with a relieved area therebetween to prevent engagement of the metering member with a metered film of liquid on the resilient roll surface except by the portion of the metering member lying between the first and second polished edges; means to urge the metering member into pressure indented relation with the resilient surface; and heat exchanger means adjacent the metering member to code the metering member adjacent the metering edge.

Abstract: A leg exercising device having a general frame having an L-shaped seat for supporting the body and a pair of leg gripping frames pivotally secured to the general frame such that the axis of rotation of the leg gripping frames are aligned with the pivot point of the knee of the user. The leg gripping frames have resilient pads which allow the leg to pass therethrough such that the leg is padded from the frame as it moves in both directions. A power cylinder is pivotally secured between the general frame and each of the leg gripping frames about the axis of rotation in both directions. Each of the leg gripping frames may be moved independently of each other.

Abstract: An optical device for an intensifier tube having an elongated housing with a cylindrical chamber extending therethrough, an intensifier tube in said chamber, first and second annular means in said chamber. Fastener means in said housing for releasably fixing said first and second annular means in selective axial position in said housing whereby the axial mounting position of the intensifier tube may be varied. Objective and eye piece optical means for projecting light to and receiving light from the intensifier tube.Third and fourth annular means in said housing. The third annular means positioned in said chamber at one end of said housing, and the fourth annular means positioned in said chamber at the other end of said housing. The intensifier tube and said first and second annular means are positioned between said third and fourth annular means. Connector means on each of said third and fourth annular means for connecting to said objective and eye piece optical means.

Abstract: A rubber composition for use in annular packer elements for blowout preventers is provided which comprises from about 45 to about 55 weight percent of an acrylonitrile-butadiene copolymer; from about 10 to about 15 weight percent of a first admixture further comprising a major amount of colloidal silica and minor effective amounts of coupling agent, curative, lubricant, dispersant, activator and antiscorching agent; from about 30 to about 40 weight percent of a second admixture further comprising a major amount of carbon black and minor effective amounts of a plasticizer, antioxidant and antiozonant; and minor effective amounts of tetraethyl thiuram disulfide and benzothiazyl disulfide.

Abstract: Method and apparatus for introducing fluid into a wellbore through use of a multi-channel conduit.

Abstract: An improved monocoque parabolic solar collector which can be machine welded or fastened with rivets, bolts or other mechanical fasteners without the need for any blind fastening systems.

Abstract: A force measurement device including one or more beams (21) to which tension strain gages (101 and 104) and compression strain gages (102 and 103) are secured. The strain gages are connected in a Wheatstone bridge circuit (FIG. 3) to deliver an output signal related to the magnitude of force supported by the beams. Each of the beams (21) has rigid flange portions (22 and 23) to permit welding (37) ends of the beams to supports (38) and load receiving members (40) at points far removed from the neutral axis (x--x) of each beam to minimize influence of welding on beam deflection.

Abstract: Reinforced polymer compositions comprising a minor effective amount of a particulate metal reinforcing agent are provided. A preferred particulate metal reinforcing agent preferably comprises a plurality of discrete particles, each further comprising nickel, chromium and titanium carbide. Polymer compositions adapted to undergo a color change when subjected to a particular thermal history for a particular time interval are also provided.

Abstract: A gate assembly is adapted to be used with a vehicle which has a cargo area defined by at least two sides extending substantially parallel to one another and comprises a gate member adapted to be moveably disposed within the cargo area of the vehicle and having a body with first and second sides. Guiding apparatus is adapted to be connected to the vehicle to restrict movement of the gate member between an open position to allow access into the cargo area and a closed position to limit access into the cargo area. Follower apparatus is adapted to be connected to the gate member to cooperate with the guiding apparatus by restricting movement of the first end of the gate member along a direction line substantially parallel to the sides of the vehicle and for restricting movement of the second end of the gate member along a direction line substantially transverse to the parallel sides of the vehicle when the gate member is being moved between the open and closed position.

Abstract: A controller comprises a body having a first port, a second port and a third port. A valve element is disposed in the body for movement between a first position which blocks fluid flow through the first port while permitting fluid communication between the second and third ports and a second position to permit fluid communication between the first and second ports while blocking fluid flow through the third port. A device is disposed in the body for urging the valve element to the second position. A mechanism is connected to the body for moving the valve element to the second position and this moving apparatus includes a member which when heated permits the urging device to move the valve member to the first position. Indicator means are provided to indicate position of the valve element. Safety means is provided to avoid accidental movement of the valve element to the second position during manual operation.

Abstract: A method and apparatus to control delivery of pressurized hydraulic fluid at a controlled pressure to open and close blowout preventers. A source of pressurized hydraulic fluid is connected through a pair of supply lines and through a control shifter valve for charging a closed system to a set-point pressure. A velocity fuse in each supply line diverts flow to one line if the other line breaks. Fluid from the source of pressurized hydraulic fluid is also delivered through a regulator valve to a regulated pressure line which is connected to one or more control valves. Each of the control valves is adapted to direct pressurized fluid selectively to either end of a blowout preventer actuator chamber.

Abstract: A drive system for rollers in pressure indented relation including a lug on a drive gear, which is rotatably mounted about one of the roller journals, and a projection on the roller journal such that the gear will drive the roller only when the lug and the projection are in engagement. The system provides a drive for driving rollers at different surface speeds, the drive being adapted to permit rotation of the rollers at equal surface speeds until lubricant is transferred to the nip between the rollers and thereafter at different surface speeds.

Abstract: Directed jets of temperature controlled gaseous fluids are applied to irregularly shaped products, such as food portions, to subject discrete areas of the surface to a very high heat transfer rate and to cause these areas to be passed over surfaces of the product at a proper rate to obtain over-all surface effects such as crisping, browning, searing or freezing.The cooking apparatus comprises a generator adapted to supply microwave energy for heating the interior of a food product in combination with apparatus to direct spaced discrete high velocity jets of heated air to impinge against exterior surfaces of the food product. A conveyor is employed to provide relative motion between each of the sources of heat and the product for averaging cooking through the product by reducing effect of RF standing waves and simultaneously sweeping the jets of air over the product at proper rate to heat all exposed surfaces.