Abstract: A power drive unit for operation of structure in opposite directions, such as aircraft structure and, particularly, thrust reverser structure of an aircraft engine operable between stow and deploy positions, including, a bi-directional hydraulic motor having a variably positionable wobbler for controlling displacement of the motor. Control structure includes a valve for causing fluid flow through the motor in either of two directions, a control cylinder and piston connected to the wobbler for setting the motor at either minimum or maximum displacement conditions. In one embodiment, there is an intermediate displacement position. The displacement condition is established by valve structure responsive to the particular cycle of operation.

Abstract: A retainer for preventing relative rotation of a lock nut threaded on a shaft to preload an adjacent bearing assembly includes a serrated bore for engaging a splined shaft portion extending through a bore and axially-extending projections for engaging notches or the like formed in the lock nut. A device, such as a sprocket wheel, mounted outward of the retainer maintains the retainer in axial engagement with the lock nut. The retainer can be deformed during assembly to facilitate proper alignment of the lock nut on the shaft. The retainer is advantageously employed to maintain preloads on tapered roller bearings utilized to support the final drive shafts in heavy earthmoving equipment.

Abstract: A rock-crushing apparatus is provided with a stationary annular member in which a rock-crushing mechanism is supported. The rock-crushing mechanism has at least two pivoted rock-crushing shanks which are successively impacted by an eccentrically mounted member. The eccentrically mounted member is rotatably driven by a motor and flywheel assembly. The shanks may be biased outwardly so as to trap rocks between the shanks and the stationary member whereupon the successive impacts from the eccentrically mounted member progressively crushes said rocks.

Abstract: An improved track assembly adapted for use with crawler-type vehicles of the type including a joint having a shaft, an element journalled on the shaft, a lubricant port opening to one end of the shaft and in fluid communication with the interface of the shaft and the element, and a removable plug received in the port for confining lubricant therein. The invention contemplates the improvement wherein the plug is an elastomeric sleeve having a frusto-conical outer surface and a rod of translucent material received within and sealed against the sleeve. The presence or absence of lubricant within the port is ascertained by optical inspection of the end of the rod exterior of the port without removing the plug from the port.

Abstract: A snap-on handle structure including a handle mountable on a splined operating shaft having a series of teeth, said handle having an internal recess to receive the shaft and having spaced, splined sections in said recess to interfit with the splined operating shaft, and a pair of members extending interiorly along the length of the recess and interfitted with the handle at locations between the splined sections, with each member having a pair of spaced-apart, inwardly-turned elongate flanges to fit between splined teeth on said operating shaft.

Abstract: A beverage brewer housing structure cooperatively defined by a water heating tank, a portion of a basin overlying the heating tank for receiving poured-in cold water and delivering the water to the heating tank, and a cover overlying the basin. A pour-in drawer may be provided in the cover to be selectively disposable in a retracted disposition within the cover and a pour-in position wherein at least a portion of the drawer is exposed. The cover may be removably secured in the housing structure and in the illustrated embodiment, is secured to the tank.

Abstract: PCT No. PCT/US79/00090 Sec. 371 Date Feb. 15, 1979 Sec. 102(e) Date Feb. 15, 1979, PCT Filed Feb. 15, 1979, Ser. No. 30,244. A router bit assembly for an earth working apparatus (10, 12) including earth working means having a generally horizontally elongated blade (18) with a generally vertically extending side member (22) at at least one end of the blade, a relatively tall router bit (32) formed of plate metal extending along the side member and in proximity to the blade, a relatively short support (34) for the router bit interposed between the router bit and the side member and having a first lip (36) overlying and substantially abutting the upper extremity (38) of the router bit and a second lip (40) underlying the lower extremity (30) of the side member, and removable bolts (50) securing the router bit and the support to the side member.

Abstract: An improved adjustable control console for a vehicle or the like of the type including a base (16) for attachment to a vehicle (12), a head (18), rigid mounting links (30,38) pivotally interconnecting the base and the head in a manner like that of a parallelogram linkage (16,18,28,33,34,38,40,42) to allow fore and aft movement of the console, at least one control element (22) movably mounted on the console, a rigid control link (50) connected to the control element and extending therefrom towards the base and including the improvement wherein the links are selectively simultaneously extensible to allow adjustment of the spacing between the head and the base.

Abstract: An overlay tray for holding a plurality of photographic slides in side-by-side relationship is integrally formed from transparent plastic and defines a series of parallel, longitudinal channels. Each channel has a longitudinal groove adjacent one channel wall so that pressure applied to the edge of the slide above the groove pivots the opposite edge of the slide outward from the channel. The walls of the overlay tray are constructed so that the trays may be stacked one upon the other in interfitting relationship with the bottom of one tray retaining the slides in fixed position within the tray below. A flange extends from one end of the overlay tray so that an identifying label placed thereon can be read through a stack of such trays.

Abstract: An illuminated transparency viewing device is supported by a leg construction which may be adjusted to orient the viewer at different angles relative to a supporting surface. Two pairs of spaced apart legs are provided, each leg being pivotally mounted to the viewer housing for movement between retracted and extended positions so that either pair may be retracted or extended to tilt the viewer on edge. Each pair of legs may be of different length than that of the other pair. One leg of each pair is colinearly arranged with a corresponding leg of the other pair to define a pair of leg assemblies. Each leg assembly therefore has a pair of legs, each being mounted for pivotal movement between the side walls of a U-shaped bracket secured to the bottom of the viewer housing and may be extended from or retracted into the bracket.

Abstract: An engine structure (12) wherein a fuel injector nozzle (11) is retained in accurate preselected association with the cylinder head (16) by an improved clamp (20). The clamp is associated with a force-applying device (24) and the nozzle head (13) so as to provide an accurate transfer of force from the force-applying device (24) to the nozzle parallel to the longitudinal axis (20) of the nozzle and in a manner accurately positioning the nozzle about its longitudinal axis. The clamp is associated with the force-applying device and the nozzle head so as to have non-surface engagement between the force transfer portions (21,28, 31,19, and 34,35) and in the illustrated form, utilizes line contact force transfers therebetween. The line contacts are preselected so as to be parallel to each other in providing the desirable accurate force transfer.

Abstract: A hydraulic system including a hydraulic motor having a port adapted to be connected to a reservoir and a hydraulic fluid pump. A normally closed check valve connects the port to the reservoir and includes two, hydraulically opposed, differential surfaces, one being smaller than the other and being disposed to be responsive to pressure at the port. Included is a normally closed, pilot-operated, first metering valve having an inlet and an outlet and a second metering valve also having an inlet and an outlet along with a shiftable metering element interposed therebetween. A spring biases the element towards a position minimizing flow between the inlet and the outlet and a pressure responsive surface is disposed on the element in bucking relation to the spring. The first valve inlet is connected to the second valve outlet and to a larger surface of the check valve and the port is connected to the second valve inlet as well as connected to direct pressure to the second valve pressure responsive surface.

Abstract: A reciprocating engine including a block having at least one cylinder therein, a piston reciprocally received in the cylinder and having a crown, a depending skirt and a ring-receiving groove on the skirt near the crown. The piston has a central cavity terminating near the crown and a coolant-receiving passage in heat exchange relationship to the groove. A nozzle is stationarily mounted on the engine and has first and second jets, the first jet directing coolant to the cavity and the second jet directing coolant to the coolant-receiving passage, both for all operating positions of the piston within the cylinder. A filtered oil supply for the nozzle is provided.

Abstract: A control system for a work-performing vehicle such as a lift truck, front end loader, or the like, including a source of motive power for driving the vehicle, performing work, or the like, and of the type including a sensor having an electrical output providing an electrical output signal having a characteristic whose magnitude varies according to load distribution on the vehicle. A level detector receives the output signal and provides a further signal, in response thereto, indicative of an unstable load distribution on the vehicle and there is a circuit connected to the output of the level detector responsive to the signal therefrom for disabling the motive power source when the load distribution on the vehicle is unstable to prevent an intensification of the unstable condition.

Abstract: An electronic lock system including a key coder, a key or set of keys and a lock or set of locks. The key coder provides an operator-selectable key code having a new code portion and current code portion to each key. The key receives the selected key code from the key coder and retains it for use with the lock or set of locks, one at a time. When the lock receives the key code from the key, a comparison is made in the lock between the current code portion of the key code and a lock code contained within a memory in the lock. If the current code portion of the key code compares the lock code, the lock is actuated and the lock code in the memory is replaced by the new code portion of the key code. If the new code portion of the key code is identical to the current code portion of the key code, the key will actuate the lock and will continue to do so until the lock is once actuated by a key having a different new code portion of the key code.

Abstract: A system for measuring the displacement of a workpiece from a reference coordinate system. Position information with respect to the various axes of the coordinate system is acquired by rotary resolver assemblies that measure the angular position of rotatable elements. Each resolver assembly includes a coarse and a fine resolver. Signals representative of the SIN and COS of the angles of the coarse and fine resolvers for each rotor assembly (or referred to as a channel) are applied to a multiplexer. The multiplexer sequentially selects the appropriate channel and the signals are then converted into angular information for each channel. An accurate count of the number of revolutions of the rotatable elements is then obtained. Offset error correction may be provided for each channel. The number of counted revolutions, corrected for offset error, may be multiplied by a scaler for conversion into a linear displacement.

Abstract: A polymerization catalyst and method which produces substantially pure silica that is uncontaminated with alkali metal or alkaline earth metal ions before associating with the resulting support silica the chromium compound which is either a chromium oxide or a chromium compound convertible to the oxide in the heat activating of the catalyst. In general, the catalyst is prepared by hydrolyzing an organosilicate ester to form suspended silica with the hydrolyzing being catalyzed with an aqueous acid solution containing mixed solvents. Next the resulting liquid is neutralized with an alkali free basic solution such as ammonium hydroxide at controlled low temperature. Then sufficient water is added to permit stirring the resulting gel and this is stirred and heated forming a suspended silica. The silica is then separated and dried, associated with the chromium compound and the mixture then heat activated in the presence of oxygen.

Abstract: A lubricating system for use in a rotative drive assembly including a clutch pack and a brake pack. The system is arranged to utilize a movement of the piston actuator of the clutch and/or brake pack for controlling delivery of the lubricating oil thereto. The system may be arranged to provide a minimum delivery of lubricating oil to the clutch pack and/or brake pack at all times.

Abstract: A convertible furniture article which may be selectively utilized for a number of different purposes, including serving as a cradle or a bench. In the cradle configuration, the article defines an upwardly opening receptacle which may be utilized for a large number of different purposes, not only as a cradle, but illustratively as a toy box, storage box, magazine rack, knitting or sewing box, pet box, wood box, etc. In the reverse arrangement, the article may function not only as a bench, but as a stool, a child's table, a lap table, etc. The article may be provided with integral handles for facilitated carrying and manipulation. The article may be arranged to provide a rocking action in one disposition thereof. The article may be arranged selectively to provide a stabilized support in one or more different dispositions thereof. Stops may be provided for limiting the movement of the article in the rocking action.

Abstract: A measuring and gauging instrument has a column secured to a base, a carrier adjustably movable along the column to a selected position and releasably mounting a selected anvil thereon, and a dial indicator mounted on a support adjustably movable to a selected position relative to the column. The dial indicator provides a relative measurement of a workpiece supported by the anvil and engaged by the dial indicator and, depending on the particular configuration of the anvil employed, gives an indication of workpiece diameters, groove depths, bore and slot locations, or the like.