Abstract: A bench top printed circuit board scrubber apparatus is disclosed having a roller conveyor for transporting varying thickness circuit boards through a scrubbing and drying compartment. The apparatus includes a pivotal top plate which mounts a scrubber brush and its respective motor drive such that the brushing assembly may be extended away from the roller conveyor as a unit to facilitate easy access to the internal components. Additionally, the apparatus provides a quick change mounting means for the roller conveyor, and a compact axial flow air drying system which effectively dissipates water applied to the circuit board during the scrubbing operation.

Abstract: The present invention relates to a road sweeping broom constituted by a handle and a bundle of fibres fixed at one of its ends; according to the invention, the fibres of the bundle are constituted partly by synthetic fibres and partly by vegetable fibres. These fibres are bound together at one of the ends of the bundle and at least in one other zone distinct from said end. The invention finds particular application in the domain of highway equipment.

Abstract: A cover protected brush with collapsible bristles, more specifically a collapsible brush for ladies, characterized in that the bristles of the brush can be collapsed and protected with a cover so as to reduce its volume and make it easier for a lady to carry in her handbag. The mirror affixed to the cover makes the brush serve also as a handle mirror.

Abstract: A car wash in which sponge rollers are used and are yieldingly held against the top and two sides of the vehicle and are positioned in the car wash after the vehicle has been washed. The sponge rollers are compressed against the top and sides of the vehicle and will absorb the water film remaining on the vehicle. A vacuum shoe contacts each sponge roller and vacuum is used for removing any fluid in the sponge roller as the cylindrical surface of the roller moves under the shoe. The fluid withdrawn from the roller is conveyed to the sewer.

Abstract: A new and improved home-commercial floor covering vacuum cleaning and liquid cleaning apparatus employing a rotating beater disposed within a vacuum-liquid cleaning chamber. The beater vibrates the floor covering by striking the flooring surface to agitate the dirt which is then moved by a vacuum system into a removable collecting chamber. When the dirt laden air enters the liquid collecting chamber of the apparatus, the dirt impinges on the surface of the collecting liquid and is thereby deposited in the liquid while the dirt-free air is again moved through the blower. The blower exit provides a stream of air into the vacuum-liquid cleaning chamber to pick up additional dirt. A quantity of foam-type cleaning solution is available from a container for periodical release into the stream of air exiting the blower to provide foam on the floor surface adjacent the beater. The foam is picked up by the vacuum system adjacent the rotating beaters to remove surface soil and stains.

Abstract: The caster wheel includes a swivel housing connected to a transportation apparatus such as a shopping cart and supporting a transverse shaft and a downwardly directed braking bracket terminated with a transverse braking shoe. Two separate wheel discs are respectively supported for rotation on the shaft and are slidably interconnected along their periphery by snap-in annular grooves and tongues. Each wheel disc is provided with a radially directed guiding ring which is adapted for engaging a guiding groove on a conveyor belt.

Abstract: This invention relates to fish skinning machines wherein fish are delivered tail-first to the nip between a feed roll and the pinch roll which pulls the fish downwardly toward the cutting edge of a cutter for separating the skin from the flesh and especially to improvements in the delivery of the fish to the nip between the feed roll and the pinch roll, positioning and operation of the cutter, adjustment of the cutter with respect to the feed roll, clearing the ends of the cutter, gasketing the reciprocating cutter shaft to prevent loss of oil and ingress of water and attachment of the feed conveyor as a separable unit to facilitate repair and adjustment.

Abstract: A hook-like tool for opening and closing the clamps on ski boots, overshoes and the like, providing leverage which is not otherwise obtainable when using the fingers. The device includes a handle member and an elongated member, the principal axis of which extends at a substantial angle relative to that of the handle member and is of a length corresponding to that of an engaged clasp.

Abstract: A method of fixing trim on an object to be bake-painted and a device for carrying out said method are disclosed. The device for fixing trim on the object to be bake-painted has a depression from therein and the depression is filled with a thermosetting synthetic adhesive. A strong bond between said trim-fixing device and an object is obtained by temporarily attaching the device with a suitable means to the object at a prescribed position and heat-treating the painted object with the device temporarily attached and thereby, curing the paint and the adhesive and at the same time, bonding the trim-fixing device fast to the object by the adhesive.

Abstract: Cord guide, such as a pulley, and support therefor, for use with a liftable shade, as a Roman shade or a venetian blind. There is provided a pivotally suspended cord guide support for use with a liftable shade which will suspend the cord guide in a pivotal manner so that the pull cords may be held for operation at a substantial angle with respect to the wall without diminishing their effectiveness in operating the shade. Specifically, the cord guide is supported within a generally conventional clevislike structure which has a specially constructed head end adapted for pivotal support on and by a ceiling or wall attachable bracket. With such pivotal support, the clevis and the cord guide carried thereby, while normally hanging parallel with the wall, can be angled away therefrom to permit greater ease in pulling of the shade cords but without diminishing the accuracy or effectiveness of said cords in the operating of the shade. A lock and guides for the shade cords may also be provided if desired.

Abstract: A woven slide fastener stringer includes spaced coupling elements molded on spaced parallel connecting threads with reinforcing projections extending from respective leg portions of the coupling elements along upper connecting threads. The reinforcing projections have lower surfaces which are inclined relative to the connecting threads to produce substantially stronger reinforcing projections.

Abstract: A coupling device for coupling together a plurality of plates which includes a push pin which clasps one of the plates and which has a leg formed on its undersurface, a carrier box which is inserted and anchored in a slot formed in another of the plates and which has a slide slot formed in its undersurface and an engaging base which is loosely inserted into the slide slot of the carrier box so that it is free to move in a horizontal plane and which has arms formed on its upper surface that resiliently clasp the leg of the push pin.

Abstract: A fastener including an enlarged head portion and a reduced diameter shank portion extending from one end of the head portion. A cam slot is formed in the end of the shank distal from the head portion. The cam slot has a spiral configuration and the entrance end of the full width of the slot is widened to facilitate coupling and uncoupling of the fastener with a cam follower introduced to the cam slot for forming a fastener assembly.

Abstract: A plastic sheet support clip is provided for use in conjunction with a plastic sheet which performs the function of a protective seal to inhibit the passage of water into the cargo compartment of trucks having a door that is not adequate for water protection. This plastic sheet support clip is formed from a single thin piece of sheet metal. When the metal is stamped the invention is formed comprising a channel form retainer open at the top and a mounting flange having holes to assist in securing the invention to the side walls of the truck. The retainer has a bottom, a front wall and two side walls. A V-shaped notch is formed in the front wall and opening at the upper edge of the front wall. Lower portions of the notch are sharpened and act as a plastic sheet tearer or cutter.

Abstract: A method is disclosed for mating the tubular cap and tubular shank of the cathode assembly used in TV CRT electron guns. The shank has an end larger in diameter than the cap, and a narrow end adapted to fit into the cap. The method comprises causing the cap to fall open-end-down into a first receptacle. The first receptacle is inverted in conjunctive alignment with a second receptacle, causing the cap to fall open-end-up into the second receptacle. The shank is then caused to fall narrow-end-down into the second receptacle and into the cap; the second receptacle is adapted to reject the larger end of the shank. The second receptacle is inverted in conjunctive alignment with the first receptacle, causing the mated cap and shank to fall shank-end-down into the first receptacle where it is held cap-side-up for further processing.

Abstract: An electroded wafer for use in electro-optic devices comprising a ceramic wafer having piezoelectric properties and having faces substantially larger than the thickness of the wafer. On the wafer are a plurality of parallel slots cut in at least one face of said wafer to form an interdigital matrix wherein adjacent slots are cut through the periphery of the wafer at opposite ends. Further included is a metallic electrode plated on the interior of the slots and the periphery of the wafer by electroless plating of at least one metal in contact with a palladium catalyzing compound such that the catalyzing compound is present only on the portions of the wafer to be plated.

Abstract: A process for producing electric stacked capacitors including forming a folded track of capacitor materials which is only a fraction of the thickness of the final capacitor, cutting the folded track into segments equalling the length of the capacitor, stacking the segments on a conveyor belt, hardening the stack, providing external contacts and encasing the capacitor. The process may include placing the folded track on their folded edges and applying pressure between a pair of clamps which have recesses to allow the subsequent forming of the contact regions by a metal spraying process.

Abstract: A biaxially heat shrinkable sleeve, a prism which is usually a roller having its lateral area covered with a biaxially heat shrunken sleeve and the method for covering the lateral area of a prism such as a process roller with a biaxially heat shrunken sleeve.

Abstract: Method for correcting deflection of a plastic roll under conditions of use. A drilled roll for processing thermoplastic material such as vinyl or the like is deflected during the use due to a thermal distortion to cause a thickness fluctuation in the rolled products. To extinguish this deflection, the roll is corrected by a process having the steps of heating the roll up to the operating temperature, measuring the amount and direction of the deflection of the heated roll, cooling the roll to the room temperature, mechanically imparting to the roll a deflection of the same amount and direction as those observed in the heated roll, and processing the roll by grinding the roll in the mechanically deflected state. After the processing, the roll exhibits an apparent deflection of the same amount in the opposite direction to those exhibited in the heated state, as it is relieved from the mechanical deflecting force.

Abstract: Machine for pressing hose couplings onto the ends of pressure hoses, radially from the circumference toward the center, comprising a revolving disk in which pressing tools can be detachably fastened, to be used in succession, and a pressing device opposite to which the tools are brought in turn to perform the pressing. Alternatively, a programming or a manual control device can be used with the machine for controlling the pressing operations. The disk may have a locking device and openings for attaching the tools thereto. The pressing device is preferably built with side plates, the tool in use being pressed against one of the plates. The tools preferably consist of two ring-like elements with radial jaws therebetween, possibly with working jaws that have quick-locking devices for fastening.

Abstract: A device for inserting a typed or printed label into a label holder on the upper edge of a file folder including two, thin, flat, elongated, juxtaposed clamping blades and a handle on one end. The blades possess some spring action to normally urge them together and are of unequal lengths to facilitate their insertion into the label holder. The label extends slightly beyond the outer ends of the blades to permit grasping the label and holding it in position during withdrawal of the device.

Abstract: A flue stack maintenance system particularly for those flues through which grease laden air passes such as for example exist in commercial restaurant kitchens and the like (FIG. 1), which utilizes an expandible, elongated metal foil liner bag which forms a closed interior system except for an air inlet conduit provided for the application into the interior of the bag an air pressure greater than the ambient to balloon out the bag into facing engagement with the interior of the flue stack (FIG. 3B). After the bag is ballooned out, the upper and lower ends are opened and folded over and around the ends of the flue for attaching the foil liner to the flue (FIG. 3C).

Abstract: The hot isostatic pressure (HIP) method for densification of a metal casting which includes surface-connected discontinuities over which a coating is applied to bridge surface openings associated with the discontinuities and to prevent pressurizing fluid penetration within such discontinuities is improved through the application of a selected type of ceramic coating. Such coating is of a material which provides a substantially gas impervious ceramic coating, preferably of a thickness in the range of about 0.003-0.01", having a coefficient of thermal expansion matched with that of the casting surface to which it is applied as well as having the property of being viscous under the densification processing conditions at which the bond between the coating and the casting surface degrades. Upon cooling, the coating is easily removed from the surface of the densified casting.

Abstract: An intravaginal contraceptive system for the pre-programmed, unattended delivery of an antifertility steroid is disclosed. The system comprises (a) an antifertility steroid, (b) a delivery module comprising a reservoir for storing the steroid in an amount for execution of the program, a rate controller which maintains the rate of steroid delivered in a contraceptive effective amount throughout the life of the system, an energy source for transferring steroid from the reservoir to the vagina, and a portal for releasing the steroid from the module to the vagina, (c) a platform which integrates the module into a unit sized, shaped and adapted for insertion and retention in a vagina, and (d) a contraceptive program which provides for the controlled release of steroid to produce an antifertility effect over a prolonged period of time.

Abstract: A method of processing the end and joint portion of a decorative molding comprising a synthetic resin base having laminated thereon a layer of metal foil is disclosed. In accordance with the invention areas of reduced thickness are formed in the moldings to be joined such that a substantially level joint can be formed without using a separate joining member.

Abstract: The invention is directed to a brush system for an electric motor device having a motor housing made either of electrically conductive or electrically insulating material. The brush system for an electric motor mounted in the housing made of electrically insulating material includes a conductive sleeve mounted in the housing so as to cause a portion of the sleeve to protrude beyond the housing. A carbon brush is provided for contacting the commutator of the electric motor. This carbon brush is slideably disposed in and is electrically connected to the sleeve. A spring resiliently biases the carbon brush to extend beyond the sleeve and to resiliently hold the carbon brush against the commutator. A terminal holds an electric lead of the motor. This terminal includes an uninterrupted annular portion which is press-fitted onto and completely surrounds the protruding portion of the sleeve.

Abstract: A device for assembling lamination stacks for use in electric machines in which a first quantity of laminations is picked off to form the lamination stack and the size of the stack so formed is measured at an intermediate station. Then a second quantity of laminations which depends on the measurement result, is picked up and is added to the first quantity. A transport and pickup device, provided for picking up the second quantity of laminations, is controlled by the measuring device and takes the laminations from a magazine. In order to avoid loading and monitoring the magazine separately, the magazine is provided with at least three storage places which consist of carriers, disposed horizontally at equal angular spacings from each other on a rotatable column. In forming the lamination stack, the first quantity of laminations is picked up from the first carrier and fed to the intermediate station for measurement.

Abstract: An apparatus for dispensing groups of integrated circuit (IC) packages in a pattern and quantity corresponding to the pattern of unpopulated IC sockets on a printed circuit board. The apparatus includes a plurality of storage racks stacked one on top of another, with each rack corresponding to one row of socket positions on the unpopulated printed circuit board. Each storage rack includes a number of loaded IC dispenser magazines corresponding to the number of positions in that rack's corresponding row of socket positions which are to be populated with IC packages. The storage racks are normally supported at an acute angle which is less than that at which IC packages will slide down the dispenser magazines. The bottom storage rack includes a handle and it is pivotable at its lower end. When the assembler-operator pulls up on the handle, the storage racks are pivoted to an angle at which one component is dispensed from each dispenser magazine.

Abstract: A method of forming an electrical backplane comprising providing an initially oversized ground and potential plate, forming discontinuous slots in a staggered relationship near the edges of the top surface of one of the plates and the bottom surface of the other plates, laminating the plates together by filling the slots with insulative material and trimming the edge portions off by cutting through the filled slots and webs connecting the slots whereby exposed backplane edges lie opposite insulation in the slots of the plates.

Abstract: There is provided a shaving apparatus having a holder for at least two and preferably three cutting units arranged in a triangular pattern therein. A raised portion extends over that area of the holder situated centrally with respect to the cutting units, such portion being raised with respect to the periphery of the holder. Desirably such raised portion of the holder gradually slopes downwardly towards the periphery of the holder. An adjustable skin-tautening device is mounted at the periphery of the holder.

Abstract: A pizza cutter wherein the plunger is mounted for vertical reciprocation within a guard sleeve by an open spider fixed to the sleeve to expose a cutter mounted on the plunger below the spider for cleaning and visual observation during use. The cutter includes a plurality of radially extending blades detachably mounted on the plunger in an arrangement such that the sleeve, except when removed from the plunger, prevents detachment of the blades.

Abstract: Pinking scissors having replaceable cutting blades. The replaceable cutting blades have different edges to provide different types of pinking designs such as scallops, triangular sections, rectangular edges and the like. The replaceable blades are of rigid L-shaped construction one side serving as a base fitting against the supporting stem of the scissors and the other side having a cutting edge. Stop means are provided for registry on the supporting stems which are bifurcated and spaced apart to provide for easy reception of the replaceable blades. A special feature resides in the provision of a reversible cutting blade with both edges of the L-shaped sections having a pinking cutting edge. When not in use one section with the pinking edge serves as a base and when desired to provide a different design the blade may be removed and reversed with the unused portion serving as cutting edge and the section previously serving as a cutting edge used as a base fitting against the support stems.

Abstract: Safety scissors wherein the scissor members are composed of a metal member partially embedded in plastic in such a way that a part of the exposed metal serves as a cutting edge and the remaining exposed portion of the metal member bears the sliding friction when the two scissor members are moved relative to each other.

Abstract: A safety cutter blade for a rotary trimmer. The blade has a hub formed with a central opening for mounting it on the drive shaft of a rotary trimmer. Three equally angularly spaced cutting blades are formed integrally with the hub and extend outwardly from said hub. Each blade is formed with a convex rearwardly swept cutting edge which is tangential to the hub on one side of the cutting blade and a short straight forwardly swept cutting edge on the other side of each cutting blade. Either of these cutting edges is adapted to be the leading, or effective edge depending on the orientation of the blade on the drive shaft and the direction of rotation of the trimmer shaft. The safety blade is made of an elastomer reinforced with plastic fibers. A layer of coarse fabric made of threads of an organic polymer is embedded in the elastomer and intersects the cutting edges of the cutting blades.

Abstract: A safety cutter blade for a rotary trimmer. The blade has a circular hub formed with a central opening for mounting the blade on the drive shaft of a rotary trimmer. An annulus is made integral with and coplanar with the hub. A plurality of cutting teeth are formed integrally with the annulus at its periphery. Each tooth is provided with a swept convex cutting edge and a straight cutting edge on opposite sides thereof. The convex cutting edges constitute a set of negative cutting edges which force severed foliage away from the center of the blade while the straight cutting edges constitute a second set of cutting edges which are adapted to cutting short grass. Each of these sets of cutting edges is adapted to be effective when they are the leading edges of the teeth of the cutter blade which is determined by the direction of rotation of the trimmer drive shaft and the position of the blade relative thereto.

Abstract: An automatic development reel type cutter head for a filament trimmer comprises a circular base member having a circular array of post-like upstanding members and a filament coil disposed about selected of the post-like upstanding members and inside of the remaining post like members. The filament coil has a free end portion which is automatically deployed outwardly from the coil as the cutter head is rotated by a drive shaft upon which the cutter head is mounted against one of the post-like members so as to project radially outwardly therefrom. As one free end portion wears and breaks off as a result of frictional contact with the post-like member from which it projects, another free end portion is automatically deployed outwardly from another post-like member. In one embodiment of the invention a filament retainer plate is disposed over only those post-like members about which the filament is to be wound.

Abstract: A miter table for use with a saber saw. The workpiece to be mitered is clamped by clamping members to the lower surface of the table and the upper surface of the table is provided with parallel guides which guide the saber saw in movement and are located at an acute angle to the clamping members. A slot is formed between the guides and the blade of the saber saw projects through the slot and is moved into contact with the workpiece as the saw is moved between the guides.

Abstract: A blade device for motor-driven cutter instruments has a one-piece cutter bar with a smooth external edge, a sprocket wheel, an endless chain with chain links which meshes with the sprocket wheel and is guided on the cutter bar, and aligned with its central plane narrow, sharpened cutting elements on the outside of the chain links. One type of chain link is a slider which slides on the external edge of the cutter bar and has a lagging zone which meshes with the sprocket wheel and two passage holes arranged close to its base. The second type of chain link is two opposed trapezium-shaped very thin laminae on both sides of the cutter bar, with corner zones which cover the passage holes in the slider and two pins rigidly laser-connected, which pass through the passage holes.

Abstract: Set out herein is an electronic compass suitable for public use having a conventional pin supported magnetic needle which is placed over a set of magneto diodes or Hall devices arranged in quadrature. The magneto diodes or Hall devices are thus exposed to the highly enhanced magnetic field around the needle and will thus provide a direct readout, in electrical form, of the deviation from magnetic North. In this manner a relatively conventional arrangement of a magnetic needle may be utilized to provide the necessary signal source for electronic pick-off with the same accuracy obtained by a conventionally suspended arrangement practiced in the past.

Abstract: Compass apparatus includes a housing defining a liquid-filled sealed interior space and a compass card member disposed within the liquid-filled space for rotation therein. The housing comprises an upper transparent cover portion having an outwardly directed first flange extending around the perimeter thereof and a lower housing portion, preferably formed of elastic material, having an annular elastic flange extending around the periphery thereof, the upper surface of the latter flange abutting against the lower surface of the first flange in liquid sealing engagement therewith. A connecting ring having a U-shaped cross section maintains the abutting flanges in sealing engagement with each other thereby providing a housing which is simple to close and which may be reopened and reclosed as desired in a manner such that the integrity of the liquid seal is not impaired. A sealing ring member may be provided between the elastic flange of the lower housing portion and the lower flange of the connecting ring.

Abstract: A dryer in which fabrics are dryed quickly and at low temperature by subjecting them to microwave energy in an atmosphere of reduced pressure. The microwave energy elevates the temperature of the water within the fabric to its boiling point, which is quite low because of the reduced pressure, and the water vapor which is released from the fabric is condensed external to the microwave field at the same reduced pressure. In one embodiment the dryer is formed as a clothes dryer wherein the drying chamber is a spherical metallic vacuum vessel; the microwave energy is supplied by a solid state microwave array within the drying chamber; water vapor is condensed by a spray condenser external to the drying chamber; and reduced pressure is obtained by a water jet exhauster, which functions in part as a condenser. Drying time is accelerated by warming the lower surface of the drying chamber with hot water, and a jet of air fluffs the fabric after drying.

Abstract: A lumber conditioning kiln comprising an enclosure defining a closed chamber for receiving a stack of lumber so positioned as to provide space at the top and at the ends, a dehumidifier in said chamber containing an evaporator, said dehumidifier defining a flow path through the evaporator and a bypass passage around the evaporator, a blower for inducing air flow into the flow path of the dehumidifier for dehumidifying air and discharging dry air therefrom, fans for effecting a circulation of air within the chamber in a direction such that dry air from the dehumidifier is conducted across the top of the stack to the far end and from there reversely through the stack to the one end where the moisture-laden air from the stack is induced into the flow path of the dehumidifier and wherein there are dampers for reducing the air flow over the evaporator and increasing the air flow through the bypass.

Abstract: A tobacco pipe holder and dryer comprises a hollow housing having a cylindrical base portion and an upper portion opening from the base portion extending upward and flared outward therefrom and having around its upper periphery a plurality of downwardly directed nozzle outlets. A plurality of radially extending support members are pivotally supported on said housing and aligned with said nozzle outlets. A cup shaped supporting member is pivotally supported on the outer end of each of said support members and is movable into and out of juxtaposition to said nozzle outlets for supporting a pipe bowl with a nozzle outlet positioned therein. The apparatus includes springs urging each of said pivotal support members toward said nozzle outlets. The housing base portion has one or more air inlet openings, preferably louvered openings, and encloses a blower and an electric motor for operating the same. An electric heater is positioned in the housing above the blower for heating air circulating to said nozzle outlets.

Abstract: A tobacco pipe holder and dryer comprises an enclosed, forced air circulation apparatus having means to support one or more pipes with the stems or shanks, thereof open to the exterior of the apparatus and having an arrangement of air jets for supplying heated air under forced air circulation into the bowls of the pipes supported therein. The apparatus includes an electric blower and electric heater means in the form of electric self-limiting strip heaters.

Abstract: An inlet duct is provided for recirculating grain dryers of the type which have a drying column area, and a recirculating blower mounted in a room portion of the dryer, with an open side of the room communicating with the drying column area. The inlet duct is connected with an intake portion of the recirculating blower, and has an open end thereof disposed adjacent to the open side of the room, whereby during a full recirculating condition of the grain dryer, air is drawn into the recirculating blower substantially wholly from the drying column area. The inlet duct has an aerodynamically streamlined interior shape with walls which taper inwardly toward the blower intake portion for efficiently guiding the flow of air from the drying column area directly into the recirculating blower intake.

Abstract: An educational machine includes a plurality of cards arranged in a predetermined order. Each card has a first side and a second side. Information on the first side of each of said cards, respectively, corresponds to information on the second side of a respective preceding one of said cards. The educational machine includes a slot into which the cards are inserted in a predetermined order such that the first side is oriented upward. The educational machine also includes internal apparatus for inverting the cards and a apparatus for ejecting the inverted cards so that their second side is oriented upward. An ejected card contains information on its second side corresponding to information on the first side of the card being inserted.

Abstract: The invention relates to a simulator for providing waveforms of the type produced at a receiver from a sonobuoy transmission. The simulator signal includes a component representing reverberation under different sea state conditions and a component representing echo pulses received from a target having relative motion with respect to the sonobuoy. Selected initial range and target speed values can be set in the simulator so that the signal includes a sequence of echo pulses having the varying delay and doppler shift which would occur from a target starting at the selected range and moving at the selected speed.

Abstract: A disk has imprinted around its outer periphery various sailboat trim conditions, from beat to run. In the central portion of the disk is an index in the shape of a boat hull. Between this index and the outer periphery of the disk in a rotatable annular index with arrows for indicating the wind direction. By maintaining the central index in alignment with the longitudinal axis of the sailboat hull and rotating the annular index so that it is aligned with the wind direction, one obtains from the outer periphery of the disk a reading which indicates the proper trim of the sailboat for that wind direction.

Abstract: A yoke assembly for an aviation flight simulator capable of generating the appropriate control signals and mechanical responses for realistic flight simulation, including trim adjustment. In a preferred embodiment, the assembly comprises a rotatable and axially movable yoke shaft extending in an axial direction; a pair of sliding blocks mounted to be movable in the axial direction; a first spring rotationally coupling the yoke shaft with a first sliding block for simulating the rotational restoration force on an aircraft yoke; a second spring axially coupling the yoke shaft to the second sliding block for simulating the axial restoration force on an aircraft yoke; and adjustment means for adjusting the axial position of the second sliding block for simulating the effect of trim adjustment of an aircraft.

Abstract: A speech signal is input to a microphone (10) and applied through a signal compressor (14) to a filter array (18) consisting of a high pass channel (20), a midfrequency channel (22) and a low pass channel (24). The outputs of the filter array (18) are precision rectified in rectifiers (28), (36) and (46). The rectified signals are applied to voltage controlled power drivers (54) and (56), where the output of the midfrequency channel (22) and the low frequency channel (24) are applied to the power driver (54) and the output of the high frequency channel (20) and the low frequency channel (24) are applied to the power driver (56). The power driver (54) drives vibrators (58) and (60) and the output of the power driver (56) drives a vibrator (62). To drive the vibrators (58) and (60), a random frequency signal at the output of a one shot multivibrator (38) is amplitude modulated by the output of the midfrequency channel (22).