Abstract: An automatic device for producing ice cubes has separate probes for measuring the temperature of the environment, and, for measuring the temperature of water supplied to an input of the device, the probes being connected to a monitoring device operative to calculate the optimum operation of the device under any particular climatic conditions.

Abstract: A method for controlling the defrosting of evaporators provided for refrigerator-freezer units which are cooled by a single compressor. The method includes the steps of forcedly resetting the defrosting timer to its cooling mode after entering defrosting mode after the defrosting of a preset number of evaporators. The remaining undefrosted evaporators are warmed by their remaining heat after the forced resetting, by supplying electric current to their defrosting heaters sooner than the already defrosted evaporators in the next defrosting, by supplying additional electric current to their defrosting heaters after the forced resetting, by accomplishing a complete defrosting in an unsalable mode, by using outside air for defrosting by stopping their outer fans or by additional heating via auxiliary defrosting heaters.

Abstract: A refrigerating circuit apparatus comprises a variable capacity compressor for compressing refrigerant, an inverter circuit for supplying a variable output frequency to the compressor, a memory for storing data representing at least two different control modes including a first mode wherein the output frequency of the inverter circuit is changed at one frequency changing rate until the difference between the actual pressure value of refrigerant flowing into the compressor and a set value is minimum and a second mode wherein the output frequency of the inverter circuit is changed at a different frequency changing rate until the difference between the actual pressure value of refrigerant flowing into the compressor and the set value is minimum, a select switch for selecting either first or second mode stored in the memory and a control circuit for varying the output frequency of the inverter circuit based on the selected mode to control the rotation speed of the compressor.

Abstract: Air conditioning apparatus is disclosed. The apparatus includes, referring to FIG. 28 of the drawings, a number of air outlets 636, a dehumidifier 630, a constant pressure blower 833 in the dehumidifier 630 a duct 653 for circulating dehumidified air to the outlets 636, dampers 655 for controlling the rate at which dehumidified air circulated to the outlets 636 is delivered to a space to be conditioned, and panels 637 positioned in heat transfer relationship with space to be conditioned by the apparatus. The constant pressure blower controls the rate at which dehumidified air is delivered to the air outlets 636 so that dehumidified air is available at the rate required from time to time by each of the air outlets 636. Each of the air outlets 636 is operable to deliver air circulated thereto to a space to be conditioned.

Abstract: A refrigerant piping system for a refrigeration machine includes an injection pipe connected at one end thereof with the suction port of a compressor and at the other end with the outlet port of a condenser. The injection pipe is provided with a solenoid valve for suppressing a coolant from flowing into the compressor during a heating operation of the machine. By closing the solenoid valve during the heating operation, the liquid coolant is prevented from flowing into the compressor through the injection pipe.

Abstract: A refrigerant-compression temperature regulation system providing for suction gas cooling includes: (a) a compressor for compressing the refrigerant in vapor and gaseous phase; (b) a condenser downstream from the compressor for condensing the compressed refrigerant to liquid phase; (c) a first valve downstream from the condenser for creating a predetermined pressure drop; (d) a first evaporator downstream from the first valve for transferring heat between a load and the refrigerant; (e) a suction gas return line leading from the first evaporator to the compressor for returning heated refrigerant to a suction inlet of the compressor; and, (f) a first indirect heat exchanger having a suction gas cooling path from the first valve to upstream of the first evaporator, the first indirect heat exchanger for passively transferring heat from the gas and vapor phase refrigerant in the suction gas return line to the vapor phase refrigerant entering the first evaporator.

Abstract: A thermostatic expansion valve located at the inlet of an evaporator in the refrigeration apparatus has a valve housing supporting a diaphragm in its sealed space. Pressure from a thermal bulb is applied on the upper surface of the diaphragm, and pressure of a reduced-pressure refrigerant in the inlet of the evaporator is applied on the lower surface of the diaphragm through on equalizing signal passage extending from a refrigerant passage formed in the housing to the sealed space in the housing. In the refrigerant passage, a valve seat is formed. The equalizing signal passage is opened at the passage in the downstream side of the valve seat. A sectional area of the refrigerant passage between the passage side opening of the signal passage and the valve seat is larger than that of the refrigerant passing hole of the valve seat but smaller than that of the refrigerant passage at a position remoter from the valve seat than the passage side opening of the signal passage.

Abstract: An air-conditioning control system for use in an automotive vehicle comprises a variable capacity compressor having capacity thereof being variable by an external control signal, at least one first cooling unit for cooling a vehicle compartment, and a second cooling unit for cooling a refrigerator. A first valve is arranged between the compressor and the first cooling unit for connecting them to cause same to form a cooling circuit when the first valve is open. A second valve is arranged between the compressor and the second cooling unit for connecting them to cause same to form a refrigerating circuit when the second valve is open. A valve control unit controls opening and closing of the first and second valves.

Abstract: A heat pump installation including a condenser, a motor-compressor, an evaporator, and a subcooler to subcool the refrigerant flowing from the condenser before it enters the evaporator. The motor-compressor is mostly immersed in a static liquid contained within an inner tank. Preferably, the static liquid contains a top layer of oil to prevent evaporation. The static liquid helps to ensure the cool and quiet operation of the motor-compressor. Surrounding the inner tank is an outer tank which provides a cylindrical chamber wherein circulating liquid such as water flows. Immersed within the circulating water is the condenser. The circulating water withdraws heat from the inner tank and the condenser. The subcooler includes a housing which contains and directs the flow of the circulating water before it enters the cylindrical chamber. Immersed within the circulating water of the subcooler housing is a refrigerant subcooling coil.

Abstract: A refrigerator comprises a cassette accommodating section which is enclosed by a wall, kept at a low temperature, and capable of accommodating a film feed cassette in such a way that it can be released therefrom. The film feed cassette houses therein a long test film containing a reagent which will react with a liquid sample and give rise to a change in optical density. The film feed cassette has a film outlet through which the long test film is fed out. The refrigerator has a film outlet which is formed in the wall at a position corresponding to the position of the film outlet of the film feed cassette and through which the long test film is pulled out. An air stream jetting system jets dry air to the surface of the portion of the long test film positioned between the film outlet of the film feed cassette and the film outlet of the refrigerator.

Abstract: A machine for progressively roughing marginal portions of shoe bottoms comprising a shoe support (18) having toe support means (470) and a heel support arrangement including two sets of clamps (390, 392), one set (392) of which serves also as sensing means for sensing, by engagement with an off-set portion of the shoe last whether the shoe thus supported is a left or a right. An inductance sensing device (610) associated with the second set of clamps (392) supplies a signal to control means of the machine, the signal being dependent upon whether the shoe is a left or a right. The control means ensures that, in the operation of the machine, a roughing operation is carried out on the shoe bottom in such a manner that the inside waist region of the shoe bottom is traversed always in the same directiion, regardless of whether the shoe is a left or a right (and of course similarly the outside waist region is consistently operated upon).

Abstract: A combination lock or padlock having pushbuttons where the combination of buttons to be pushed to open the lock is mechanically programmable by the user is disclosed. The lock has a case and a locking arm and associated slider, moveable between a locked and unlocked position. A plurality of buttons project from at least one side of the case, and are owner-reversible between two orientations and moveable through holes in the case between first and second positions. In one orientation, movement of the locking means is barred in the first position and permitted in the second position, and in the other orientation movement is permitted in the first position and barred in the second position. The orientation of any button is not being visually ascertainable from outside the case, so the lock owner can program the combination of the lock by selecting the orientation of the respective buttons.

Abstract: A security device for front-loading VCRs, to prevent access to the interior of the VCR when the device is in place. It comprises a body which is releasably insertable into position in the cassette-receiving opening of the VCR, the body being shaped so as to obstruct access to the interior of the VCR through that opening when it is in position. A lock operable when the body is in position, releasably locks the body in that position.

Abstract: A storage drum security apparatus (10) is provided to secure the apertures (24,26) on a storage drum or barrel (12). The apparatus (10) includes a large aperture subassembly (14) and a small aperture subassembly (16) which are interconnected by a securing bar subassembly (18). The first bung member (28) is provided with a post member (40) which extends upward through an isolator member (56) to engage a post receiving hole (98) formed in a flattened portion (92) of the securing bar (90) while the second bung member (66) includes a ball portion (80) on a neck (78) which mates with ball receiving structure (102) in the tubular portion (94) of the securing bar (90). This relationship prevents access to turn either of the bung members (28,66) while the securing bar (90) is in place. The securing bar (90) is also adapted to be used as a wrench to turn both the bung members (28,66 ) when desired.

Abstract: A portable antitheft locking mechanism for a motor vehicle steering wheel and brake pedal, e.g., a J-bar, having plural lighting elements, such as light emitting diodes, which generally indicate the profile of the locking mechanism so that it may be seen in darkness before forcible entry. The J-bar includes an independent source of power, such as a battery, which energizes the lighting elements either when the J-bar engages the vehicle member or when the access lock is secured, or both. The lighting elements provide means to inform the thief of the J-bar during darkness so as to deter his ill-intended efforts and spare the owner of unnecessary physical damage resulting from forcible entry. The J-bar preferably includes contact switch element which closes upon engagement with the steering wheel and/or a microswitch responsive to securement of an access lock on the mechanism to activate the lights thereby to conserve source when not in use.

Abstract: Interlock device between an ignition lock and a manual selector lever of an automatic gear-change transmission has a first latch element interacting with the ignition lock and a second latch element interacting with the manual selector lever. The two latch elements are connected by means of a flexible adjusting linkage for transmitting tensile and compressive forces so that only in the parking position of the manual selector lever is the ignition lock actuable into its position of rest which solely allows the ignition key to be removed and wherein the manual selector lever is blocked in its parking position when the ignition lock is in the position of the rest.

Abstract: A spare keys and retaining card set for automobiles and/or for other purpose locks mainly consists of a plurality of spare keys and a retaining card. Each spare key may be inset into the retaining card within a key shaped hollow and may be easily removed out of the hollow and the card, accordingly, for use by the user. The retaining card has a size similar to that of a name card and can be put into a wallet or a pocket for easy carry. Whenever the original key is lost or is not carried with the user, the spare key may timely resolve the problem to open a door.

Abstract: A tube bending apparatus is provided for placing a plurality of bends in an elongated tube. The apparatus includes a position sensor for sensing at least one location on the tube for assessing the accuracy of the bends placed therein. The apparatus further includes a programmable bender having a bend die and a clamp die for securely engaging the tube and bending the tube through a selected degree of curvature. A collet assembly is operative to axially and rotationally position the tube for each sequential bend. A pressure die boost and a collet assembly are provided for exerting axial pressure on the tube to urge the tube into the bend. The amount of axial force is programmed and selectively controllable in response to sensed operating conditions. A lubricated mandrel is programmably operative to be placed inside the tube. The movement of the mandrel is programmable and the flow of lubrication therethrough is both programmable and condition responsive.

Abstract: A method of manufacturing a metallic tube with a spiral fin for use as a heat transfer tube of a heat exchanger and the like. A solid metallic bar or metallic elementary hollow bar provided with a small hole is supplied to an inclined rolling mill having a plurality of rolls provided with a plurality of annular grooves formed on an outer circumferential surface thereof, and the solid metallic bar or metallic elementary hollow bar is worked into a pierced hollow bar by piercing rolling by means of a piercing plug and at the same time a fin is formed on an outer circumferential surface of the pierced hollow bar to integrate the fin with a body of the tube. Accordingly, the piercing rolling and the formation of the fin on the outer circumferential surface of the tube can be carried out at the same time, so that the manufacturing process can be remarkably shortened and the productivity can be high.

Abstract: A machine for cutting a relatively wide sheet of material into a plurality of relatively narrow strips to reduce bowing and camber in the cut strips is disclosed. The machine supports and moves the material along a path defined through the machine. The material initially engages a first pair of furrowing disc sets disposed on opposites sides of the sheet, which form a plurality of shallow furrows in the sheet as it passes therebetween. The material next engages a pair of slitting disc sets, also disposed on opposite sides of the sheet, which cut the relatively wide sheet into a plurality of relatively narrow strips as it passes therebetween. The slitting disc sets also engage and firmly hold the sheet near the furrows during the cutting process. Lastly, the material engages a second pair of furrowing disc sets which also engage and firmly hold the sheet near the furrows during the cutting process.

Abstract: A rolling mill stand with at least one manipulator for axially moving the rolls, particularly the work rolls, of the rolling mill stand. The rolls are supported and secured in chocks. The chocks are guided in the housings of the rolling mill stand so as to be vertically slidable in the direction of the rolling force. The chocks include pushing blocks which guide horizontally in the direction of the rolling axes. The manipulators supported by the housings act on the pushing blocks from the operator side. The manipulator is connected to the pushing block through a gear arrangement for transmitting the adjusting distance of the manipulator. The gear arrangement operates without slipping.

Abstract: An applicator die for use with a crimping machine of the type in which a supply of terminals are fed in the form of a terminal strip comprising a carrier band and a plurality of terminals respectively secured at one end thereof to successive points along the band, individual leads are fed to the machine and the machine functions to crimpingly apply a terminal to an end of each lead and sever the terminal from the carrier band.

Abstract: A press for performing a work operation on a workpiece including a yoke defining a central bore, a ram mounted for reciprocal movement in the bore and carrying a fabricating tool on one end of the ram, an electric motor secured to an end wall of the yoke and having an output shaft passing through the end wall of the yoke, a ball screw driven by the output shaft of the motor and positioned in the bore of the yoke, a ball nut mounted in the bore on the ball screw, and a force multiplying mechanism interconnecting the ball nut and the ram and operative to move the ram to a preparatory position and thereafter multiply the force applied to the ram to facilitate the performance of the work operation.

Abstract: A mass flow meter probe having an upstream tube and a downstream tube that extends into a main gas flow conduit is disclosed. The sensor for the mass flow measurement is located in the bore of a housing connecting the tubes and by incorporating the sensor into a valve that can block flow between the tubes, the mass flow meter can be calibrated in the field. The probe can be used as differential pressure device for flow measurments, when the valve is closed. A means for cleaning pressure ports is also disclosed.

Abstract: A support for mounting a vehicle chassis on an alignment bench. The support has a threaded bushing telescopically received in a sleeve fixed to a carrier arm. In use, the axial length of the bushing and sleeve assembly can be adjusted so that when received between the side walls of an attachment bracket for a vehicle suspension component, they lie closely adjacent to and preferably bear on the side walls. In use, the shank of a bolt is inserted through the side walls of the attachment bracket and the bushing and sleeve assembly received between them and is preferably retained therein by a nut received thereon. When desired, this mounting support permits the vehicle to be pivoted relative to the bench while still secured thereon by the support.

Abstract: An acoustic loading rod for use in testing transducers which are intended for use in a liquid medium. The rod comprises an elongated body (10) capable of simulating the normal acoustic impedance presented to a transducer to be tested by the medium in which the transducer is to operate, the rod (10) having a bore (30) in its main body portion containing a core of material having a close match of acoustic impedance with the material of the rod but a higher acoustic loss factor. Active piezo-electric transducer (22) is mounted between the ends of the rod.

Abstract: An acceleration detector comprising transducer including a pair of ring-shaped piezoelectric elements, a terminal having a ring-shaped eye portion for taking out an output from the piezoelectric elements and a weight for applying a stress to the piezoelectric elements in response to an acceleration applied to the detector. The transducer is mounted on a base having a threaded hole by a screw having a threaded portion thread-engaged with the threaded hole of the base. The axial length of the threaded portion of the screw is selected such that its substantially entire length engages the threaded hole in order not to damage an electrically insulating tube placed over the screw by the thread on the screw. The threaded hole in the base may have a counter sink for providing a predetermined dimensional allowance in the relationship between the axial length of the threaded portion and the depth of the thread hole.

Abstract: The invention relates to a method and an arrangement for measuring the properties, particularly the degree of compaction of a stiff compactable mass such as fresh concrete, to be cast or a similar soil mass. In order to make the control of compaction more effective, gaseous pressure fluid is blown through the mass during the compaction of the mass, simultaneously, observing increases in the pressure of the gaseous pressure fluid in the surface portions of the mass due to increased flow resistance. The pressure fluid is blown through an opening formed in a wall adjoining the mass to be compacted and by means of a source of pressure fluid connected to the opening. Changes in the flow resistance are measured by means of a measuring device.

Abstract: Apparatus for unattended retrieval of samples of material to be tested for viscosity provides substantially continuous monitoring capability for a blending plant. A single device is used for both retrieving the samples from a pipe conveying the material and for delivering the samples to a measuring chamber of a viscometer. The device, such as a pump or a solenoid operated valve, is controlled by a sequence timer programmed to generate a timed sequence of signals. Preferably, the device is operated to provide a new sample to the viscometer when the measuring chamber is being heated, thereby displacing the previous sample without requiring a cleansing agent.

Abstract: A signal control generator for a multi-cylinder internal combustion engine has a position sensor which generates output pulses which indicate prescribed rotational angles of the crankshaft of the engine for each cylinder. The output pulse for a prescribed reference cylinder of the engine is shorter than the pulses for the other cylinders. The reference cylinder is recognized by comparing the pulse width or the duty cycle of each pulse with the pulse width or the duty cycle for previous pulses corresponding to other cylinders of the engine. The period between consecutive output pulses is used to control the ignition timing of the engine.

Abstract: A magnetic float for a magnetic sensor wherein magnetized magnetic powder is dispersed into a foamed synthetic resin, and the magnetic flux thereof acts on a reed switch in the magnetic sensor to turn on or off the reed switch. The magnetic powder is substantially wholly coated with the synthetic resin.

Abstract: An ultrasonic imaging apparatus comprising an ultrasonic transducer, and a delay circuit section. The transducer has an array of ultrasonic transducer elements, and emits ultrasonic waves and receives echo waves to convert these waves into echo signals. The delay circuit section delays the echo signals by delay times determined by at least the directions in which the ultrasonic waves have been emitted from the transducer. This circuit has first and second memories for alternately writing and reading the echo signals, and a circuit for addressing the first and second memories by applying these memories with addresses, the number of which corresponds to the delay time.

Abstract: A pressure or vacuum gauge measures pressure of gas within a chamber. A quartz oscillator is disposed within the chamber for undergoing oscillation having a frequency dependent on a body temperature thereof. A constant heat source is disposed in spaced relation to or directly on the temperature-dependent quartz oscillator for heating the same to hold the body temperature thereof which is dependent on the pressure of surrounding gas. The oscillating frequency of the quartz oscillator is converted into a signal indicative of the pressure of the gas.

Abstract: The invention concerns a device for measuring a physical quantity, for example a force (A), and providing an output signal (Vs) whose amplitude represents the measured value. The device comprises a first oscillator (1) including a resonator (3) to which the force (A) is applied, this oscillator delivering a first alternating signal (S1) whose frequency depends on the magnitude of the force (A), a second oscillator (2) supplying a second alternating signal (S2) whose frequency is determined by the amplitude of the output signal (Vs), an EXCLUSIVE OR gate (20) receiving the first and second signals, and a low-pass filter (21) delivering the output signal (Vs) in response to a signal supplied by the gate (20). The amplitude of this output signal depends on the phase difference of the first and second signals, and constitutes a measurement of the magnitude of the applied force (A). The device is advantageously used when the measurement is to be displayed in analog form.

Abstract: Tension dynamometer which, when in traction connection with a cable, serves to determine the tension forces during the laying of the cable, the dynamometer including the following parts:a strain gauge (9),a preamplifier (10),a voltage-to-frequency converter (11) which converts the signal from the force measuring sensor,a transfer circuit (12, 13) which uncouples the converted signal of the force measuring sensor and transfers it to a reading station, anda storage battery (15) to supply power to the above-named elements.The dynamometer additionally has a time switch (17, 18) which interrupts the power supply of at least one current-consuming element after an established period of constant tension force and turns it on again upon the occurrence of a tension force change, or extends this period by an established length of time upon the occurrence of a tension force change during the period and during the extension does not interrupt the power supply.

Abstract: Sampler (1) for liquid substances, especially a water sampler, comprising a body (2), a sampling container (3) fitted with a sealable bottom (6) and cover (7), as well as a closure for closing the sampling container (3) of sampler (1) to be immersed in liquid upon a lowering cable (8), the closing being effected at a desired depth by a weight (13) to be dropped along the cable. The sampling container (3) is mounted for axial movement on body (2) external of the container. Body (2) is provided with a release mechanism (4) from which container (3) can be suspended in an upper position relative to body (2) upon a laterally hinged cover (7) which is in an open position. Hook (10) and peg (11) are provided for locking the laterally hinged bottom (6) of the upper positioned container (3) in an open position.

Abstract: A transmission comprising an outer hollow stationary casing having first and second open ends, an outer surface and a cylindrical inner surface. The inner surface has a circumferentially extending, uniformly shaped first zigzag groove. A first hollow cylindrical member is rotatably mounted coaxially within the casing and has an axially aligned output shaft which extends outwardly from the second end of the casing. The cylindrical member has a plurality of transversely extending parallel slots extending therethrough which register with the first zigzag groove. A second hollow cylindrical member is rotatably mounted coaxially within the first cylindrical member and has an output connector extending outwardly from the closed end thereof. A circumferentially extending, uniformly shaped second zigzag groove is formed on the outer surface of the second cylindrical member and registers with a portion of each slot.

Abstract: In a continuously variable traction roller transmission, a combination of a precess cam and a generally L-shaped link is used for converting a rotational movement of a traction roller supporting member to an axial movement of a spool of a speed change control valve. The cam surface of the precess cam is convexed to achieve an optimum characteristic of speed change ratio.

Abstract: An automatic transmission for a motor vehicle comprises a power transmitting system divided into two gear-change units with respect to an input shaft for receiving the power from the engine, the power being transmitted to an output shaft through the two units, each of having respective counter shafts. The counter shaft of one of the units is provided thereon with a first gear stage meshed with a first drive gear fixedly supported on the input shaft. Control of the engine braking at the first-gear stage is accomplished by the engagement or disengagement of the lock up clutch.

Abstract: A turning gear apparatus mounted adjacent the bull gear of a large turbomachine rotor has a carriage pivotably mounted to the frame, a first pinion rotatably mounted on the carriage, and a second pinion continuously engaging the first pinion and rotatably mounted to the frame coaxial with the carriage pivoting axis. The improvement comprises locating the carriage on the side of the bull gear where it rotates in an upward direction, with the axis of the second pinion located such that when the carriage is pivoted and the first pinion engages the bull gear, the axis of rotation of the first pinion is located on a selected angle below the horizintal substantially equal to the pressure angle of the bull gear tooth, resulting in substantially vertical reaction forces.

Abstract: The fluid-powered actuator having a body, an axially extending rotatable shaft with a plurality of helical grooves, and an annular piston sleeve reciprocally mounted within the body and receiving the shaft therethrough. The piston sleeve has a plurality of radial bores extending fully therethrough with an inward open end adjacent to the grooved shaft. Guide pins are rotatably disposed in each of the pistion sleeve bores and ride in the shaft grooves. An annular carrier is reciprocally mounted within the body coaxial with the piston sleeve and is adjustably axially movable relative thereto. The carrier has a plurality of radial bores extending fully therethrough with an inward end adjacent to the grooved shaft. Guide pins are rotatably disposed in each of the carrier bores and ride the shaft grooves. Rotation of the carrier is prvented is prevented relative to the piston sleeve.

Abstract: The new automatic-manual transmission system includes all of the components of a standard transmission including a conventional gearshift lever and a clutch pedal. In addition, the system includes a gearshift position-selection panel is located apart from the gearshift lever. The panel enables the driver to select the desired gear position of the gearshift lever by manipulating the panel without the necessity of handling the gearshift lever. Also, included is a controller which transforms the driver's gearshift selection to an output signal which corresponds to the gearshift position selected by the driver. The system also includes a linkage means for mechanically repositioning the gearshift lever automatically in accordance with the output signal. The linkage includes two motors, two driving links each pivotally engaged with the motor, a coupler attached to one of the driving links, and a gripper link which is secured to the gearshift lever.

Abstract: A noise and vibration damper for a shift lever assembly in a manually operable vehicle transmission is disclosed. The damper includes a hollow cylindrical housing having upper and lower pairs of aligned, transversely extending apertures. The upper end of a lower shift lever member extends upwardly into housing, while the lower end of an upper shift lever member extends downwardly into the housing. A transversely extending pin extends through apertures formed in the ends of each of the shift lever members and through their respective pair of apertures to secure the shift lever members to the housing. The ends of the pins are supported within the apertures by nylon bushings. The ends of the upper and lower shift lever members are spaced apart from one another and from the damper housing by a hollow cylindrical sleeve of vibration dampening material, such as polyurethane.

Abstract: A drive and locking system enables a rotor (2) to be turned between two end portions which are rotationally displaced in relation to one another through a present angle, and allows the rotor to be locked in an end position. Corresponding to the end positions are end stops (1a, 1b) against which the drive urges the rotor (2). In this position movable levers (12), which are disposed between two parts and fixed to one of them, can be released. The levers (12) are provided with teeth (11) which then engage in recesses in the rotor (2). The still-effective drive moment of the drive system then entrains the part (13), to which the levers (12) are not fixed, in a direction opposite to the rotational direction of the rotor. The levers (12) are then guided from the position in which they link both parts by passing over sloping surfaces, and the levers (12) are then brought into a locking position of the rotor (2) and of the part (14) which is provided with the levers (12).

Abstract: A differential drive mechanism for automotive vehicles includes a rotary housing rotatably mounted within a support casing and being in drive connection with an input shaft, a pair of split drive axles rotatably carried by the rotary housing coaxially with the rotational axis thereof for relative rotation, a pair of axially spaced pistons slidably disposed within a sealed cylindrical chamber in the rotary housing to be axially inwardly moved by a thrust force applied thereto, a pair of axially spaced clutch assemblies disposed between the pistons for transmitting drive torque from the input shaft to the drive axles when engaged by axially inward movement of the pistons, and an annular intermediate element disposed between the clutch assemblies for applying the thrust force acting on one of the clutch assemblies to the other clutch assembly, wherein the thrust force is produced in response to differential rotation between the rotary housing and the drive axles and applied to the pistons.

Abstract: A bicycle foot pedal crank arm construction that provides a relatively long lever arm between the foot pedal and crank arm rotational axis during the power stroke; during the return stroke (upstroke) the lever arm distance is shortened. Anti-friction rollers are provided between each hollow crank arm and each associated crank arm extension to guide the extension in and out on the crank arm, with minimum tendency to wobble or bind.

Abstract: An extension handle for a wrench is provided. The extension handle is elongated and has two U-shaped elements in planes perpendicular to the length of the extension handle. One of these U-shaped elements has its open and facing in one direction and the other U-shaped element has its open end facing in a direction opposite to the direction that the open end of the first element faces. This permits the extension handle to receive wrenches and to apply torque to the wrenches. In order that the extension handle will receive wrenches that are not flat, the U-shaped elements hold the wrenches in spaced relation to the body of the extension handle.

Abstract: An extendable torque bar has a multi-sided rack member with teeth extending along a side, which fits within a tubular member whose bore has a geometric configuration corresponding to the rack member. The rack member has an adapter for engaging a socket for a nut or bolt, or the like. The tubular member has a second adapter at its rear end for engaging a tool or other driving mechanism. A pawl is supported by an annular member which is affixed to the tubular member. The annular member has an outer surface shaped like the frustum of a cone. The pawl fits through an opening in the annular member and is held in place and pivots about a pivot member projecting through the annular member. The teeth of the pawl contact the teeth of the rack member by extending through a slotted opening in the tubular member. When the pawl teeth are in contact with the rack teeth, the edge of the pawl opposite the side of the pawl containing the teeth coincides with the plane of the outer surface of the annular member.

Abstract: A multipurpose automotive tool kit is provided in a housing which is also a handle. A variety of sockets and other useful tools are stored in the housing and used individually or attached to the housing used as handle. As a handle, the housing acts as both a levering device and as a viable tool having inherent useful sockets immediately available in the surface structure.

Abstract: This invention is related to a hand tool specifically designed for operation to mount or remove a bicycle crank to or from the bolted bottom bracket bearing axle of a bicycle frame, which includes a tool handle having a front wedge to serve as a driver, a screw bolt having one end fixedly connected with a socket and having the other end movably connected with a bolted sleeve by means of screw joint. Through the arrangement of the said component parts, the hand tool is very practical for dismounting the fastening elements of bicycle cranks.