Abstract: A mechanical four-speed gearbox/drive system for household appliances comprising two drive-outlets; each drive-outlet driven at two different speeds in the same rotational direction; a motor, motor shaft, first drive-outlet and second drive-outlet, with installation of one-way bearings in suitable places in the gear-train. The motor drives two drive-outlets and rotates in clockwise and counter-clockwise directions through three one-way bearings and two gear down systems to provide four different speed drives. When operating in hi-speed mode, the first drive-outlet is directly driven by the motor. When operating in lo-speed mode, the first drive-outlet is driven via the gear down system, with resulting increase in torque. Simultaneously, second drive-outlet is driven via second gear down system to provide two different speed drives. This gearbox is simple to construct and operable without expensive control electronics.

Abstract: A rolling steel door, which includes a plurality of transverse rod members, a plurality of sleeves respectively sleeved onto the transverse rod members, a plurality of links respectively coupled to the transverse rod members to hold the transverse rod members in parallel, and a plurality of locating pins respectively fastened to the transverse rod members to stop the sleeves against the links, wherein the transverse rod members are hollow tubes; the links each comprise two coupling ends, two coupling holes respectively formed on the coupling ends and coupled to a respective transverse rod member, a reinforcing peripheral flange perpendicularly raised around the periphery thereof and the border of each coupling hole, and a neck on the middle.

Abstract: A mechanical transmission (10) includes a first gear (13), a second gear (15), a slip clutch (14), an input shaft (11), a fourth gear (20), a one-way bearing (21), a third gear (18) and an output shaft (12). The first gear (13) and the slip clutch (14) are mounted on the input shaft (11). The first gear (13) is meshed with the second gear (15) which is mounted on the output shaft (12). The one-way bearing (21) and the fourth gear (20) are mounted on the output shaft (12); the latter (20) is meshed with the third gear (18) which is mounted on the input shaft (11) to constitute a step-down gearing (22). When the load upon the output shaft (12) increases so that the torque imposed upon the slip clutch (14) is higher than predetermined, the slip clutch (14) releases, and the increased torque generated by the step-down gear set (18, 20) drives the increased load upon the output shaft (12). Two additional embodiments (10', 10") are disclosed.

Abstract: A solenoid operated actuator mechanism for positioning a shift fork in a double clutch arrangement for use in a transmission includes a pair of solenoid actuators operatively connected to a shaft that is fixed to the shift fork for positioning the shift fork in a neutral position when the solenoid actuators are de-energized and for positioning the shaft and shift fork selectively in a forward or reverse location if one or the other of the solenoids are energized. The invention includes a first embodiment where the shaft is fixed to the shift fork and to one end of a solenoid core element and wherein the forward and reverse solenoid assemblies are located on one side of the shaft; a second embodiment includes a shaft having end portions forming solenoid core elements.

Abstract: A vehicle compound change gear transmission is provided that features an auxiliary drive gear (24) carried by a mainshaft (20) having enhanced freedom of radial movement by eliminating all radial contact between a bearing member that resiliently supports mainshaft (20) for rotation relative to a stationary housing of the transmission by utilizing prescribed spacer member combinations.

Abstract: An electrohydraulic system for controlling the gear changing process in a mechanical, automatic gear-box having five gears. The system includes two pairs of electromagnetic valves (57, 58, and 59, 60) which control via pressure-control valves (61, 62) the flow of pressure medium to three operating cylinders (41, 42, 43). When activated individually, the electromagnetic valves control the engagement of the first, second, third and fourth gears. Simultaneous activation of the electromagnetic valves (58, 57) of the first and third gears will result in engagement of the fifth gear, whereas simultaneous activation of the electromagnetic valves (60, 59) of the second and fourth gears will result in engagement of the reverse gear.

Abstract: A pair of torque transmission units deliver torque to first and second cooling chambers that produce the partially frozen beverages. A first torque transmission unit is directly coupled to a geared motor. The first unit includes a stand with three upright members that rotatably support first and second axially aligned shafts. The first shaft is connected to the output of the geared motor. Axially separable sections of a coupler are attached to opposing ends of the shafts. The first shaft is rotatably mounted in a first upright member; the second shaft is rotatably mounted in second and third upright members. A drive wheel is attached to the first shaft. An output wheel is attached to the second shaft. The second torque transmission unit includes a stand having four uprights which rotatably support first and second axially aligned shafts. An input wheel is mounted on the first shaft.

Abstract: A tractor transmission includes a pair of dual power clutches that connects an engine to an input shaft through a gearset that selectively makes a direct connection or overdrives the shaft in accordance with the engaged or disengaged state of the clutches. A synchronizer connects the input shaft to an interior shaft of the transmission. A gear selector moves the sleeve of the synchronizer into engagement either with a gear on the input shaft or a gear on the interior shaft. When certain upshifts are made, the gear selector causes the clutch that overdrives the input shaft gear to disengage and the clutch that directly connects the input shaft gear to the engine to engage. This action slows the gear toward the synchronous speed at which the synchronizer connects the input gear to the interior shaft with minimal shifting effort.

Abstract: A preselected transmission has three friction clutches and one synchronized mechanical clutch assembly to provide five forward speed ratios. An additional mechanical clutch permits the addition of a reverse ratio. The clutches are combined with a gearing arrangement such that sequential or skip-shifting can be accomplished.

Abstract: A transmission comprises first and second input shafts which are drivable respectively from independently operable first and second clutches. Gearing is provided which enables drive to be transmitted from the input shafts to an output via a layshaft. Further gearing is provided on a further layshaft for selection of reverse ratio. In reverse ratio the further gearing is in a drive path which includes the first and second input shafts. The further gearing includes synchronizer means to facilitate selection of reverse ratio.

Abstract: A countershaft synchromesh type transmission is arranged to have primary and secondary groups of intermeshing input and output gears which are designed to selectively provide between the input shaft and the countershaft a common (third) speed change ratio. With this, the structures for supporting the gears can be simple.

Abstract: A vehicle transmission characterized by having a low profile, and a plurality of forward and reverse speeds. The transmission includes a plurality of shafts inclusive of an input shaft, an output shaft, a counter shaft and a plurality of gear shafts. The shafts are rotatably mounted in the transmission casing in a generally triangular transverse cross-sectional configuration. These are in selective gear communication. Selective gear communication is provided in part by hydraulic fluid responsive clutches selectively ported through the casing from a casing manifold.

Abstract: A gear transmission mechanism for an automotive vehicle, with a power input shaft, including several combination assemblies, each including a layshaft and a selectively engagable friction engaging mechanism which can either be engaged to rotationally drive the layshaft from the power input shaft or can be disengaged to rotationally disengage the layshaft from the power input shaft. All the layshafts are substantially parallel with one another and with a mainshaft. Each of several pairs of gear wheels consists of a mainshaft gear mounted on the mainshaft and a layshaft gear mounted on one of the layshafts. Of each of these pairs, one is a fixed gear which is fixed to its shaft on which it is mounted, and the other is an idler gear which, according to the selective operation of a gear engaging system, either can be rotationally coupled to its shaft on which it is mounted, or can be left rotationally disengaged from that shaft.

Abstract: An automatic transmission for a city bus and other highway vehicles comprises an engine-mounted gearbox with a laterally offset drive output to the rear wheels through a propeller shaft and differential drive unit. The gear box has four layshafts grouped round the drive input shaft. Multiplate pneumatic clutches, one on each layshaft, select transmission ratios under the control of a driver's selector switch acting through an electronic control unit and an electro-pneumatic valve supplied with air by a compressor. The control unit includes a retarder function provided by simultaneous partial engagement of the first and second gear clutches when the vehicle is in third or fourth gear. Access to the clutches for servicing is provided by end covers on the gearbox whereby the clutch elements can be replaced without stripping the gearbox.

Abstract: An automatic transmission has two countershafts, two clutches, an output shaft, two synchronizers, two input shafts adapted to be driven from the crankshaft of an engine through either of the two clutches and a one-way clutch that connects the first gear to the output shaft. The overrunning clutch is continuously driven but is easily overrun when higher gear ratios than the first ratio are selected. Changes of gear ratio result upon alternate engagement and disengagement of the friction clutches. Synchronizer clutches engage the next higher or lower speed ratio than the ratio in which the transmission instantaneously operates.

Abstract: First and second concentric input shafts are connected to an engine crankshaft through friction clutches, one for each input shaft. Two countershafts carrying forward speed ratio and reverse drive output gears are driven from pinions carried by each of the input shafts. Synchronizer clutches connect the output gears to the respective countershafts. The first forward speed output gear is mounted on its countershaft by way of an overrunning clutch. One forward speed output gear is continuously engaged with the reverse drive output gear and functions as a reverse idler for changing the direction of rotation of the countershaft when reverse drive is selected.

Abstract: A multispeed constant mesh gear transmission includes an input shaft together with first, second and third intermediate shafts arranged in a diamond or cruciform configuration together with an output shaft having an axis of rotation lying in a plane including the input shaft and the third intermediate shaft. In two different embodiments each of the three intermediate shafts include two multiplate fluid actuatable clutches shiftable under load. A plurality of gear trains selectively drive an output shaft at six different rotative speed ratios with respect to the input shaft in one direction of rotation of the output shaft and at three different speed ratios in the opposite or reverse direction of rotation of the output shaft. In one embodiment a total of six clutches and fourteen gears provide for the speed ratios and in a second embodiment a total of twelve gears and six clutches provide for the six forward and three reverse speed ratios.

Abstract: Disclosed is a power shift transmission having two input shafts, an output shaft, two countershafts which are first synchronized and clutched with either of the input shafts, and then alternately clutched to the output shaft. Each countershaft rotatably supports a ratio gear driven by one of the input shafts, a ratio gear driven by the other input shaft, and a drive gear for driving the output shaft. A reverse gear is rotatably supported by one of the countershafts. A double acting synchronizer is disposed between the two ratio gears on each countershaft for synchronizing and clutching either of the ratio gears to the countershaft. A hydraulically actuated friction clutch is disposed adjacent the drive gear on each countershaft for clutching the countershaft to the driven gear. One of the input shafts is a torque converter driven shaft; this shaft drives the ratio gears which are first and second speeds and the reverse gear.

Abstract: A change-speed gearbox has coaxial input and output shafts. Five intermediate shafts are equi-spaced around the input shaft and each has two gears fixed thereto, one of which meshes with a common gear on the input shaft, the intermediate shafts being movable axially.Five gears of different diameters are fixed to the output shaft around which five secondary shafts are carried by a rotatable cage. The five secondary shafts each have two gears fixed thereto, one of which meshes with a different one of the gears on the output shaft.Any one of a possible twenty five gear ratios between the input and output shafts may be obtained by rotating the cage until a selected one of the secondary shafts is in the same radial plane as a selected one of the intermediate shafts, that intermediate shaft then being moved axially to bring the second gear thereon into mesh with the second gear on the selected secondary shaft.

Abstract: A five speed motorcycle transmission with coaxial input and output drives. The transmission includes a driveshaft and a countershaft rotatably mounted in a gear housing for supporting transmission system components and gear arrangements. Input torque is applied in a conventional manner to one end of the driveshaft and transmitted through the transmission components in the selected gear ratio to an output sprocket which is freely rotatably mounted on the drive shaft. Torque shifting means in the form of axially displaceable drive dogs splined to the driveshaft and countershaft can be shifted axially by conventional shifter means for selectively transmitting torque from the driveshaft through various gear arrangements to the output sprocket. The gear arrangements include a high speed overdrive gear arrangement, a high speed direct drive gear arrangement, and three low speed drive gear arrangements.

Abstract: A thermostat control to change the setting of a thermostat to a preselected point and automatically to return the thermostat to the original setting after elapse of a preselected time interval.

Abstract: A transmission for a crawler tractor includes a first cross-drive shaft arrangement including two separate sections with a forward/reverse bevel gear arrangement connecting the two sections to a drive input shaft so that each shaft section is capable of being driven in forward or reverse. A second cross shaft arrangement is connected to the first cross shaft arrangement by constant-mesh spur gears and a third cross shaft arrangement is connected to the second cross shaft arrangement by further sets of constant-mesh spur gears. The second and third cross shaft arrangements are separated into shaft sections and the spur gearing and connections between shaft sections may be controlled such that Low and High working ranges may be effected in the transmission with first and second speeds being possible in the Low range, third and fourth speeds being possible in the High range and with a reduction being possible in each of the Low and High ranges.