Abstract: The invention relates to a towing vehicle (100) for maneuvering aeroplanes without using tow bars, comprising a braking device (130) having a first fluidically actuable braking circuit (148) which acts on the front wheels (106) and a second fluidically actuable braking circuit (150) which acts on the rear wheels (110). According to the invention, the braking device (130) further comprises a third fluidically actuable braking circuit (152), which likewise acts on the front wheels (106).

Abstract: Provided is a mobile radiation generation apparatus which reliably prevents the unsteady motion of a carriage unit with a simple structure and facilitates the fine adjustment of the position of a radiation emitting unit. Each of a front wheel and a rear wheel of a carriage unit is a caster that swivels about a swivel axis extending in a vertical direction. A support that vertically stands on the carriage unit supports a base end of an arm unit having a free end to which an X-ray emitting unit is attached. The arm unit rotates about a rotation axis parallel to the swivel axis with respect to the carriage unit. The carriage unit includes a front pedal that is provided closer to the front wheel than the support and is used to lock both the rotation and swivel of the caster at the same time.

Abstract: An electro-hydraulic brake system includes a first brake input that generates a first brake input signal and a second brake input that generates a second brake input signal. The system also includes a first valve that releases hydraulic fluid to control a first brake and a second valve that releases the hydraulic fluid to control a second brake. The system includes a speed sensor that generates a speed signal indicative of a speed of a work vehicle. A controller receives the speed signal, the first brake input signal, and the second brake input signal, determines the speed of the work vehicle based on the speed signal, and compares the speed of the work vehicle to a threshold speed. The controller synchronizes actuation of the first and second valves in response to the speed being in excess of the threshold speed to control the first and second valves.

Abstract: A wire lock for use with a rotary welding torch includes a piston and a lock receiver. The piston includes a head, a stem, and an air channel. The piston head defines an internal cavity in communication with the air channel. The generally cylindrical lock receiver includes a flat face, a central conduit, and a slot in communication with the central conduit. The piston and lock receiver are positioned such that the piston stem is received within the slot, respectively. The piston is reciprocally movable between an unlocked and a locked position, and the piston stem and lock receiver are configured to clamp an electrode wire therebetween when the piston is in the locked position. The wire lock may be co-axial or perpendicular to the axis of the rotary welding torch, and may be integral to the welding torch or a swan neck of the welding torch.

Abstract: A valve includes an electrical park valve configured to receive an electrical park signal and to allow hydraulic fluid to flow through a first electrically-controlled channel in response to the signal indicating a parking request, and a main valve configured to receive the hydraulic fluid from the first electrically-controlled channel and to allow the hydraulic fluid to flow to a braking actuator in response to receiving the hydraulic fluid. The valve also includes an electrical emergency control valve configured to allow the hydraulic fluid to flow through a first control channel in response to a request for emergency braking. The valve also includes an emergency enable valve configured to receive the hydraulic fluid from the first control channel and to allow the hydraulic fluid to flow to the braking actuator in response to receiving the hydraulic fluid from the electrical emergency control valve.

Abstract: Systems and techniques are described for generating cost values for a plurality of braking events of an aircraft, where each cost value is based on an expected wear of the wheel-and-brake assembly of the aircraft during the respective braking event. The systems and techniques may take into account data representative of conditions during the respective braking event of the aircraft to generate the cost values.

Abstract: A bi-directional linear clutch lock is provided that may selectively restrain a rack from translating. A bi-directional rotary clutch lock is provided that may selectively restrain a rotary rack from rotating.

Abstract: A brake structure for a wheelchair having a pair of wheels includes: a braking device for braking one of the pair of wheels; a grip to be held by an operator for a moving operation of the wheelchair, the grip including a base fixed to the wheelchair at any position around one axis along a travel direction A of the wheelchair, extending in such a manner as to protrude from the one axis in a radial direction when viewed from the travel direction of the wheelchair, and being mounted rotatably in one direction; and a braking operation section (a brake wire coupling member and a brake wire) for operating the braking device in accordance with the rotation of the grip. Consequently, the load of a braking operation can be reduced, and the ease of a moving operation during the braking operation can be improved.

Abstract: The parking brake system for a lap bar controlled lawn maintenance vehicle includes at least an actuation assembly and a stop assembly. The actuation assembly includes a push arm and a rotatable pedal arm, and the push arm is attached to a lap bar and is rotatable between and engaged position and a disengaged position. Rotation of the push arm from the disengaged position to the engaged position causes rotation of the pedal arm, and such rotation of the pedal arm causes the stop assembly to prevent the axle for the rear wheel that is controlled by the corresponding lap bar from rotating.

Abstract: A tractor steer-by-braking pedal arrangement. The pedal arrangement has a central brake pedal connected on one side to a right side pedal, and on the other side to a left side pedal. The central brake pedal acts on a brake system to produce the desired braking action. Each of the two side pedals when foot-operated by the driver, generates an activating signal to activate an electronic brake system, which only activates the brake required to steer-by-braking in the desired direction.

Abstract: An HV-ECU performs a program including the steps of: determining whether or not the HV-ECU is in an auto-P execution state; determining whether or not a predetermined time period Tb has elapsed since an auto-P was requested; and permitting determination of the shifting operation if the HV-ECU is in the auto-P execution state and if it is determined that the predetermined time period Tb has elapsed since the auto-P was requested.

Abstract: An engine noise engine noise baffle for a tractor brake shaft that extends laterally through openings in an engine compartment wall. The engine noise engine noise baffle has a cup-shaped portion pressed against the interior surface of the engine compartment wall, and a sleeve portion around the tractor brake shaft. The engine noise engine noise baffle has freedom of rotation with respect to the engine compartment wall. The engine noise engine noise baffle helps block and shield the operator cab from high engine temperatures, engine noise, dirt and dust, and engine fumes.

Abstract: In an adjusting device for wheel brake cables of a manually-operated parking brake, said cables are held in a yoke and are connected by means of the deflection element to a cable, which is fastened to a foot pedal for actuation. Through the intermediary of an adjustable compensating element, the yoke is braced by means of a spring element against a bracing member on a pull rod. The compensating element can be fixed by means of a setscrew in different inclined positions in relation to the bracing member; and, corresponding to this bracing member, the compensating element can be displaced on the pull rod and can be fixed on the pull rod by means of a threaded nut.

Abstract: An aircraft braking system for a main undercarriage or undercarriages incorporates at least two brakes, which may be carbon type brakes, and a control unit for selectively disabling at least one brake during taxiing only, the control unit being arranged to ensure that the disabling of the brake or brakes does not affect the directional stability of the aircraft when the braking system is operated.

Abstract: A braking device for skates having a shoe composed of a quarter which is articulated to a shell which is associated with a supporting frame for two or more wheels. The device has a traction element which operatively connects the quarter to lever system which actuates the movement of a braking element which is slidingly and freely rotatably associated with the frame in a region located in the interspace between two adjacent wheels. The motion occurs in contrast with a spring.

Abstract: An aircraft braking system for a main undercarriage or undercarriages incorporates at least two brakes, which may be carbon type brakes, and a control unit for selectively disabling at least one brake during taxiing only, the control unit being arranged to ensure that the disabling of the brake or brakes does not affect the directional stability of the aircraft when the braking system is operated.

Abstract: An anti ice skidding apparatus for providing resistance to lateral forces acting on a vehicle. The anti ice skidding apparatus includes a disc chassis, a device for engaging a roadway pivotally connected to the disc chassis and a device for securing the disc chassis to an underside of the vehicle. A device is connected to the securing device for pivoting the securing device between a first position maintaining the disc chassis and engaging device at a distance above the roadway and a second position placing the engaging device in engagement with the roadway. The engaging device is able to engage the roadway and provide additional resistance to lateral forces acting on the vehicle when in the second position. The engaging device may be one of a plurality of rollers or a blade which will engage with icy surfaces on the roadway and cut a groove in the icy surface to provide additional resistance to the lateral forces acting on the vehicle.

Abstract: An auxiliary braking system including a brake. A hydraulic arm is secured to a frame of the automobile. The hydraulic arm has a free end secured to the brake. The hydraulic arm has an up line and a down line extending outwardly therefrom. A pump is secured within the frame of the automobile. The pump is coupled with free ends of the up line and the down line of the hydraulic arm. The pump has wiring extending outwardly therefrom to couple with existing brake lines of the automobile.

Abstract: A brake system for a motor vehicle selectively brakes single or multiple wheels. The brake system includes a hydraulic master cylinder which is actuated by a brake pedal and which is connected by an electrically controlled valve arrangement to hydraulically operated brakes on both sides of the vehicle. The brake system also includes an electric switching device for controlling the valve arrangement in order to selectively connect the master cylinder with the brakes of both sides of the vehicle or with a brake on one side of the vehicle The electrical switching device includes a manually operated, spring centered rocker switch which can be switched from a central position into two deflected positions.

Abstract: An AND-type control valve useful in a vehicle braking system to prevent application of the vehicle brakes when only the right-hand or left-hand vehicle brakes are applied for the purpose of steering the vehicle. The control valve has two input flowpaths corresponding to the hydraulic braking circuit on different sides of the vehicle and a control output port for connection to the vehicle brake valve. Each input flowpath contains a non-return valve having associated therewith a flow sensitive device to provide a restricted flowpath which gives rise to a pressure drop which will tend to close or assist in closure of the non-return valve. A device is provided to prevent simultaneous closure of both non-return valves.

Abstract: An off-road vehicle has ground supports on each side which can be simultaneously braked, or independently braked to aid in steering. A braking system includes a brake valve device which feeds high fluid pressure to a pair of reversing valves. The reversing valves deliver the high pressure to respective wheel brake cylinders disposed on opposite sides of the vehicle. The reversing valves and brake valve device are controlled by a common pedal which comprises separately or simultaneously actuable half-pedals. Each half-pedal actuates the brake valve device and a respective reversing valve such that when both half-pedals are depressed the system operates in a dual-sided braking mode, and when only one half-pedal is depressed the system operates in a braked-steering mode. The system can be shifted directly from the dual-sided braking mode to a brake-steering mode by simply releasing one of the half-pedals without having to first release all braking action.

Abstract: A swingable skateboard includes a base board, and a handle assembly retained firmly on the leading end portion of the base board. The base board has a movable tail end. The front rollers are mounted on the crank arm of a crank member which is journalled on the base board. The handle assembly rotates synchronously with the crankshaft of the crank member to swing the front rollers. A rubber cushion is attached to the bottom surface of the base board for braking purposes. A linkage is connected between the movable tail end of the base board and brake shoes so that when the movable tail end is depressed, the linkage moves the brake shoes so as to engage with the rear rollers.

Abstract: The brake activation apparatus comprises first and second brake devices capable of being selectively applied, a shifting mechanism for selectively applying either the first or second brake device and not the other, a mechanism for overriding the shifting mechanism for applying both of the first and second brake devices, and a mechanism for releasing the override during both normal and manual operation. The apparatus is useful in a power drive unit comprising a carrier having first and second planetary gears rotatably mounted on the carrier, first and second rotatably mounted sun gears in meshing engagement with the respective planetary gears, the sun gears each having a drive output portion for driving respective devices and a braking portion for cooperation with the first and second brake devices to control the output of the power drive unit by selectively braking the respective sun gears.

Abstract: A brake source select system for selecting one of a plurality of sources of pressurized hydraulic fluid for use in actuating a brake system. The brake source select system (10) includes a primary, secondary and reserve source (20, 22 and 24) of pressurized hydraulic fluid connected in fluid communication respectively to a primary selector valve (32), a secondary selector valve (96) and a reserve selector valve (102). Pressurized hydraulic fluid from the primary source (20) is applied to deselect ports (94 and 100) on the secondary and reserve selector valves, causing those valves to block fluid flow from their associated sources to the brake system, so long as the primary source is operative.

Abstract: A hydraulic braking system for braking a driven device, particularly a human powered vehicle, comprises a hydraulic pump, a clutch coupling the hydraulic pump to the driven device when the clutch is actuated, a hydraulic circuit for a liquid including a flow restrictor restricting the flow of the liquid therethrough, and a hydraulic connection from the pump to the hydraulic circuit. This arrangement is such that, when the clutch is actuated to couple the pump to the driven device, the flow restrictor imposes a hydraulic load on the driven device thereby braking it. The clutch is a jaw clutch including friction surfaces normally spaced apart but brought together, upon the actuation of the clutch actuator, before the jaws are brought into engagement with each other, to start the driven jaw to rotate before it moves into engagement with the driving jaw.

Abstract: A supplemental brake system operates in cooperation with a motor vehicle's extant emergency brake system for selectively slowing a spinning wheel. A selector valve communicates with the vehicle's vacuum system and conduits are sized to cause a delay in the slowing of the spinning wheel. Further, the system provides for the gradual extension of the emergency brake cables which is unaffected by changes in vacuum levels in the vacuum system. The operator has full control of the vehicle during the system's operation.

Abstract: A steering-brake control system for a vehicle in which solenoid operated control valves associated with the respective wheels of at least one axle are normally maintained in an open position, so long as the valve solenoid operators are deenergized. Braking pressure is produced when either one of a right and left brake pedal is operated. Switches associated with each pedal are effective to energize the solenoid of one wheel control valve to cut off brake pressure to that particular wheel, so that only the one wheel corresponding to the operated brake pedal is braked to cause the vehicle to turn in that direction for steering control in off-street operation. In the event both brake pedals are operated, the switches and valves operate to admit brake pressure to each wheel brake cylinder for normal braking during on-street operation.

Abstract: In a dual hydraulic braking system in which brakes on opposite sides of a vehicle can be applied simultaneously for retarding or independently for steering the vehicle, a dual control valve assembly ensures that the brakes on one side cannot be applied before the brakes on the opposite side. When the brakes on one side are to be applied independently, a stem carrying inlet and exhaust valve heads moves with a pedal-operated piston so that the exhaust valve head engages with a valve spool to close an exhaust passage. The spool moves with the piston and head until it is arrested by a stop face, whereafter a seating on the piston moves away from the inlet valve head to allow pressurized fluid to be supplied to the outlet for the brakes. When the brakes are to be applied simultaneously, a volume of fluid trapped in a transfer connection between the exhaust valve heads arrests movement of the spools to ensure that the inlet valves open simultaneously.

Abstract: The invention relates to a process and device for braking an aircraft taxiing on the ground. According to the invention, links are provided between the left-hand pedal and the right-hand brakes and, inversely, between the right-hand pedal and the left-hand brakes, so as to limit the yawing movements. The invention is particularly applicable to the braking of a wide-track aircraft.

Abstract: A brake system for a vehicle having a pair of brakes each being spring-applied and hydraulically released. A two-position brake valve is disposed between a source of fluid and the brakes. At normal position, the brake valve allows to connect the brakes to a tank thereby applying the brakes while at an offset position fluid is introduced into the brakes so as to release them.The brake valve is operated either by an electric actuator such as stepping cylinder or introducing fluid into a pilot port through a solenoid-operated valve. The electric actuator is operated in accordance with a signal from a potentiometer which in turn is operated by the movement of a brake pedal. The solenoid-operated valve is actuated by a signal from a switch which is adapted to be switched on by a brake lever for parking and emergency braking.

Abstract: Locking system for two brake pedals of a motor vehicle such as a tractor, for enabling joint and separate actuation of opposite wheel pairs of the type wherein a bolt is utilized to couple the pedals. In accordance with a preferred embodiment, the bolt is spring biased into a locked position and is operable by the foot of the driver so as to be shifted into an unlocked position. These positions are assumed through the use of stops that are staggered with respect to one another both radially and axially and are mounted so as to be brought into contact with a side wall of one of the pedals by rotational and axial movements of the bolt.

Abstract: A system for selectively controlling the flow of brake fluid to the brakes of a two or four wheel drive vehicle utilizes a separate solenoid valve on each brake fluid line leading directly to a driven wheel. The valves are normally open, and are operated by primary and secondary electrical switches arranged in series. The primary electrical switch must be physically depressed and held to be activated and the secondary switch which is separately connectible to each solenoid valve, is actuated by the primary switch in such a manner as to separately activate each solenoid valve to control the flow of brake fluid to the brake of each drive wheel.

Abstract: In a two-pedal hydraulic braking system for vehicles the pedals are operable independently or simultaneously to apply two sets of brakes and both pedals actuate a common master cylinder to apply fluid under pressure to the brakes. Two normally closed selector valves are operable independently to direct the fluid to either of the sets of brakes when one pedal is operated, and the valves are operable simultaneously to direct the fluid to both sets when the pedals are operated simultaneously. Each valve is urged directly into its closed position by its respective pedal, and each pedal in turn is urged by a return spring into a retracted position in which the valve which it operates is closed.

Abstract: A method and apparatus for alternately braking a pair of drive wheels on an automotive vehicle to increase the total tractive effort of thevehicle, by preventing the spinning of a drive wheel which is on ice, in mud, on a slippery spot, and the like. An electric motor is mounted on the vehicle frame in a position near the two parking or emergency brake conventional operating cables. An elongated drive structure interconnects the motor and the brake operating cables to alternately exert tension on one of the cables while releasing tension on the other, and continuing the alternate tensioning of the cables to brake one drive wheel while the other drive wheel remains free to gain traction.

Abstract: A circulating system for hydraulic brakes having a master cylinder, reservoir for supplying fluid to the master cylinder, a wheel cylinder, and a fluid line connecting the master cylinder with the wheel cylinder. The circulating system includes a pump connected in a fluid line from the reservoir to the bleedoff port of the wheel cylinder. A check valve is connected between the pump and wheel cylinder to allow flow only in the direction from the wheel cylinder to the master cylinder. The pressure exerted by the pump is insufficient to cause braking. The check valve allows conventional braking by the master cylinder while the pump maintains a supply of fluid.

Abstract: A pivoted rocker attached to a conventional hand-brake lever enables either of two wheels of a motor vehicle to be braked via the respective brake cable and braking mechanism to aid in freeing the vehicle when that wheel is spinning for lack of traction.

Abstract: An agricultural tractor has individually operable near-side and off-side brakes with respective brake levers. Said levers are disposed one at each side of a master lever, the three levers being pivotable about a common axis and each provided with a foot pedal. The master lever carries a pivotally mounted cross-bar arranged to operate both of the brake levers with an equalising action when the master lever is operated. One of the two brake levers is fixed to a transversely extending horizontal shaft journalled in a sleeve which is mounted on the tractor and rotatably supports a clutch-operating lever.