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| Number | Title | Issue Date |
| 4073370 | Viscous fan drive assembly arrangement A fluid coupling adapted to be attached to a pulley assembly which includes a pulley member and a hub having a set of external threads. The fluid coupling includes an output coupling member, an input coupling member rotatably disposed within a fluid chamb... | 02/14/1978 |
| 4072927 | Tire pressure monitor Low pressure in a vehicle tire is detected by a system including an electronic circuit which activates a warning light in response to momentary phase shift between two cyclic signals. The system includes an oscillator which produces the first of the two c... | 02/07/1978 |
| 4072206 | Device for regulating vehicle road speed A motor vehicle speed control system which, upon activation by the vehicle operator, maintains the vehicle at a predetermined set speed. The system utilizes a duty-cycle type pneumatic servoactuator responsive to an electrical control signal for controlli... | 02/07/1978 |
| 4064956 | Vehicle drive and suspension system A bogie drive and suspension system for a rough terrain vehicle. Suspension is by a pair of walking beams, each of which is supported by trunnions which are integral and coaxial angle drive transfer units at the ends of the walking beam transfer power to ... | 12/27/1977 |
| 4064923 | Tire valve assembly A two piece valve assembly is provided for snap-in installation in a mounting rim for a tubeless tire. The assembly comprises a generally cylindrical valve stem member insertable in a bore formed through an elastomeric grommet member, which is in turn ins... | 12/27/1977 |
| 4064845 | Metering valve for pilot fuel injection A valve assembly for a pilot fuel injection system, which system also includes a transfer pump, a high pressure fuel pump, and a fuel injection nozzle. The valve assembly includes a blocking valve and a metering valve in an unitary housing having a high p... | 12/27/1977 |
| 4065100 | Hoist load brake An improved load brake mechanism for hoists allows free movement of load supporting means connected with the hoist. The mechanism will stop the supporting means whenever the means achieves a predetermined velocity or acceleration. The braking mechanism al... | 12/27/1977 |
| 4064980 | Dual speed viscous fluid coupling A viscous fluid coupling is provided of the type driven by a prime mover, the speed of which varies over a wide range. The coupling includes an output member defining two fluid chambers, with an input member being rotatably disposed in each of the fluid c... | 12/27/1977 |
| 4061218 | Fluid coupling device and bimetal coil for use therein A fluid coupling device is provided of the type including a rotatable input member and a relatively rotatable output member cooperating with a cover to define a fluid chamber therein. The device includes a movable valve member mounted on a valve shaft whi... | 12/06/1977 |
| 4061053 | Vehicle service brake pedal A service brake pedal for a stand-up industrial vehicle in which the pedal assumes a level attitude when an operator stands normally on the vehicle with one foot on the pedal and most of his weight applied to the heels of his feet. The service brake pedal... | 12/06/1977 |
| 4060159 | Hoist cooling system A hoist cooling system in which a motor-driven pump forces oil under pressure through the hoist load brake and overload clutch. An end cover of the hoist gear case is employed as a heat exchange member, and includes fins to further enhance cooling. Oil is... | 11/29/1977 |
| 4060116 | Method for producing self-locking fasteners An improved method for producing a threaded, metallic, self-locking fastener having a metallic patch flame sprayed thereon. The improved method includes a heat-treating operation which densifies and smooths the outer surface of the patch while not substan... | 11/29/1977 |
| 4060146 | Power steering mechanism A power steering mechanism especially for highway-type vehicles. The mechanism includes a worm defining an axial bore and an input shaft projecting into the bore and having a lost motion connection with the bore of the worm adjacent the output end of the ... | 11/29/1977 |
| 4056178 | Magnetically actuated viscous fluid coupling A viscous fluid clutch employing a magnetic field selectively actuatable by a heat sensing device to operate a valve arm to seal an inlet passage fluidly communicating an operating chamber with a storage chamber. The clutch includes a clutch and a housing... | 11/01/1977 |
| 4056134 | Clamp assembly A processor clamp for a tree harvester. The tree engaging surface of a movable arm of the clamp is made up of two elements, a convex cam portion and a concave portion, to insure that all trees within the diameter range of the harvester will be clamped alo... | 11/01/1977 |
| 4056118 | Syphon tube and vent valve assembly An improved radiator vent valve and syphon tube assembly is provided, the vent valve including a valve body and a threaded valve nipple adapted to engage a wall of a radiator. The nipple defines a passage communicating between the interior of the radiator... | 11/01/1977 |
| 4056135 | Clamp assembly A processor clamp for a tree harvester. A first tree engaging surface is defined by an edge of a frame member upstanding from the processing boom of the harvester. A second tree engaging surface is defined by a movable clamp arm which is located beneath t... | 11/01/1977 |
| 4054193 | Fluid coupling device and bimetal coil adjustment for use therein A fluid coupling device of the type including a rotatable coupling body defining a fluid operating chamber and a coupling member rotatable relative to the coupling body. A cover is associated with the coupling body and coupling member to define a fluid re... | 10/18/1977 |
| 4051936 | Fluid coupling device and valve support used therein A fluid coupling device of the type including a rotatable input coupling member, a cover associated therewith to define a fluid chamber, a valve plate separating the fluid chamber into an operating chamber and a reservoir chamber, and an output coupling m... | 10/04/1977 |
| 4050114 | Door closer assembly A door closer hold open assembly connectable to a door for closing a held open door in response to a control signal includes a housing, a linkage assembly connectable to the door, biasing means providing a restoring force to move the door to the closed po... | 09/27/1977 |
| 4050535 | Articulated vehicle An articulated vehicle in which one of the articulation pivots is mounted on the canopy of the vehicle. At least one of the hinge members of the pivot is in the form of a wide plate member to provide additional overhead protection for components mounted o... | 09/27/1977 |
| 4050559 | Viscous shear fluid coupling A viscous shear rotary coupling comprises a rotary member mounted coaxially within a rotary housing is rotatable relative to the housing and has surfaces which are close to but spaced from internal surfaces of the housing. The spaces between these surface... | 09/27/1977 |
| 4050534 | Drive axle system useable in 6 × 6 vehicle A drive axle system of the type useable in a 6 × 6 vehicle, especially one utilizing a tandem axle assembly to transmit torque from the vehicle transmission to first and second rear drive axles. The system comprises torque dividing means within the tande... | 09/27/1977 |
| 4050500 | Method of making a shell mold A stronger, thinner shell mold suitable for making cast metal parts comprises a base member of resin bonded sand and a second surfacing layer of a cured thermosetting binder material. Also disclosed is a method for forming the new shell mold.... | 09/27/1977 |
| 4050486 | Apparatus for delimbing trees A delimber blade having a central region beveled at a first angle to form a cutting edge at the tree engaging surface of the blade, and having opposed end regions beveled at first and second angles to form cutting edges spaced from the tree engaging surfa... | 09/27/1977 |
| 4050474 | Controller for fluid pressure operated devices providing high pressure to an auxiliary device A controller for fluid pressure operated devices such as power steering systems is provided. The controller is of the type having an inlet for receiving a system fluid flow, an outlet, a pair of control fluid ports for connection to a primary fluid pressu... | 09/27/1977 |
| 4050328 | Four-wheel drive vehicle with drive transfer gear assembly A drive transfer gear assembly for a four-wheel drive truck tractor. The tractor includes a front drive steer axle assembly, a rear drive axle assembly containing the drive transfer gear assembly, and a prime mover drivingly connected to the front and rea... | 09/27/1977 |
| 4050275 | Method and apparatus for aligning a valve head A method and apparatus for aligning the head of an engine valve in relation to the valve stem. A pair of die members is provided, the first die member being fixed relative to the frame of the apparatus and the second die member being cylindrical and rotat... | 09/27/1977 |
| 4050250 | Heat transfer element A heater head for use in hot gas engine is formed using improved heat transfer structures. The heat transfer structures used in the heater head are formed of an oxidation resistant enclosure enclosing a tube of high strength, gas impermeable material. A c... | 09/27/1977 |
| 4050247 | Control valve for variable displacement pump or motor Modifying the lands of a control spool of a control valve to provide pressurized fluid to the destroking servo when the land covers the destroking servo port. The lands of a control spool are provided with notches to allow fluid to flow from the control p... | 09/27/1977 |
| 4047463 | Tension indicator A one-piece mechanical device for visually indicating the tension in a monitored bolt, such as a mine bolt or the like, is provided. The device comprises a specially configured spring washer, preferably a helical washer, which is inserted in between the h... | 09/13/1977 |
| 4047268 | Worm gear clamping apparatus A worm gear clamping apparatus including a molded, one-piece worm gear drive head and strap assembly, the end of the strap oppositely disposed from the worm gear drive head defining partial internal threads on its outward surface. The apparatus also inclu... | 09/13/1977 |
| 4046024 | Adjustable steering column support Apparatus is provided for adjustable mounting a steering column in a vehicle, whereby the column may be telescoped, tilted or both, simultaneously, by unlocking the mechanism with a single handle. The mechanism includes a pair of side frames fixed within ... | 09/06/1977 |
| 4046032 | Start control Transmission and engine control means for a vehicle wherein the engine is connected through at least one friction clutch to a transmission having a positively geared power train therethrough. A low speed governor is provided to sense an engine speed at or... | 09/06/1977 |
| 4046163 | Relief valve An improved pressure relief valve for tubeless tires or the like is provided. The pressure relief valve includes a novel poppet valve dust cover structure which will automatically reposition the dust cover after each opening or cycle of the relief valve a... | 09/06/1977 |
| 4046210 | Multiple drive axle assembly A drive axle assembly, such as a tandem axle, is provided for transmitting torque from a main drive shaft to at least one of a first drive axle and a second drive axle. An input shaft is driven by the main drive shaft and has a helical gear in fixed engag... | 09/06/1977 |
| 4046239 | Viscous driven overrunning clutch A viscous shear overrunning clutch having a housing and circular member is disclosed which provides a driving force in one direction and an overrunning clutch when the relative angular velocities of the clutch and housing are reversed. The design includes... | 09/06/1977 |
| 4046213 | Control system and method for controlling vehicle speed An electronic digital control system for vehicle speed control of the type using a throttle servoactuator responsive to an electrical control signal. The control system includes a function switch which, when selectively actuated by the vehicle operator, c... | 09/06/1977 |
| 4044786 | Load sensing steering system with dual power source A system for providing pressurized fluid to a primary load circuit and an auxiliary load circuit, the primary load circuit being of the type which provides a load pressure signal representative of the demand for fluid in the primary load circuit. The syst... | 08/30/1977 |
| 4043419 | Load sensing power steering system A power steering system is disclosed which selectively controls the flow of fluid to a steering motor and an auxiliary device, and may have as its source of pressurized fluid either a fixed displacement pump, a variable displacement pump, or a load sensin... | 08/23/1977 |
