Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 6592230 | Truck rearview mirror assembly having a display for displaying trailer coupling status information The truck rearview mirror assembly of the present invention is used on a truck having a coupling status system for sensing trailer coupling status. The rearview mirror assembly includes a mirror housing adapted for mounting to a truck, a mirror disposed w... | 07/15/2003 |
| 6302424 | Force-sensing fifth wheel A sensing system employs multiple sensors utilizing mounting structure integrated into a fifth wheel hitch and which is protected from the environment, is capable of accurately measuring forces along longitudinal and vertical axes for providing informatio... | 10/16/2001 |
| 6285278 | Electronic system for monitoring a fifth wheel hitch An electronic system monitors a trailer hitch assembly that has a hitch plate with a throat for receiving a kingpin of a trailer and a locking mechanism for locking the kingpin in throat. The system determines whether the trailer hitch assembly is properl... | 09/04/2001 |
| 6252497 | Coupling alignment warning system The coupling alignment warning system (CAWS) of the instant invention is designed to provide the driver of a towing unit, e.g., a commercial truck, with visual and/or audible cues that indicate whether the towing unit is aligned relative to a towed unit f... | 06/26/2001 |
| 6179316 | Stepped lock plunger fifth wheel hitch A fifth wheel hitch comprising a bifurcated top plate with a dead-end throat for receiving a cooperative kingpin, a hinged jaw pivotal between a closed position across the throat and an open position clear of the throat, the jaw having a rearward surface ... | 01/30/2001 |
| 6095544 | Fifth wheel hitch release A fifth wheel hitch operable between a fully locked condition and a fully released condition, having a top hitch plate and a lock jaw, a locking plunger shiftable between a biased, extended locking position engaging the jaw and a retracted position for re... | 08/01/2000 |
| 6092825 | Flatbar fifth wheel release handle A fifth wheel hitch, actuator and lock assembly comprising a bifurcated hitch plate, a kingpin engagement jaw movable between a closed position for engaging a kingpin and an open position for releasing a kingpin, a lever coupled with the jaw and operative... | 07/25/2000 |
| 5988666 | Fifth wheel hitch release A fifth wheel hitch operable between a fully locked condition and a fully released condition, having a top hitch plate and a lock jaw, a locking plunger shiftable between a biased, extended locking position engaging the jaw and a retracted position for re... | 11/23/1999 |
| 5904342 | Landing gear crank handle A landing gear crank handle for raising and lowering vehicle landing gear is provided that includes a first hand hold that is horizontal when the handle is in a full extended position, a second hand hold connected to the first hand hold by a central porti... | 05/18/1999 |
| 5861802 | Fifth wheel hitch coupling control system An electronic coupling control system for a vehicle trailer hitch assembly having a hitch plate in which a throat is defined for receiving a trailer kingpin and having a locking mechanism for locking the kingpin in the hitch throat. The electronic couplin... | 01/19/1999 |
| 5522613 | Self lubicating fifth wheel hitch A fifth wheel hitch having a fifth wheel hitch plate with a bifurcated rear portion defining a kingpin-receiving mouth, throat and latch, an upper surface and an upstanding peripheral rim defining a pocket over substantially all of the hitch plate, a plur... | 06/04/1996 |
| 5464241 | Plural height powered fifth wheel hitch A powered, adjustable height, fifth wheel hitch comprising a support plate having a front end portion and a rear end portion, a fifth wheel plate above the support plate having a front portion and a bifurcated rear portion, coaxial transverse trunnion pin... | 11/07/1995 |
| 5332250 | Pintle hook A pintle hook hitch having an outwardly upwardly curved, fixed horn, an outwardly extending pivotal latch arm movable between a lower, closed condition over the horn, and a raised open condition, the body having a jamb face for engagement by a lock, a pri... | 07/26/1994 |
| 5257796 | Integrated cam lever/handle lock fifth wheel A fifth wheel hitch has a single swinging jaw, i.e., pivotal lock element, a unique cam arm, a locking plunger, a release arm, and release handle that all specially function in an interrelated manner to clearly indicate the locked or unlocked condition of... | 11/02/1993 |
| 5069472 | Electronically controlled fluid release fifth wheel safety mechanism A controlled fluid release fifth wheel apparatus having a first control in the tractor cab and a second control outside the cab, in series with each other, and functionally located in series between a power source and a power actuator at the fifth wheel h... | 12/03/1991 |
| 5054805 | Trailer landing gear cushion foot A cushioned landing gear foot is attached to the landing gear leg by a tubular suspension axle within a housing abutment member on the lower end of the leg, and which abutment engages a resilient pad in a pocket on the foot when under compression load. Th... | 10/08/1991 |
| 4659101 | Fifth wheel Disclosed herein is a fifth wheel hitch having a set of jaws removably retained in a pocket on the underside of the bearing plate, replaceable by like jaws or jaws accommodating a different size kingpin. The hitch can be of forged aluminum, for on-highway... | 04/21/1987 |
| 4630570 | Portable stock handling unit The specification discloses a portable stock race and yard including a stock race supported on wheels and a plurality of wings swingably connected to the stock race and arranged to be folded out to form a stockyard. A tongue is pivotally mounted to the ra... | 12/23/1986 |
| 4569309 | Portable stock handling unit The specification discloses a portable stock race and yard including a stock race supported on wheels and a plurality of wings swingably connected to the stock race and arranged to be folded out to form a stockyard. A tongue is pivotally mounted to the ra... | 02/11/1986 |
| 4566715 | Fifth wheel Disclosed herein is a fifth wheel hitch having a set of jaws removably retained in a pocket on the underside of the bearing plate, replaceable by like jaws or jaws accommodating a different size kingpin. The hitch can be of forged aluminum, for on-highway... | 01/28/1986 |
| 4443025 | Fifth wheel assembly A fifth wheel assembly for coupling tractor and trailer units includes an improved trunnion bracket, comprising a pair of forged bearing caps having an inverted, U-shaped configuration, with bearing sleeves fixedly mounted therein. In sliding fifth wheel ... | 04/17/1984 |
| 4428595 | Fifth wheel hitch A fifth wheel hitch includes a kingpin locking mechanism having a pair of pivoting locking jaws which form a socket in which the kingpin is retained. An adjustment device varies the angular position of the closed jaws to vary the side-to-side dimension of... | 01/31/1984 |
| 4199168 | Fifth wheel suspension A support for a tilt stabilizing fifth wheel hitch that connects a truck tractor to a trailer, the fifth wheel plate being on a movable frame having a pair of convex shoes connected by a tie rod and resting on concave bearing plates on a fixed frame, the ... | 04/22/1980 |
