| Patent Number |
Title Of Patent |
Date Issued |
| D439555 |
Shift input module for automated transmission |
March 27, 2001 |
|
| 7306084 |
Dynamic modification of centrifugal clutch |
December 11, 2007 |
| A centrifugal clutch assembly includes movable centrifugal weight reaction surfaces that provide for actuation at varying rotational speeds. A radially movable front plate with a ramped surface changes the radial position at which the centrifugal weight begins moving the front plate |
| 7232021 |
Method and assembly for controlling a centrifugal clutch |
June 19, 2007 |
| A centrifugal clutch assembly includes a sleeve movable to selectively engage the clutch assembly independent of rotational speed. The clutch assembly includes centrifugal weights that move radially responsive to rotation of the clutch assembly. The centrifugal weights move pressure |
| 7158872 |
Method of timed shift to neutral in apparent stationary modes |
January 2, 2007 |
| A control for a transmission and a clutch monitors conditions to determine when a vehicle associated with the clutch and transmission is likely in a stationary state. If the vehicle appears to be stationary, with the transmission engaged and the clutch open, then the control determines |
| 7149617 |
Method of timed shift to neutral in apparent stationary modes |
December 12, 2006 |
| A control for a transmission and a clutch monitors conditions to determine when a vehicle associated with the clutch and transmission is likely in a stationary state. If the vehicle appears to be stationary, with the transmission engaged and the clutch open, then the control determines |
| 7069807 |
Adjustable shift detent assembly |
July 4, 2006 |
| A vehicle transmission detent assembly is provided that includes a housing having a bore. A movable shift rail is supported by the housing and includes a recess at least partially aligned with the bore. A detent is at least partially arranged within the bore and engages the recess. A |
| 7069806 |
Transmission auxiliary box seal system |
July 4, 2006 |
| The present invention provides a transmission including a main gear box and an auxiliary gear box secured to the main box. The auxiliary gear box includes an auxiliary shaft supporting an auxiliary gear with a clutch collar support on the auxiliary shaft adjacent to the auxiliary gear. T |
| 7013756 |
Transmission with deep reduction low range splitter gear |
March 21, 2006 |
| A low speed splitter transmission assembly includes a main gearbox and an auxiliary gearbox. The transmission assembly provides a relatively small numerical gear ratio step from the highest numerical gear ratio to the second highest gear ratio. The relatively small step between the highe |
| 7000751 |
Normally open clutch assembly device |
February 21, 2006 |
| A normally open clutch assembly includes a device holding a centrifugal weight in a position causing axial movement of pressure plates and thereby a clamping force between pressure plates and the friction disks. The clamping force holds the friction disks in a desired aligned position |
| 6973854 |
Range and splitter system |
December 13, 2005 |
| An auxiliary gear box for a transmission is provided including a piston housing having a first and second bore. First and second pistons are respectively arranged within the first and second bores and separate each of the first and second bores into two chambers. First and second shift |
| 6966237 |
First gear/reverse gate indicator switch |
November 22, 2005 |
| The first gear/reverse gate switch of the present invention includes a detent switch including a contact pin and a contact switch. When a manual transmission is shifted to a gear not in the first gear/reverse gate, the contact pin of the detent switch engages a recessed portion on a dete |
| 6939268 |
Vehicle transmission system with coast controls |
September 6, 2005 |
| A vehicle transmission system includes a transmission component that has an engaged condition where torque can be transferred from a vehicle engine to a drive component, and a non-engaged condition where torque is prohibited from being transferred to the drive component. A controller gen |
| 6874383 |
Adaptive shift sequencing |
April 5, 2005 |
| The inventive transmission has at least two different shift modes for shifting between the same two gear ratios. A control unit electronically senses various vehicle conditions and based on this information selects the appropriate shift mode suited for the particular driving situation. |
| 6769523 |
Clutch control for overcoming tooth butt |
August 3, 2004 |
| A strategy for overcoming a tooth butt condition includes changing a target closed clutch position over time. When a tooth butt condition exists, a controller selectively closes a clutch to provide limited engagement between the engine and the transmission. A first target closed clutch |
| 6769325 |
Shift biased detent profile |
August 3, 2004 |
| A detent assembly for a transmission is provided including a transmission component, such as a shift rail, movable between a plurality of shift positions including first, second, and neutral shift positions. A contoured surface on the shift rail includes first and second recesses, re |
| 6683263 |
Fall away transmission shift shaft switch profile |
January 27, 2004 |
| A transmission gear position sensing assembly includes a transmission housing with a bore having a shift shaft disposed therein. The shift shaft has an axis about which the shaft translates as the transmission is shifted between gear positions. The housing includes a hole with a switch |
| 6641505 |
Method of preventing engine stall using automated clutch control |
November 4, 2003 |
| A system and method of controlling an automatic clutch to prevent a motor vehicle engine from stalling is disclosed. The method includes the steps of determining an engine stall threshold, detecting accelerator pedal actuation, detecting current engine speed, and comparing current engine |
| 6571927 |
Transmission synchronizer pin arrangement |
June 3, 2003 |
| A plurality of pins couple the cones and the shift collar of a transmission auxiliary section together so that they rotate as a group. When the shift collar is moved laterally from neutral, the shift collar engages blocking surfaces on the pins and moves the corresponding cone to match t |
| 6553306 |
System for controlling engine braking in a vehicle driveline |
April 22, 2003 |
| Engine braking in a vehicle driveline during transmission upshifts is controlled to provide more efficient and accurate speed synchronization. The physical limitations on the engine brake components are taken into account to determine a delay between an off request and the actual time |
| 6547053 |
Torsional vibration damper |
April 15, 2003 |
| A torsional vibration damper is used for reducing or eliminating torsional vibrations in a vehicle driveline. A hub portion includes an elongated body with a first axial dimension. A disk portion is supported by the hub portion and has a second axial dimension that is smaller than the fi |
| 6526843 |
Combined detent and neutral switch mechanism |
March 4, 2003 |
| The detent and neutral switch mechanism includes a roller detent pin attached to a roller spring. The detent pin engages contoured shift fork extensions and resists movement of the shift fork extensions when gears are shifted and creates a "shift feel." A neutral switch positioned above |
| 6499375 |
Combined detent and interlock mechanism |
December 31, 2002 |
| A manually controlled transmission includes a combined detent and interlock pin mechanism. The elongated interlock pin prevents surrounding shift fork extensions from being engaged when a desired shift fork extension is selected. A recess in the interlock pin allows engagement of a shift |
| 6450051 |
Spring loaded transmission auxiliary piston |
September 17, 2002 |
| An auxiliary box for a heavy vehicle transmission includes a shift cylinder wherein fluid drives a piston in a first direction, and a spring drives a shift fork in an opposed second direction. If fluid is supplied to drive the piston in the first direction, a first gear is engaged in the |
| 6422105 |
Electronic modulating synchronizer |
July 23, 2002 |
| An improved synchronizer uses a friction element to induce a frictional torque to rotating gear and collar elements. The rotational speeds of the gear and collar elements are electronically monitored by a transmission control unit. When the transmission control unit has determined that t |
| 6390266 |
Transmission synchronizer pin arrangement |
May 21, 2002 |
| A plurality of pins couple the cones and the shift collar of a transmission auxiliary section together so that they rotate as a group. When the shift collar is moved laterally from neutral, the shift collar engages blocking surfaces on the pins and moves the corresponding cone to match t |
| 6367343 |
Non-metallic piston in a heavy vehicle transmission and method of assembling the piston |
April 9, 2002 |
| A heavy vehicle transmission includes a multi-speed main gear box and an auxiliary gear box, such as a range or splitter gear box, coupled to the main gear box. The transmission assembly includes a shaft having an outwardly extending abutment element and a step portion. A piston cons |
| 6360862 |
Clutch strap |
March 26, 2002 |
| A clutch assembly for a vehicle including a clutch cover rotatable about an axis is provided. A pressure plate is also rotatable about the axis and is movable along the axis relative to the clutch cover between engaged and disengaged positions. A resilient clutch strap secures the clutch |
| 6354166 |
Auxiliary gear box pistons stops |
March 12, 2002 |
| A heavy vehicle transmission auxiliary gear box has a piston housing defining internal fluid chambers. A piston shaft is further included to achieve the gear shifts in the auxiliary gear box. A yoke element is coupled to the shaft for engaging the multi-speed transmission. A piston i |
| 6347694 |
Biased wear sensor assembly for self-adjusting clutch |
February 19, 2002 |
| A pin has an end secured to the pressure plate and the pin is disposed within a pressure plate hole for constraining the clutch cover and the pressure plate together for rotation about the rotational axis. A bushing is disposed within the hole and includes a bore for receiving the pin. T |
| 6321615 |
Single rail top cover assembly |
November 27, 2001 |
| A top cover assembly for a manual transmission is provided having a plurality of gears and a reverse gear. The top cover assembly comprises a shift rail assembly, a reverse biasing assembly, and a shift housing assembly. The shift rail assembly includes a sensing device that interacts |
| 6253895 |
Adjustable bushing flange for clutch |
July 3, 2001 |
| An improved structure for allowing adjustment of a clutch due to wear includes a bushing which has a flange that is adjustably mounted on said bushing. In one method of providing the feature, the flange is provided by a washer which allows movement of the bushing within the washer in one |
| 6250815 |
Temperature compensating carrier bearing assembly |
June 26, 2001 |
| A vehicle transmission is provided having a housing that includes a support with an opening. The transmission also has a shaft with an axis of rotation and an end portion disposed within the support opening. A floating bearing assembly is arranged between the housing and the end port |
| 6246941 |
Method of synchronizing engine torque with vehicle torque load for accomplishing vehicle transmi |
June 12, 2001 |
| A method of engaging and disengaging transmission gears in a vehicle is provided. An intent switch is actuated for preparing the transmission to engage or disengage the transmission gears. An engine speed synchronization (ESS) controller processes an input torque parameter representi |
| 6244411 |
Polymer sleeve snap ring groove reinforcement |
June 12, 2001 |
| A clutch sleeve assembly for an automotive clutch system includes a polymer sleeve having a snap ring groove and a metal bushing disposed within the polymer sleeve having a flange that acts as a reinforcement for the snap ring groove. There are two configurations of the snap ring groove |
| 6243636 |
Two stage torque control method for a vehicle transmission |
June 5, 2001 |
| A semi-automated vehicle transmission includes a method of returning torque control to the driver of the vehicle. The transition from an initial current torque value to a desired torque value is accomplished in two stages. A first rate of change is utilized during a preselected time |
| 6227333 |
Transmission housing with integral pump assembly |
May 8, 2001 |
| A transmission has an integral lubrication system for delivering lubricating fluid to transmission components. The central portion of the lubrication system is conveniently located within the intermediate wall of the housing. The housing has an opening and inlet and outlet ports in f |
| 6210044 |
Transmission floating bearing carrier |
April 3, 2001 |
| A transmission for use in a vehicle has a housing with a center support and an opening. The transmission further comprises first and second shafts that extend coaxially along an axis and have adjacent ends disposed within the opening. A bearing assembly supports the adjacent ends within |
| 6189655 |
Transmission housing with integral lubrication system |
February 20, 2001 |
| A transmission having an integral lubrication (stem for delivering lubrication fluid to transmission components is provided. The lubrication system has a housing with a sump portion for holding the fluid. The lubrication system also includes a pump assembly with inlet and outlet cham |
| 6176146 |
Output shaft arrangement for manual transmission auxiliary boxes |
January 23, 2001 |
| A manual transmission has a main gear box and an auxiliary box with an input shaft extending along an axis from a first end that extends into the auxiliary box for transmitting power to the auxiliary box. The auxiliary box has an output shaft having a second end adjacent the input shaft |
| 6167996 |
Method and system for determining clutch status in a vehicle |
January 2, 2001 |
| A shift by wire vehicle transmission system includes control methods that are especially useful for controlling the transmission under start-from-stop conditions. Since the master clutch must be manually operated under such conditions, the invention includes a method of determining w |
| 6151978 |
Control methods for a shift by a wire vehicle transmission |
November 28, 2000 |
| A shift by wire vehicle transmission includes control methods for engaging gears after the vehicle has been at rest or coasting. When the vehicle is started from a stop or rest, a default starting gear is automatically selected. The driver can override the default gear and choose to star |
| 6092433 |
Small envelope range piston housing for electrical transmission range shift system |
July 25, 2000 |
| A vehicle transmission assembly includes a main gear box that supports an auxiliary gear box assembly, such as a range gear box. The main gear box has a shaft that is coupled to a shaft of the range gear box assembly. The range gear box assembly includes selectively engageable range gear |
