Transmission

• US 3,274,858 A
• Filed: 01/17/1964
• Issued: 09/27/1966
• Est. Priority Date: 01/17/1964
• Status: Expired due to Term

• Current Assignee: James K. Jensen, Peter D. Wetrich, Raymond J. Meyer
• Original Assignee: James K. Jensen, Peter D. Wetrich, Raymond J. Meyer
• Inventors: Meyer, Raymond J., Jensen, James K., Wetrich, Peter D.
• Application Number:
  US04/338,338
• Time in Patent Office: 984 Days
• US Class Current: 475/129
• CPC Class Codes: F16H 2003/445 without permanent connection between the input and the set of orbital gears
• CPC Class Codes: F16H 2200/006 the gear ratios comprising eight forward speeds
• CPC Class Codes: F16H 2200/0091 the gear ratios comprising three reverse speeds
• CPC Class Codes: F16H 2200/2007 with two sets of orbital gears
• CPC Class Codes: F16H 2200/201 with three sets of orbital gears
• CPC Class Codes: F16H 2200/2023 using a Ravigneaux set with 4 connections
• CPC Class Codes: F16H 2200/2048 with seven engaging means
• CPC Class Codes: F16H 2716/06 Circuits thereof
• CPC Class Codes: F16H 3/663 with conveying rotary motion between axially spaced orbital gears, e.g. RAVIGNEAUX
• CPC Class Codes: F16H 59/02 Selector apparatus
• CPC Class Codes: F16H 61/0262 the signals being hydraulic F16H61/04 takes precedence
• CPC Class Codes: F16H 61/686 with orbital gears
• CPC Class Codes: Y10S 74/01 Hydraulic control systems automatic automotive controls

Claims

7. A TRANSMISSION, COMPRISING:

A FRONT SECTION HAVING PLANETARY GEARING INCLUDING TWO CLUTCHES AND TWO BARKES SELECTIVELY ENGAGEABLE IN FOUR CLUTCH-BRAKE COMBINATIONS TO PRODUCE FOUR FORWARD SPEEDS IN AN INTERMEDIATE DRIVE ELEMENT;

A REAR SECTION INCLUDING PLANETARY GEARING DRIVEN BY SAID ELEMENT, AN OUTPUT SHAFT, A THIRD CLUTCH ACTING ON SAID REAR SECTION GEARING AND ENGAGEABLE IN ALL OF SAID FOUR COMBINATIONS TO UTILIZE SAID FOUR SPEEDS TO DRIVE THE OUTPUT SHAFT AT FOUR FORWARD SPEEDS, AND A THIRD BRAKE ACTING ON SAID REAR SECTION GEARING ENGAGEABLE, IN LIEU OF SAID THIRD CLUTCH, IN ALL OF SAID FOUR COMBINATIONS TO UTILIZE SAID FOUR SPEEDS TO DRIVE THE OUTPUT SHAFT IN REVERSE;

AND A FLUID PRESSURE CONTROL SYSTEM INCLUDING A PRESSURE SOURCE, FOUR SELECTIVELY CHARGEABLE ACTUATORS FOR RESPECTIVELY ENGAGING SAID FRONT SECTION CLUTCHES AND BRAKES, TWO ADDITIONAL ACTUATORS SELECTIVELY CHARGEABLE FOR RESPECTIVELY ENGAGING THE THIRD CLUTCH AND THIRD BRAKE, A FIRST VALVE MOVABLE SELECTIVELY AMONG FOUR POSITIONS FOR CONNECTING