Work Files Saved Searches
   My Account                                                  Search:   Quick/Number   Boolean   Advanced       Help   

 The Delphion Integrated View

  Buy Now:   Buy PDF- 12pp  PDF  |   File History  |   Other choices   
  Tools:  Citation Link  |  Add to Work File:    
  View:  Expand Details   |  INPADOC   |  Jump to: 
 Email this to a friend  Email this to a friend 
Title: US5421267: Articulated pinch drive
[ Derwent Title ]

Country: US United States of America

View Images High


12 pages

Inventor: Mesko, Mark S.; Valenica, CA
Frederick, Ted W.; Saugus, CA
Bahrman, Gregory L.; Simi Valley, CA
Bradley, Aidan J.; Camarillo, CA

Assignee: The Walt Disney Company, Burbank, CA
other patents from WALT DISNEY COMPANY (617665) (approx. 101)
 News, Profiles, Stocks and More about this company

Published / Filed: 1995-06-06 / 1994-07-28

Application Number: US1994000281747

IPC Code: Advanced: B61B 13/12;
IPC-7: B61B 13/00;

ECLA Code: B61B13/12D;

U.S. Class: Current: 104/168;
Original: 104/168;

Field of Search: 104/168,165 105/030,32,33,82

Priority Number:
1994-07-28  US1994000281747

Abstract:     The present invention provides a drive system for a suspended or ground based roller coaster. Each vehicle has an attached drive fin. A plurality of pairs of drive wheels (pinch rollers) are disposed about the track and sequentially engage the drive fin to provide driving force. The drive wheels have a special linkage arrangement that permits the wheels to operate on curves or in a straight path. The linkage also provides self adjusting of the tension applied by the drive wheels to the drive fin to reduce wear and prevent slippage. The present invention uses pivots and tie bars to allow the system to articulate to accommodate the chording effects of the driven vehicle in a curve or helix. The self adjusting drive wheels operates during contact with the drive fin. The turning of the drive wheels in contact with the drive fin causes the drive wheels to generate a pinch force in a direction perpendicular to the vehicle drive fin. The applied force and drive wheel gap are self adjusting, providing more reliable operation, longer wear, and reducing or eliminating maintenance.

Attorney, Agent or Firm: Hecker & Harriman ;

Primary / Asst. Examiners: Le, Mark T.;

Maintenance Status: R2 Reinstated

INPADOC Legal Status: Show legal status actions

Family: None

First Claim:
Show all 8 claims
We claim:     1. A pinch drive system comprising:
  • a first pinch wheel rotating in a first direction, said first pinch wheel coupled to a first pivotally mounted pinch wheel arm;
  • a second pinch wheel rotating in a second direction, said second pinch wheel coupled to a second pivotally mounted pinch wheel arm;
  • a cross bar member fixedly coupled to first and second fixed pivot joints;
  • a first pivot arm having first and second ends, said first pivot arm coupled to said cross bar member at said first end at said first fixed pivot joint;
  • a second pivot arm having first and second ends, said second pivot arm coupled to said cross bar member at said first end at said second fixed pivot joint;
  • a tie bar having first and second ends, said tie bar coupled at a first floating pivot joint to said second end of said first pivot arm, said tie bar coupled at a second floating pivot joint to said second end of said second pivot arm;
  • spring means coupled to said pivot arm to urge said tie bar to a desired position.

Background / Summary: Show background / summary

Drawing Descriptions: Show drawing descriptions

Description: Show description

Forward References: Show 4 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (4)   |   Backward references (5)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 2pp US155025* 1874-09 Holdam    
Get PDF - 3pp US468860* 1892-02 Wright    
Get PDF - 7pp US3056359* 1962-10 Fey    
Get PDF - 5pp US3537402  1970-11 Harkess   DRIVE SYSTEM
Get PDF - 8pp US4285278  1981-08 Mitchell   Rapid transit system
  * some details unavailable
Foreign References:
Publication Date IPC Code Assignee   Title
  CA0875882 1971-07       
  DE0684399 1939-11       
  DE0252167 1987-12  B61B 13/04    
  GB1022079 1966-03    SCHLUMBERGER HOLDINGS A method for determination of fluid properties in a porous medium 
  GB1022080 1966-03    EDWARDS DOUGLAS Further applications of brine in power generation 

Other Abstract Info: DERABS G95-214213 DERG95-214213

Inquire Regarding Licensing

Powered by Verity

Plaques from Patent Awards      Gallery of Obscure PatentsNominate this for the Gallery...

Thomson Reuters Copyright © 1997-2014 Thomson Reuters 
Subscriptions  |  Web Seminars  |  Privacy  |  Terms & Conditions  |  Site Map  |  Contact Us  |  Help