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Title: US4405147: Trailer steering device for spaced axle trailer
[ Derwent Title ]


Country: US United States of America

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14 pages

 
Inventor: Horsman, John; Scottsdale, AZ
Ryden, James W.; Phoenix, AZ

Assignee: U-Haul Technical Center, Phoenix, AZ
other patents from U-HAUL TECHNICAL CENTER (593055) (approx. 1)
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Published / Filed: 1983-09-20 / 1981-06-19

Application Number: US1981000275504

IPC Code: Advanced: B60D 1/06; B60D 1/30; B60T 11/10; B62D 13/00; B62D 13/04;
IPC-7: B60D 1/00;

ECLA Code: B60D1/06; B60D1/30; B60T11/10F; B62D13/00B; B62D13/04;

U.S. Class: Current: 280/443; 280/442; 280/460.1; 280/DIG.014;
Original: 280/443; 280/442; 280/460.R; 280/DIG.14;

Field of Search: 280/443,442,444,426,DIG. 9,DIG. 14,460 R

Priority Number:
1981-06-19  US1981000275504

Abstract:     A steering device for steering a spaced axle trailer includes a pair of pivots connecting a tongue to a frame of the trailer. The steering device includes a primary arm pivotally connected to the trailer frame. The primary arm is coupled to pivotal spindle mechanisms on which the front trailer wheels are mounted to translate pivotal movement of the primary arm to the spindles, causing steering of the trailer. A mechanical surge brake device is connected to the tongue. A laterally movable element of the surge brake mechanism is attached to a hitch socket that fits over a hitch ball attached to a tow vehicle, so that the distance between the tow vehicle and the trailer is decreased slightly when the brakes of the tow vehicle are applied. First and second tensile control elements are connected between first and second spaced points of the primary arm and first and second spaced control connecting points of the tow vehicle to apply tensile forces to the primary steering arm, causing it to pivot in response to changing of direction of the tow vehicle relative to the trailer.

Attorney, Agent or Firm: Cahill, Sutton & Thomas ;

Primary / Asst. Examiners: Peters, Jr., Joseph F.; McGiehan, Donn

Maintenance Status: E3 Expired  Check current status

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First Claim:
Show all 14 claims
I claim:     1. A trailer comprising in combination:
  • (a) a frame having a front portion and a rear portion;
  • (b) tongue means pivotally connected to said front portion for effecting connecting of said trailer to a trailer hitching means attached to a tow vehicle;
  • (c) first and second rear wheels and rear axle means for supporting said rear portion of said frame, said first and second rear wheels being rotatably connected to said rear axle means;
  • (d) first and second front wheels and front axle means for supporting said front portion of said frame, said first and second front wheels being rotatably connected to said first axle means;
  • (e) pivot connecting means for pivotably connecting said tongue means to said front portion and confining pivotal movement of said tongue means to a substantially vertical direction relative to a support surface supporting said trailer, said tow vehicle including a trailer guiding means rigidly connected to said tow vehicle and having first and second trailer connecting points spaced from and located on opposite sides of said trailer hitching means;
  • (f) first and second spindle means for pivotally connecting said first and second wheels, respectively, to said front axle means to effect steering of said trailer;
  • (g) first and second lever arms connected to said first and second spindle means, respectively, to effect controlled pivoting of said first and second spindle means;
  • (h) primary steering arm means having first, second and third spaced points thereon pivotally connected at said first point to said frame for effecting pivoting of said spindle means in response to changing of direction of said tow vehicle relative to said trailer;
  • (i) first coupling means for coupling said first and second lever arms to said primary steering arm means to effect pivoting of said first and second spindle means in response to pivoting of said primary steering arm means;
  • (j) first tensile connecting means for connecting said second point of said primary steering arm means to said first trailer connecting point to pull said second point of said primary steering arm members toward said tow vehicle to cause pivoting of said primary steering arm means in response to turning of said tow vehicle in a first direction relative to said trailer;
  • (k) second tensile connecting means for connecting said third point of said primary steering arm means to said second trailer connecting point to pull said third point toward said tow vehicle in response to turning of said tow vehicle in a second direction relative to said trailer, said first and second tensile connecting means exerting only substantial pulling forces on said primary steering arm means to cause pivoting of said primary steering arm means;
  • (l) a plurality of wheel brake mechanisms for controllably applying braking forces to at least one of said front and rear wheels, said tongue means including mechanical surge braking means for connection to said trailer hitching means to actuate said wheel brake mechanisms in response to a rearward force exerted by said trailer hitching means on said tongue means, said first and second tensile connecting means allowing shortening of the effective length of said tongue means due to actuation of said mechanical surge braking means without exerting rearward forces on said second and third points of said primary steering arm means;
wherein said first tensile connecting means includes a first rigid member having first and second ends and first flexible means connected to the first end of said first rigid member and to said primary steering arm means for preventing said first tensile connecting means from producing a substantial pushing force on said primary steering arm means, and wherein said second tensile connecting means includes a second rigid member and second flexible means connected to a first end of said second rigid member for preventing said second tensile connecting means from producing a substantial pushing force on said primary steering arm means.


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Forward References: Show 21 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (21)   |   Backward references (9)   |   Citation Link

Buy
PDF
Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 7pp US1422040* 1922-07 DeLaunty    
Get PDF - 3pp US2092683* 1937-09 Stidham    
Get PDF - 6pp US2338934* 1944-01 Gross    
Get PDF - 6pp US2498779* 1950-02 Winchester    
Get PDF - 6pp US3613921  1971-10 Ryden  Arcoa, Incorporated TOW DOLLY FOR WHEELED VEHICLES
Get PDF - 7pp US3753580  1973-08 Folkert   STEERING SYSTEM FOR TRAILERS
Get PDF - 7pp US3876240  1975-04 Watson   Steerable trailer
Get PDF - 11pp US4171825  1979-10 Woodell  Robinson; Robby Steerable towing device
Get PDF - 4pp US4191394  1980-03 Kasselmann  The Bendix Corporation Trailer hitch
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Foreign References: None

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