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Title: US5381616: Rotary rockwheel assemblies
[ Derwent Title ]


Country: US United States of America

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6 pages

 
Inventor: Disney, Robin E. L.; Malvern, United Kingdom

Assignee: R. & R. Trench Equipment Limited, Malvern, United Kingdom
other patents from R. & R. TRENCH EQUIPMENT LIMITED (708006) (approx. 1)
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Published / Filed: 1995-01-17 / 1992-10-26

Application Number: US1992000927395

IPC Code: Advanced: E02F 3/20; E02F 5/08; E02F 5/14; E02F 3/18; E02F 5/02;
IPC-7: E02F 5/08; E02F 5/14;

ECLA Code: E02F3/18H; E02F3/20; E02F5/14;

U.S. Class: Current: 037/094; 037/189; 037/355;
Original: 037/094; 037/189; 037/355;

Field of Search: 037/348,362,355,94,189,462,907,104,270,91 405/180,181,183,174 172/832,387

Priority Number:
1990-03-27  GB1990000006781

Abstract:     PCT No. PCT/GB91/00435 Sec. 371 Date Sep. 28, 1992 Sec. 102(e) Date Sep. 28, 1992 PCT Filed Mar. 22, 1991 PCT Pub. No. WO91/14836 PCT Pub. Date Oct. 3, 1991.A rotary rockwheel assembly (1) is provided for cutting a narrow trench in the ground when driven along the ground by a vehicle. The assembly (1) comprising a support frame (14), ground-engaging skids (17) on the support frame (14) permitting the support frame to be moved in the direction in which the trench is to be cut, and a rotary cutting wheel (2) carried by the support frame (14). A hydraulic drive motor (8) rotates the cutting wheel (2) about a substantially horizontal axis, and pivot rams (18) serve to lower the cutting wheel (2) relative to the support frame (14) from a raised position in which substantially the whole of the cutting wheel (2) is above the surface (5) of the ground to a lowered position in which a substantial part of the cutting wheel (2) is sunk into the ground in a trench (33) cut by the cutting wheel (2). Such an assembly is capable of cutting a trench in a particularly efficient manner.

Attorney, Agent or Firm: Young & Thompson ;

Primary / Asst. Examiners: Reese, Randolph A.; Warnick, Spencer

Maintenance Status: E2 Expired  Check current status

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Designated Country: AU CA EP JP US  BE DE ES FR GB IT SE 

Family: Show 9 known family members

First Claim:
Show all 10 claims
I claim:     1. A rotary rockwheel assembly for cutting a narrow trench in the ground when driven along the ground by a vehicle having a chassis, the assembly comprising a support frame connected to said chassis, ground-engaging means rigidly secured to the support frame permitting the support frame to be moved in the direction in which the trench is to be cut, a rotary cutting wheel carried by the support frame, drive means for rotating the cutting wheel about a substantially horizontal axis, and lowering means on the support frame for lowering the cutting wheel relative to the support frame and the ground-engaging means from a raised position in which substantially the whole of the cutting wheel is above the ground to a lowered position in which the cutting wheel cuts into the ground while being rotated by the drive means, wherein the support frame is supported on the ground by the ground-engaging means as the cutting wheel is simultaneously rotated by the drive means and lowered by the lowering means so as to cut into the ground, so that the reaction forces generated by the cutting action are transmitted by way of the ground-engaging means into the ground.

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PCT Number: PCT/GB91/00435    WO9114836

PCT Pub./Filed Dates: 1991-10-03 / 1991-03-22

§ 371 / 102(e) Dates: 1992-09-28 / 1992-09-28

Forward References: Show 8 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (8)   |   Backward references (7)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 5pp US2336487* 1943-12 Lewis et al.    
Get PDF - 4pp US3206877  1965-09 Metailler   Propelling and operating drive for trenchers
Get PDF - 6pp US4110920  1978-09 Brown  Roscoe Brown Corporation Slack takeup apparatus for an endless excavating member
Get PDF - 7pp US4324056  1982-04 Sommerfeld   Wiping device for a ditch digging machine
Get PDF - 8pp US4750280  1988-06 Dalaine   Trench-digging machine
Get PDF - 8pp US4852946  1989-08 Hackmack   Surface working accessory and method
Get PDF - 28pp US5058294  1991-10 Bryan, Jr.   Grade control system for continuous bucket excavators
  * some details unavailable
       
Foreign References: None

Other Abstract Info: DERABS G91-310620

Other References:
  • "Cutting at a Dash", New Civil Engineering, Mar. 9, 1989, by R. Byles, pp. 30-31.
  • A photograph of a Mastenbroek trencher. Date unknown.
  • "Kukla Boasts of Unbeatable New Range in Trenchers", Construction News, Oct. 1987, p. 13.
  • "C Series Rock Trencher and Rockwheel", four pages. Date unknown.


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