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Title: US5575538: Rock saw with centerline conveyor assembly and method of digging a narrow trench
[ Derwent Title ]

Country: US United States of America

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14 pages

Inventor: Gilbert, Jerry F.; Southlake, TX
Smith, Jack D.; The Colony, TX

Assignee: Astec Industries, Inc., Chattanooga, TN
other patents from ASTEC INDUSTRIES, INC. (41810) (approx. 100)
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Published / Filed: 1996-11-19 / 1995-06-01

Application Number: US1995000457991

IPC Code: Advanced: E02F 3/20; E02F 5/08; E02F 7/02; E02F 9/02;
IPC-7: E01C 23/09; E02F 5/08;

ECLA Code: E02F5/08; E02F3/20; E02F7/02; E02F9/02L;

U.S. Class: Current: 299/039.2; 037/096; 299/039.3;
Original: 299/039.2; 037/096; 299/039.3;

Field of Search: 299/39.2,39.3,64 037/094,95,96,359 404/091

Priority Number:
1995-06-01  US1995000457991

Abstract:     A rock saw has a cutting wheel and a conveyor assembly capable of retrieving automatically essentially all materials excavated by the cutting wheel and of discharging the retrieved materials into an adjacent truck or the like. The conveyor assembly includes a loading conveyor which is movable from a raised transport position to a lowered operative position. When in its operative position, an inlet end of the loading conveyor is positioned on the ground in a discharge region of the cutting wheel and is biased into engagement with the ground so as not to bounce up and down in operation but so as to ride over rocks and other obstructions without damaging the conveyor. The cutting wheel is both pivotable and slidable with respect to the vehicle mainframe so as to be capable of cutting trenches of radically different depths while still assuring retrieval of essentially all excavated materials by the loading conveyor.

Attorney, Agent or Firm: Nilles & Nilles, S.C. ;

Primary / Asst. Examiners: Bagnell, David J.;

Maintenance Status: E3 Expired  Check current status

INPADOC Legal Status: Show legal status actions

Family: None

First Claim:
Show all 17 claims
We claim:     1. An excavating machine comprising:
  • (A) a portable chassis;
  • (B) a frame assembly mounted on said chassis and extending longitudinally with respect to said chassis, said frame assembly having a longitudinal end portion;
  • (C) a rock saw assembly mounted on said end portion of said frame assembly, said rock saw assembly comprising a rotary cutting wheel and, in use, being operable to dig a trench and to discharge materials into a discharge region located longitudinally adjacent said cutting wheel, said rock saw assembly being relatively narrow when compared to said frame assembly;
  • (D) a loading conveyor mounted on said frame assembly, said loading conveyor having an inlet end movable from a transport position in which said inlet end is located above the ground to an operative position in which said inlet end rides on the ground in said discharge region, wherein said loading conveyor includes a discharge end and is pivotally mounted on said frame assembly at a pivot axis located longitudinally between said inlet end and said discharge end; and
  • (E) further comprising an actuator, mounted on said frame assembly and connected to said loading conveyor at a location between said inlet and discharge ends, which selectively pivots said loading conveyor about said pivot axis, thereby raising and lowering said inlet end.

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Drawing Descriptions: Show drawing descriptions

Description: Show description

Forward References: Show 15 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (15)   |   Backward references (8)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 6pp US4193636  1980-03 Jakob   Asphalt paving planer with conveyor forwardly of cutting drum
Get PDF - 15pp US4755001  1988-07 Gilbert   Road planar
Get PDF - 16pp US5015120  1991-05 Brock et al.  Barber-Greene Company Methods and apparatus for making an asphalt-aggregate pavement
Get PDF - 11pp US5070632  1991-12 Gilbert  Trencor Jetco, Inc. Trenching machine with laterally adjustable chain-type digging implement
Get PDF - 9pp US5092657  1992-03 Bryan, Jr.   Stratum boundary sensor for continuous excavators
Get PDF - 15pp US5228220  1993-07 Bryan, Jr.   Bucket chain excavator
Get PDF - 6pp US5381616  1995-01 Disney  R. & R. Trench Equipment Limited Rotary rockwheel assemblies
Get PDF - 14pp US5441361  1995-08 Campbell  Astec Industries, Inc. Field convertible apparatus for conducting either front load road planing operation or cold in-place recycling operation
Foreign References:
Publication Date IPC Code Assignee   Title
Get PDF - 20pp EP0087361 1983-08  B62D 55/20 HYDRO ARMOR SARL Machine for cleaning or excavating ditches 
Get PDF - 17pp WO9010752 1990-09  E01C 23/06 BP AUSTRALIA ROAD SURFACE RECYCLER 

Other Abstract Info: DERABS G97-011012 DERG97-011012

Other References:
  • Trencor, Inc., Model 860B Specification (3 pages), undated.
  • Welsh Water Marketing, Bruff Brochure (10 pages), undated.

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