Caterpillar Tractor Co.

Robert J Trayler

Gary P Freese

Eugene M Wilson

Roger R Mitchell

A slide rail assembly (18) and slide plate (20) are used, for example, to position an implement (14) of a work vehicle (10), such as a bulldozer (14), at various angles. The bulldozer connected slide plate (20) moves along a vehicle connected rail (22) of the rail assembly (18) to a desired position of the bulldozer (14). A pin (50) is positioned through openings (48,52) in the rail (22) and slide plate (20) to maintain the position. The pin (50) or rail (22) can sometimes fail owing to working loads exerted on the bulldozer (14). Support members (54) each having pin receiving openings (56) in register with respective rail openings (48) are connected to the rail assembly (18) to increase bearing support area of the pin (50) and to strengthen the rail assembly (18). The support members (54) also each have openings (58) aligned with openings (44,46) in the rail assembly (18) for relief of material packed into the rail (22) and into the pin receiving openings (48,56).

Slide rail assembly for a work vehicle

PCT No. PCT/US79/00927 Sec. 371 Date Nov. 1, 1979 Sec. 102(e) Date Nov. 1, 1979 PCT Filed Nov. 1, 1979 An earthmoving scraper has a pivoting floor which pivots from a closed position to an open position to dump and spread material previously loaded into the bowl of the scraper. Various types of earth being loaded and spread require different dump openings of the pivoting floor and varying heights of the strikeoff blade which spreads the dumped earth. Heretofore, it has been difficult for the operator of the earthmoving scraper to selectively position the pivoting floor and strikeoff blade to insure a specific dump opening and a specific height of the earth material as it is spread. The present invention provides a switch (36) for controlling the hydraulic cylinder (34) which positions the pivoting floor (26), a switch actuator (66), and a plurality of mounting positions for the switch actuator (66), thereby selectively controlling the dump opening of the pivoting floor (26) and the height of the strikeoff blade (27).

Apparatus for controlling the position of the pivoting floor and

PCT No. PCT/US 78/00250 Sec. 371 Date Dec. 21, 1978 Sec. 102(e) Date Dec. 21, 1978, PCT Filed Dec. 12, 1978, Ser. No. 014,018, PCT Pub No. W080/01296 PCT Pub. Date Jun. 26, 1980. A slide rail assembly (18) and slide plate (20) are used, for example, to position an implement (14) of a work vehicle (10), such as a bulldozer (14), at various angles. The bulldozer connected slide plate (20) moves along a vehicle connected rail (22) of the rail assembly (18) to a desired position of the bulldozer (14). A pin (60) is positioned through aligned openings (48,62) in the rail (22) and slide plate (20) to maintain the position. The pin (60) or rail (22) can sometimes fail owing to working loads exerted on the bulldozer (14). A plurality of bushings (50) are each positioned in a respective rail opening (48) and maintained substantially fixed in order to increase bearing support area of the pin (60) and to strengthen the rail assembly (18).

A bulldozer assembly comprises a C-frame pivotally connected on a forward end of a tractor and a blade universally connected on a forward end of the frame by a ball and socket connection. A pair of laterally spaced push arms have forward ends thereof universally connected to the blade and rearward ends thereof adjustably mounted on the frame for selectively angling the blade relative to the frame. Prior to such angling, a vertically disposed pin is inserted in the ball and socket connected to prevent tipping of the blade relative to the frame.

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Braidwood, IL, United States of America

Robert J Trayler