Patents in subclass Excavating/Boom-Type
Parent class: Excavating
| Number | Patent title | Issue Date |
|---|---|---|
| 07293374 | Crawler frame for construction machine A crawler frame includes a center frame and right and left track frames disposed at right and left sides of the center frame so as to extend in a back and forth direction, wherein legs for connecting a central frame section of the center... |
11/13/2007 |
| 07293375 | Crawler frame for construction machine In a crawler frame in which legs in a center frame are formed from cast steel, a simple structure is achieved by reducing the number of components. To this end, the crawler frame, which has a center frame composed of a central frame... |
11/13/2007 |
| 07152349 | Dragline bucket rigging and control apparatus A large electric dragline having a housing (35) and boom (37) is provided with spaced apart in-line sheaves (34) and (36) at boom point to separate hoist ropes (31) and (32) which are led to the front and rear of bucket (30) respectively.... |
12/26/2006 |
| 06910544 | Work machine arrangement In the operation of work machines of the type having an extensible arm, the maximum reach of the arm for a given work machine is limited by such factors as the vehicle's weight, body size and engine placement. The present invention... |
06/28/2005 |
| 06718661 | Boom A new and improved appliance boom having opposite ends. One of the ends is adapted to be secured to the bucket of an articulated powered bucket loader. The other end is adapted to be secured to an appliance. The boom has means for guiding... |
04/13/2004 |
| 06240661 | Method and apparatus for replacing internal splines in a power mining shovel drive train A power mining shovel including a drive train drivingly connected to ground-engaging device, the drive train including a drive train shaft, and a disc brake apparatus operably connected to the drive train shaft for selectively preventing... |
06/05/2001 |
| 06185847 | Continuous shovel The present invention discloses a method and apparatus for excavating material from a mining or reclamation operation, and is generally considered useful in open cast mining operations. The apparatus has a first conveyor and a second... |
02/13/2001 |
| 6152656 | Material delivery system A material delivery system conveys material from a supply location at or above an area surface to a working location below the area surface. The delivery system includes a supply hopper located at the supply location and having an inlet... |
11/28/2000 |
| 6067734 | Dragline walking mechanism with improved planetary transmission A dragline comprising a main housing, a moving mechanism for moving the main housing over the ground, and a planetary transmission driving the moving mechanism, the planetary transmission including a transmission housing, a sun gear, a... |
05/30/2000 |
| 5970636 | Dump block An integral dump block for use in a dragline bucket that comprises a sheave to movably support a dump line, a central pin rotatably supporting the sheave, and a housing to couple the pin to lift lines. Bearings are disposed within the... |
10/26/1999 |
| 5642577 | Dragline with high headroom between upper and lower structures Heavy machinery comprising a lower support structure having an upper surface, and an upper structure having a generally horizontal lower surface facing the upper surface of the lower structure, the upper structure being supported above... |
07/01/1997 |
| 5636459 | Dragline including improved boom A dragline comprising a main housing, a bucket hoist mechanism mounted on the housing, a bucket drag mechanism mounted on the main housing, a moving mechanism for moving the main housing over the ground, a boom having upper and lower ends... |
06/10/1997 |