Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8136272 | Dipper door latch with locking mechanism A dipper including a dipper door and an impact actuated jaw having a āCā shape defining a lip and a chin. The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw i... | 03/20/2012 |
| 7369978 | Process for three-dimensional modeling and design of off-highway dump bodies A method of loading material into a dump body of a truck using a loading bucket whose volumetric capacity is approximately ā or more than that of the dump body is provided. The dump body having side walls that are spaced relatively wider than conventional dump bod... | 05/06/2008 |
| 7360327 | Material moving pusher/bucket A pusher/bucket has back plate with wings pivotably mounted at either end, and a drop blade pivotably mounted thereto. The drop blade can be secured in a raised position where it is superimposed over the back plate; when in the raised position, the wings can be posi... | 04/22/2008 |
| 7356949 | Scraping device and a system and a method for collecting materials A scraping device, a system and a method for collecting a material are provided. The scraping device may have a bowl having a first end and a second end. A lip may be positioned at the first end and may cover an opening at the first end. In an embodiment, direct mou... | 04/15/2008 |
| 7096610 | Dipper assembly including a closure mechanism A dipper assembly includes a dipper, a dipper door, ands a closure mechanism. The dipper door is pivotally linked relative to the dipper, and has a closed position in which the dipper door closes the open bottom. The closure mechanism has a lock position and an unlo... | 08/29/2006 |
| 6938365 | Dampening apparatus A dampening means for a tool, the dampening means controlling pivoting of the tool with respect to a support means of a support structure. ... | 09/06/2005 |
| 6910289 | Scraping device and a system and a method for collecting materials A scraping device, a system and a method for collecting a material are provided. The scraping device may have a bowl having a first end and a second end. A lip may be positioned at the first end and may cover an opening at the first end. In an embodiment, direct mou... | 06/28/2005 |
| 6591521 | Dipper door and dipper door assembly A dipper assembly includes a dipper having an open bottom and forward end, and a door pivotally linked to the dipper. The dipper bottom is defined by dipper wall bottom edges. The door has a bottom wall and side walls which extend above the bottom wall to... | 07/15/2003 |
| 6467202 | Dynamically active dipper door mechanism A dipper door pivotally mounted to a dipper is controlled as it pivots between open and closed positions. In one embodiment, the door is controlled by a brake pivotally linking the door to the dipper. In another embodiment, the door is pivotally mounted t... | 10/22/2002 |
| 6301809 | Material handling system for powered digging apparatus An implement for use with a bucket mounted to a dipper boom of an earth working machine wherein the implement includes bars slidable mounting within guide elements mounted to the dipper boom such that the bars may be moved by gravity from a first position... | 10/16/2001 |
| 6219946 | Power shovel with dipper door snubber and/or closure assembly Power shovels include a dipper door which must be held shut to retain a load of material within a dipper and which must be allowed to open to discharge the load of material from the dipper. Such dipper doors are extremely heavy and, as a result, the openi... | 04/24/2001 |
| 5974705 | Snubber for excavator bucket door A Snubber is used to damp the swing of the door on an excavator bucket to prevent the door form being damaged by repeatedly slamming shut. The snubber has housing which mounts to an excavator bucket and a shaft pivotally mounted in the housing and connect... | 11/02/1999 |
| 5815960 | Retarding mechanism for the dipper door of a mining shovel Disclosed is a digging implement such as a mining shovel dipper which has a body, a movable door mounted with respect to the body and a mechanism for retarding swinging movement of the door. The mechanism includes first and second housings and plural reta... | 10/06/1998 |
| 5735067 | Snubber for excavator bucket door A Snubber is used to damp the swing of the door on an excavator bucket to prevent the door form being damaged by repeatedly slamming shut. The snubber has housing which mounts to an excavator bucket and a shaft pivotally mounted in the housing and connect... | 04/07/1998 |
| 5619811 | Bucket equipped with grinding and loosening device The invention relates to a device for handling material, especially soil, the device including a bucket (1) of a machine having a grinding device (2) for the material fitted thereto, the grinding device comprising at least two essentially parallel shafts ... | 04/15/1997 |
| 5613308 | Door brake A door brake assembly (20) to control the closing of a dipper door (11) on a shovel dipper (10) has a torsion bar (39) connected to the dipper door (11) by links (15, 32). A lever (48) on the other end of the torsion bar (39) selectively engages spaced sn... | 03/25/1997 |
| 5581916 | Excavating, sieving and grading device for working crawler Disclosed is an excavating, sieving and grading device for a working crawler arranged such that each pair of first and second right and left legs 14, 14a and 17, 17a are vertically disposed to a bucket main body 7, the first right and left legs are connec... | 12/10/1996 |
| 5499463 | Power shovel with variable pitch braces A power shovel comprising a frame, a dipper handle mounted on the frame for pivotal movement relative thereto about a generally horizontal dipper handle axis such that the dipper handle has a variable pivotal position relative to the frame, a dipper conne... | 03/19/1996 |
| 5416990 | Excavation bucket An excavation bucket with a scoop provided at a bottom portion of the bucket to provided fine digging and grading of materials or trenches. The excavation bucket is particularly useful for digging trenches near utilities and finishing trenches at proper g... | 05/23/1995 |
| 4089431 | Bucket with reduced dumping width A loader, including a vehicle frame, lift arms mounted on the frame for movement between upper and lower positions, and a bucket having a bottom, a rear and spaced sides, said bottom and sides defining a dumping opening, the bucket being mounted on the li... | 05/16/1978 |
| 4006832 | Bucket door snubber Apparatus for dampening the closing of a heavy door of the type mounted along a hinge axis on a heavy movable member such as a digging bucket for a shovel, said dampening apparatus comprises a crank pivotally mounted intermediate its ends on said movable ... | 02/08/1977 |
| 3998341 | Public works machine equipped with a bucket unloading device This invention relates to a public works machine equipped with a bucket unloading device. According to the invention, this device comprises an endless member mounted for movement or translation along the jib and comprising blades, a chute disposed under t... | 12/21/1976 |
