Patents by Inventor Darwin Robert Keiper

Darwin Robert Keiper has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6860044
    Abstract: A blade attachment that can be attached to an excavator or backhoe in 10 seconds and removed in 3 seconds from the operator's seat without the need for tools, nuts, bolts, pins, chains, hoses or additional personnel. The blade attachment is secured to the bucket with two u-shaped adaptors welded to the inside of the bucket. The blade has opposing brackets which support a grab bar and adjustable striker bar, allowing it to be installed on numerous buckets without modification, and providing for quick removal. The design of the bucket adaptors and striker bar prohibits the blade from being removed during earth moving and grading operations, but allows the operator to maintain a level grade when the machine is sitting on as much as a 10% grade difference.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: March 1, 2005
    Inventor: Darwin Robert Keiper
  • Publication number: 20040181978
    Abstract: A blade attachment that can be attached to an excavator or backhoe in 10 seconds and Removed in 3 seconds from the operators seat without the need of: tools, nuts, bolts, pins, chains, hoses or additional personnel. Said attachment is secured to the bucket by the means of two special u-shaped adaptors welded to the inside of the bucket. The blade having opposing brackets which support a grab bar and adjustable striker bar, allowing it to be installed on numerous buckets without modification of attachment or bucket allowing it to be removed quickly. The design of the bucket adaptors and striker bar allows it to be removed quickly. The design of the bucket adaptors and striker bar prohibits the blade from being removed during earth moving, and grading operations but allows the operator to maintain a level grade, when the machine is sitting on as much as a 10% grade difference. Said blade is of a size equal too 2 to 3 times the bucket width.
    Type: Application
    Filed: March 17, 2003
    Publication date: September 23, 2004
    Inventor: Darwin Robert Keiper