Patents by Inventor Carl B. Derr

Carl B. Derr 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: 4497264
    Abstract: There is combined with a hand pushable seeder of a type with a pair of wheels and an adjustable furrow-forming ground opener means disposed to traverse only a single common dispensing track aligned therewith a side dressing fertilizer dispenser with its own fertilizer-receiving hopper attached upon the frame of the seeder so that a fertilizer dispensing chute of the hopper is disposed to dispense the fertilizer behind the ground opener and along the single common track traversed by the wheels propelled alongside can thus dispense fertilizer alongside young growing plants germinating from seeds dispensed by the same seeder many weeks before.
    Type: Grant
    Filed: November 4, 1982
    Date of Patent: February 5, 1985
    Assignee: Earthway Products, Inc.
    Inventors: Kenneth J. Pickett, Carl B. Derr
  • Patent number: 4079788
    Abstract: A hand-pushable, tilling device includes a main frame carrying ground-engaging front and rear wheels, handle means on the frame and a selection of tilling tools, including at least a furrow-forming tool and a cultivating tool, each having a shank portion terminating in a transversely extending soil-penetrating projection. The main frame includes a tool-holding frame supported for pivotal movement about a lateral, horizontal axis. In the uppermost position of the tool-holding frame, the latter frame presents a generally horizontally extending recess into which the shank portion of either tool is slidably mountable and locked preferably by a spring-urged latching means. The depth of penetration and the angle of penetration of the soil-penetrating projecting portion of the selected tool is varied preferably by screw means passing through a support member pivoted on a lateral, horizontal axis upon the main frame and secured to a pivoted second support member attached to the tool-holding frame.
    Type: Grant
    Filed: February 12, 1976
    Date of Patent: March 21, 1978
    Assignee: Esmay Products, Inc.
    Inventor: Carl B. Derr