Patents by Inventor John C. Lehman

John C. Lehman 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: 10405723
    Abstract: A surface maintenance machine comprising a body having a forward section, a middle section and a rearward section, wherein the forward section is positioned to the front of a transverse centerline of the machine, the middle section is generally centered on the transverse centerline and a rearward section positioned to the rear of the transverse centerline. A storage chamber can be defined in the middle section and enclosed by a front wall, a rear wall, lateral walls, a generally planar top surface, and a generally planar lower surface, such that the storage chamber is generally isolated from components of the surface maintenance machine. The storage chamber can have a storage chamber bottom surface with or below a top surface of at least one battery positioned in the forward section.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 10, 2019
    Assignee: Tennant Company
    Inventors: John C. Ickes, Martin L. Dickrell, Ronald W. Lehman, Kyle D. Sedam, Jacob L. Stock
  • Patent number: 4296984
    Abstract: To greatly increase the storage capacity of cabinets and to efficiently utilize the corner space in such cabinets and to render frequently-used stored articles more readily accessible, a prefabricated modular or unitized storage conveyor apparatus is installed with only minor modification of existing or newly manufactured cabinets. Adjacent building space customarily wasted can receive portions of the storage conveyor unit. Simplicity, economy of manufacturing, and reliability of operation are featured in the conveyor mechanism.
    Type: Grant
    Filed: November 6, 1979
    Date of Patent: October 27, 1981
    Assignee: John C. Lehman, Inc.
    Inventor: John C. Lehman
  • Patent number: 4191435
    Abstract: To greatly increase the storage capacity of cabinets and to efficiently utilize the corner space in such cabinets and to render frequently-used stored articles more readily accessible, a prefabricated modular or unitized storage conveyor apparatus is installed with only minor modification of existing or newly manufactured cabinets. Adjacent building space customarily wasted can receive portions of the storage conveyor unit. Simplicity, economy of manufacturing, and reliability of operation are featured in the conveyor mechanism.
    Type: Grant
    Filed: March 3, 1978
    Date of Patent: March 4, 1980
    Assignee: John C. Lehman, Inc.
    Inventor: John C. Lehman