Patents by Inventor David W. Harrah

David W. Harrah 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: 5375286
    Abstract: A quick-release connector for connecting a handle to a mop head or the like comprises a first section for attachment to the handle and a second section for attachment to the mop head. The first section has a plurality of receptacles which mate with a similar plurality of bayonet projections in the second section. At least one of the bayonet projections is resiliently flexible and flexes outward when the first and second sections are pushed together so as to mate with and be securely gripped by an indentation in the first section providing a positive interlock between the sections. Another of the bayonet projections is a rigid, longer bayonet which acts as a guide when the two sections are connected together. The first section also has a polygon-shaped, shallow recess which mates with a similar polygon-shaped protrusion in the second section when the two sections are pushed together to provide resistance to torsional stress.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: December 27, 1994
    Assignee: QRC Partnership
    Inventor: David W. Harrah
  • Patent number: 5207754
    Abstract: A quick-release connector for connecting a handle to a mop head or the like comprises a first section for attachment to the handle and a second section for attachment to the mop head. The first section has a plurality of receptacles which mate with a similar plurality of bayonet projections in the second section. At least one of the bayonet projections is resiliently flexible and flexes outward when the first and second sections are pushed together so as to mate with and be securely gripped by an indentation in the first section providing a positive interlock between the sections. Another of the bayonet projections is a rigid, longer bayonet which acts as a guide when the two sections are connected together. The first section also has a polygon-shaped, shallow recess which mates with a similar polygon-shaped protrusion in the second section when the two sections are pushed together to provide resistance to torsional stress.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: May 4, 1993
    Assignee: FLC, Inc.
    Inventor: David W. Harrah