Patents by Inventor David F. Tennent

David F. Tennent 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).

  • Machine for inserting elongated cylindrical objects into mailing receptacles
    Patent number: 4669633
    Abstract: A machine for the insertion of elongated cylindrical objects into a rapidly moving stream of envelopes at a rate of delivery equal to that of the basic machine. The invention comprises a supply hopper for the objects, a trough to feed the objects to a delivery station and a horizontally reciprocating assembly which takes one object at a time from the trough and feeds it into an open envelope. This assembly is operated by the basic machine and so feeds the objects at whatever rate the basic machine is moving the open envelopes past the insertion stations.
    Type: Grant
    Filed: September 12, 1984
    Date of Patent: June 2, 1987
    Inventor: David F. Tennent