KIRK A KNOWLTON
Optometry in Worcester, MA
License number
Massachusetts 4952
Issued Date
Jul 10, 1991
Expiration Date
Sep 28, 2017
Type
Dispensing Optician
Address
Address
Worcester, MA 01602
Professional information
Coupling For A Snow Plow
US Patent:
5111603, May 12, 1992
Filed:
Aug 29, 1990
Appl. No.:
7/574660
Inventors:
Leland P. Knowlton - Worcester MA
Kirk A. Knowlton - Worcester MA
Kirk A. Knowlton - Worcester MA
International Classification:
E01H 504
US Classification:
37231
Abstract:
A coupling for a plow which includes push beam which is attachable to the front of a vehicle and a supporting frame which is attachable to the back side of the plow. The push beam has at least one forwardly extending arm at each end of the beam and a transversely extending connecting pin for each arm. The supporting frame has a pair of rearwardly extending arms. The coupling also includes a slotted mounting tab which is attached to the rearward end of each rearwardly extending arm for receiving the pins and a retaining rod which is removably attached to the tabs for blocking the downward movement of the forwardly-extending arms and preventing the pins from moving out of the slots in the tabs.