Patents by Inventor David M. Strange

David M. Strange 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: 7258223
    Abstract: A conveyor using a drive chain to drive pallets along a closed loop path on a track lying in a horizontal plane through inside and outside turns so that the conveyor may transport parts along non aligned stations. An advance and a return run extend parallel to each other and are closely spaced to minimize the floor space required. The drive chain is engaged by two spaced apart sprockets engaging a respective side of the drive chain, the sprockets mounted to the pallet on a pivoted bar spring biased to urge the sprocket teeth into engagement with the chain. The sprocket bar is pivotally mounted to one end of the swing bar which has an opposite end connected to the pallet to allow the chain and pallet to move together along the track and negotiate inside and outside turns. The chain is guided in a chain guide channel through inside turns, and on sprockets around the outside turns.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: August 21, 2007
    Assignee: Roberts-Sinto Corporation
    Inventor: David M. Strange