Clamp for rod rotator
Latest Robbins & Myers Energy Systems L.P. Patents:
Description
Claims
The ornamental design for a clamp for rod rotator, as shown and described.
Referenced Cited
U.S. Patent Documents
977802 | December 1910 | Jensen |
3914871 | October 1975 | Wolff |
D282715 | February 25, 1986 | Manning |
D318409 | July 23, 1991 | Garrett |
D393998 | May 5, 1998 | Anderson |
6023800 | February 15, 2000 | Stickley |
6279861 | August 28, 2001 | Nolan |
D471794 | March 18, 2003 | Wall |
D484991 | January 6, 2004 | Davies et al. |
D525862 | August 1, 2006 | Wall |
D583640 | December 30, 2008 | Gilham |
D616276 | May 25, 2010 | Friegang |
Patent History
Patent number: D643281
Type: Grant
Filed: Dec 28, 2010
Date of Patent: Aug 16, 2011
Assignee: Robbins & Myers Energy Systems L.P. (Willis, TX)
Inventor: Eric Clifton Roberts (Fritch, TX)
Primary Examiner: Celia Murphy
Assistant Examiner: John Windmuller
Attorney: Browning Bushman P.C.
Application Number: 29/382,010
Type: Grant
Filed: Dec 28, 2010
Date of Patent: Aug 16, 2011
Assignee: Robbins & Myers Energy Systems L.P. (Willis, TX)
Inventor: Eric Clifton Roberts (Fritch, TX)
Primary Examiner: Celia Murphy
Assistant Examiner: John Windmuller
Attorney: Browning Bushman P.C.
Application Number: 29/382,010
Classifications
Current U.S. Class:
D8/394;
D8/72