Five mechanical, one chemical and two electrical inventions by Utah inventors resulted in patents granted by the U.S. Patent Office.

Philip McDonald and Newel Kimball, both of Salt Lake City. A shoulder-mounted traction apparatus. Filed Nov. 9, 1989. Patent 4,987,886.Gary L. Evertsen, Ogden. A towing vehicle positioning aid for joining a vehicle hitching ball to a trailer mounted socket. Filed April 10, 1989. Patent 4,988,116.

Paul K. Gines, Bountiful. Extended reach shuttle. Assigned to Eaton Corp., Cleveland, Ohio. Filed July 24, 1989. Patent 4,988,262.

Robert G. Coucher, Salt Lake City. Reaction furnace. Assigned to Custom Equipment Corp., Salt Lake City. Filed Feb. 26, 1990. Patent 4,988,289.

Leon E. Paulos; Thomas D. Rosenberg, both of Salt Lake City, and Randall D. Ross, Largo, Fla. Washer for use with cancellous screw for attaching soft tissue to bone. Assigned to Concept Inc., Largo, Fla. Filed Jan. 6, 1989. Patent 4,988,351.

Robert B. Wardle and Jerald C. Hinshaw, both of Logan. A method of polymerizing a cyclic ether monomer that is capable of cationic polymerization. Assigned to Thiokol Corp., Ogden. Filed March 14, 1989. Patent 4,988,797.

Kevin Ostler, Salt Lake City. A laser resonator that compensates for temperature variation. Assigned to Ion Laser Technology, Salt Lake City. Filed Feb. 12, 1990. Patent 4,989,217.

Richard C. Woodbury, Raymond R. Perkins, James M. Thorne and Larry V. Knight, all of Provo. A device for directing electromagnetic radiation having layers with surface curvature. Assigned to Brigham Young University, Provo. Filed Oct. 23, 1989, a division of application Aug. 21, 1987. Patent 4,989,226.

Copies of patents are available by number for $1.50 from Box 9, Patent and Trademark Office, Washington DC 20231.