(19)

(11)

EP 2 707 564 A1

(12)

(43) Date of publication: 19.03.2014 Bulletin 2014/12 (21) Application number: 11721408.0 (22) Date of filing: 13.05.2011

(51) International Patent Classification (IPC):  E06B 9/06(2006.01) (86) International application number: PCT/US2011/036477 (87) International publication number: WO 2012/158147 (22.11.2012 Gazette 2012/47)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (71) Applicant: Hufcor, Inc. Janesville, WI 53545 (US)	(72) Inventor: WILLIAMS, Charles Janesville, WI 53545-0956 (US) (74) Representative: Kenrick, Mark Lloyd  Marks & Clerk LLP 1 New York Street Manchester, M1 4HD Manchester, M1 4HD (GB)