| US 7,464,641 B2 | ||
| Stack fastening device | ||
| Dong Woo Kang, Daejeon (Korea, Republic of); In Gab Jang, Daejeon (Korea, Republic of); Jong Seung Park, Daejeon (Korea, Republic of); and Tae Won Lee, Daejeon (Korea, Republic of) | ||
| Assigned to Doosan Heavy Industries & Construction Co., Ltd., Gyeongsangnam-Do (Korea, Republic of) | ||
| Filed on Dec. 28, 2007, as Appl. No. 11/966,292. | ||
| Claims priority of application No. 10-2006-0137686 (KR), filed on Dec. 29, 2006. | ||
| Prior Publication US 2008/0159842 A1, Jul. 03, 2008 | ||
| Int. Cl. B30B 15/04 (2006.01); B30B 15/06 (2006.01); H01M 2/00 (2006.01) | ||
| U.S. Cl. 100—219 [100/99; 100/220; 100/247; 100/269.01; 100/290; 429/34; 429/37] | 6 Claims |
| 1. The wording, “including a base on an upper surface of which a stack is loaded, a compression plate which has a flat configuration
and is placed over the stack to press the stack, and a plurality of vertical beams which are installed on the base to extend
vertically, so that the upper end portion of the beams projects out through the edge of the compression plate, wherein a thread
is formed on an upper end portion of each vertical beam, nuts are threadedly coupled to the thread such that the nuts can
be tightened against upper and lower surfaces of the compression plate, and engagement grooves are defined on the upper surface
of the compression plate so that a head of a hydraulic cylinder can be coupled to the compression plate” have been deleted
and replaced with the following paragraphs:
comprising:
a detachable hydraulic unit;
a base having an upper surface on which a stack is loaded;
a compression plate which has a flat configuration and is placed over the stack to press the stack;
a plurality of vertical beams which are installed on the base to extend vertically, wherein an upper end portion of each of
the beams projects out through the edge of the compression plate, a thread is formed on the upper end portion of each of the
vertical beams, the thread of each of the vertical beams is configured to receive the detachable hydraulic unit, a plurality
of nuts are threadedly coupled to the thread of each of the vertical beams, some of the nuts of each of the vertical beams
are positioned above the compression plate and the other of the nuts of each of the vertical beams is positioned below the
compression plate such that the nuts can be tightened against upper and lower surfaces of the compression plate, and
a plurality of engagement grooves which are formed on the upper surface of the compression plate, said engagement grooves
are configured to receive a plurality of coupling members of a head of a hydraulic cylinder of the detachable hydraulic unit.
|