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APPAREIL D'ATTELAGE A USURE REDUITE
专利权人:
POWER PIN INC.
发明人:
OLSON, BRIAN R.
申请号:
CA2776026
公开号:
CA2776026C
申请日:
2012.04.27
申请国别(地区):
CA
年份:
2014
代理人:
摘要:
An implement hitch tongue apparatus has a nodular cast iron tongue member defining a vertical drawpin hole. A bottom recess is defined in a bottom surface of the tongue member forward of the drawpin hole, and a pin hole recess is defined in a front portion of the drawpin hole. The recesses are filled with hard surfacing welding electrode material by welding with a hard surfacing welding electrode. A grease conduit can provide grease to the bottom surface of the tongue member. A solid one-piece ball insert member can be removably installed in the drawpin hole instead of hard surfacing. The ball insert can provide different drawpin hole sizes, and can extend down below the tongue to support the tongue weight on the ball insert with the ball insert rotating with respect to the tongue during turns.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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