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是锁上面的专利
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United States Patent 6,264,252 Clancy July 24, 2001 Multi-point sliding door latch AbstractA multi-point sliding door latch adapted to be fitted in a single opening in the lock face of the stile of the sliding door and arranged for coaction with a keeper structure on an associated jamb and for coaction with a handle assembly mounted on the stile of the sliding door and including a tail member operated by a thumb turn or a key lock. The latch includes a unitary hollow housing sized to fit in the stile opening, a pair of vertically spaced upper and lower hooks each pivotally mounted in the housing for movement between a retracted unlatched position within the hollow of the housing and an extended latch position extending out of the hollow of the housing for latching coaction with the keeper structure; upper and lower pivot arms pivotally mounted in the housing in vertically spaced side-by-side relation between the upper and lower hooks and each adapted to receive a tail member of the handle assembly; a gang link connecting the upper and lower pivot arms so that pivotal movement of one pivot arm generates corresponding pivotal movement of the other pivot arm; an upper link interconnecting the upper pivot arm and the upper hook; and a lower link interconnecting the lower pivot arm and the lower hook. Inventors: Clancy; John M. (Clawson, MI) Appl. No.: 09/170,178 Filed: October 13, 1998 United States Patent 5,820,170 Clancy October 13, 1998 Multi-point sliding door latch （美国已授权专利）AbstractA multi-point sliding door latch adapted to be fitted in a single opening in the lock face of the stile of the sliding door and arranged for coaction with a keeper structure on an associated jamb and for coaction with a handle assembly mounted on the stile of the sliding door and including a tail member operated by a thumb turn or a key lock. The latch includes a unitary hollow housing sized to fit in the stile opening, a pair of vertically spaced upper and lower hooks each pivotally mounted in the housing for movement between a retracted unlatched position within the hollow of the housing and an extended latch position extending out of the hollow of the housing for latching coaction with the keeper structure; upper and lower pivot arms pivotally mounted in the housing in vertically spaced side-by-side relation between the upper and lower hooks and each adapted to receive a tail member of the handle assembly; a gang link connecting the upper and lower pivot arms so that pivotal movement of one pivot arm generates corresponding pivotal movement of the other pivot arm; an upper link interconnecting the upper pivot arm and the upper hook; and a lower link interconnecting the lower pivot arm and the lower hook. Inventors: Clancy; John M. (Clawson, MI) Assignee: Sash Controls, Inc. (Ferndale, MI) Appl. No.: 08/786,667 Filed: January 21, 1997
美国的专利吧？可通过如下链接查询：http://patft.uspto.gov/netahtml/PTO/srchnum.htm 在框框里输入专利号码（下面有输入示例可参照的），数字之间可以没有标点的。前一个: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6264252.PN.&OS=PN/6264252&RS=PN/6264252 后一个:http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5820170.PN.&OS=PN/5820170&RS=PN/5820170点击上述网页中的images按钮,可以看image档,里面有图片，不过image要一页一页地打开并可以下载。
美国的专利吧？可通过如下链接查询：http://patft.uspto.gov/netahtml/PTO/srchnum.htm 在框框里输入专利号码（下面有输入示例可参照的），数字之间可以没有标点的。前一个: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6264252.PN.&OS=PN/6264252&RS=PN/6264252 后一个:http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5820170.PN.&OS=PN/5820170&RS=PN/5820170点击上述网页中的images按钮,可以看image档,里面有图片，不过image要一页一页地打开并可以下载。