公开(公告)号：USD404137S

公开(公告)日：1999-01-12

申请号：US76255

申请日：1997-09-03

Applicant: Ronald E. Underwood ,  William E. Fitzpatrick ,  Aiden John Petrie

Designer： Ronald E. Underwood ,  William E. Fitzpatrick ,  Aiden John Petrie

公开(公告)号：US4449304A

公开(公告)日：1984-05-22

申请号：US460150

申请日：1983-01-24

Applicant: Ronald E. Underwood

Inventor： Ronald E. Underwood

IPC: B43L13/04 ,  B43L13/08 ,  B43L5/02 ,  B43L13/14

CPC classification number: B43L13/048 ,  B43L13/08

Abstract: A drawing instrument and locking apparatus therefor in which the locking apparatus can be made of polyethylene, polypropylene or the like and is not subject to fragmentation or permanent damage during normal use. A displaceable member of the locking apparatus is displaceable into a groove of a drawing board to lock the drawing instrument in position thereon. An outer ring member freely rotatable through 360 degrees around the displaceable member when the displaceable member is in its raised condition engages the displaceable member when the displaceable member is in its depressed condition upon rotation of the ring member to unlock the apparatus.

Abstract translation: 一种拉伸仪器及其锁定装置，其中锁定装置可以由聚乙烯，聚丙烯等制成，并且在正常使用期间不会破碎或永久损坏。 锁定装置的可移位构件可移动到绘图板的凹槽中，以将绘图装置锁定在其上。 当可移动构件处于其升高状态时，围绕可移位构件可自由旋转360度的外环构件在可移动构件在环构件旋转时处于其凹陷状态时与可移位构件接合以解锁设备。