|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||248/2058 ; 248/2062|
|§371/§102 date||19931116 (19931116)|
|발명자 / 주소|
|인용정보||피인용 횟수 : 10 인용 특허 : 0|
A holding device having a flexible diaphragm, a central pin embedded in the flexible diaphragm, a pressure ring in contact with a periphery of the diaphragm and a mechanism for lifting the central pin with respect to the pressure ring. The diaphragm has a plurality of cams circumferentially disposed about the diaphragm. An inside surface of a wall of the pressure ring has recesses which mate with the cams and connect the diaphragm with the pressure ring thereby securing the diaphragm against relative rotation with respect to the pressure ring and allowin...
In a holding device having a flexible diaphragm (1), a central pin (10) embedded in the diaphragm (1), a pressure ring (2) positioned on a circumferential area of the diaphragm (1), and means for lifting the central pin (10) with respect to the pressure ring (2), the improvement comprising: the diaphragm (1) having a plurality of cams (13) circumferentially arranged about the diaphragm (1), an inside surface of a wall (21) of the pressure ring (2) having a plurality of recesses (22) which engage the cams (31) and connect the diaphragm (1) with the pressu...