公开(公告)号：US10054480B2

公开(公告)日：2018-08-21

申请号：US15318600

申请日：2014-06-26

Applicant: A&D COMPANY, LIMITED

Inventor： Naoto Izumo ,  Satoshi Suzaki

IPC: G01G21/24 ,  G01G23/00

CPC classification number: G01G23/005 ,  G01G21/24 ,  G01G21/244 ,  G01G23/01 ,  G01G23/02

Abstract: Provided is a mass sensor including a four-corner-adjusting-mechanism capable of reducing the sensitivity of four-corner adjustment without reducing the rigidity of a Roberval mechanism. A mass sensor (1) includes a Roberval mechanism (2) in which a floating frame (21) and a fixing frame (22) are connected by upper and lower sub-frames (23, 24) having thin portions (23b) formed thereon, and a four-corner-adjusting-mechanism (4) to perform parallelism adjustment. The four-corner-adjusting-mechanism (4) includes an adjusting screw (41), and an upper elastic member (42u) and a lower elastic member (42d) disposed in series in the vertical direction so as to sandwich the sub-frame (23) to be subjected to parallelism adjustment.

公开(公告)号：US10126161B2

公开(公告)日：2018-11-13

申请号：US15557668

申请日：2015-03-26

Applicant: A&D COMPANY, LIMITED

Inventor： Naoto Izumo ,  Satoshi Suzaki

IPC: G01G21/00 ,  G01G23/00 ,  G01G21/23 ,  G01G23/02 ,  G01G21/22 ,  G01G21/28

Abstract: Provided is an overload prevention mechanism having a structure that protects a weight sensor with a floating action and ensuring the reproducibility of the return position of the weight sensor. The overload prevention mechanism has a resilient member that is interposed between the weight sensor and the case, supports the weight sensor in a pressing manner against the case, and when a certain plate load or greater is imposed causes the weight sensor to separate from the case and thereby be released from the load, a guide member that is arranged in a standing manner between the weight sensor and the case, and a guide receiving seat that is provided in the weight sensor or the case and engages with the guide member.