公开(公告)号：US3889231A

公开(公告)日：1975-06-10

申请号：US41015373

申请日：1973-10-26

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： TOSATO LAWRENCE ,  ABEL LEON A ,  MULLIS CLYDE M

IPC: B66B1/50 ,  B66B3/02

CPC classification number: B66B1/50

Abstract: An elevator system including an elevator car mounted for movement in the hoistway of a building to serve the floors therein. Permanent magnets in the hoistway and magnetically responsive translating devices on the elevator car coact to provide signals indicative of car position. Two spaced permanent magnets coact with a single translating device, or two spaced translating devices connected in electrical series coact with a signal permanent magnet, to provide a position signal of useful duration at elevated car speeds.

Abstract translation: 一种电梯系统，包括安装用于在建筑物的井道中移动的电梯轿厢，用于服务其中的楼层。 井道中的永磁体和电梯轿厢上的磁响应平移装置共同提供指示轿厢位置的信号。 两个间隔的永磁体与单个平移装置共同作用，或者以电串联连接的两个间隔开的平移装置与信号永久磁铁共同作用，以提供在升高的轿厢速度下的有用持续时间的位置信号。

公开(公告)号：US3903996A

公开(公告)日：1975-09-09

申请号：US42618073

申请日：1973-12-18

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： BERKOVITZ HARRY ,  TOSATO LAWRENCE

IPC: B66B13/26 ,  E05F15/00 ,  E05F15/20

CPC classification number: B66B13/26 ,  E05F15/43 ,  E05F2015/436 ,  E05Y2800/21 ,  E05Y2900/104

Abstract: A closure system for an entranceway having a door mounted to open and close the entranceway. A perforated sill, in combination with a source of radiant energy provides a plurality of vertical beams of radiant energy spaced across the entranceway. A detector device is mounted to be responsive to at least one of the beams to detect interruption of radiant energy to the detector device by an object in the entranceway. In a preferred embodiment, the source of radiant energy includes energy having a wavelength in the visible spectrum, highlighting the sill as well as forming an operative portion of the object detection function.