Patents Represented by Attorney Schweitzer Cornman Gross & Bundell LLP
  • Patent number: 7533762
    Abstract: A lift has a lift cage movable in a lift shaft and is connected with a counterweight by means of at least one support means. The lift cage or counterweight moves by means of at least one drive means separate from the support means. One end of the drive means engages the upper end of the counterweight, is guided by way of a drive pulley and by way of a deflecting roller, and engages at its other end with the lower end of the counterweight. A drive unit drives the drive pulley. The drive means consists of a drive part and a tension part of different characteristics, wherein the drive and tension parts are connected by means of a drive means connection.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: May 19, 2009
    Assignee: Inventio AG
    Inventors: Heinrich Kuttel, Danilo Peric