Patents by Inventor Hans Elsener

Hans Elsener has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Inspection opening in an elevator car
    Patent number: 6739432
    Abstract: An elevator car is of a construction which facilitates inspection and maintenance function while enhancing passenger safety. The car includes a closeable inspection and maintenance opening in a sidewall. A transparent inspection window or an inspection grille forms a closure for the opening. The closure may be lockable, and can also include a sensor to monitor its state.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: May 25, 2004
    Assignee: Inventio AG
    Inventor: Hans Elsener
  • Elevator without a machine room
    Patent number: 6691833
    Abstract: An elevator has a car that moves along at least one guiderail in a hoistway and the car is supported by at least one suspension rope that is driven by a drive unit. The drive unit has a drive motor that rotates rope sheave over which the suspension rope passes. The drive unit is located in an upper section of the hoistway and projects over at least part of the car. To assure safe access to the drive unit when the dimensions of the hoistway are efficiently minimized, the car has a closable opening in the roof through which the drive unit is accessible.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: February 17, 2004
    Assignee: Inventio AG
    Inventors: Hans Elsener, Urs Ammon
  • Inspection opening in an elevator car
    Publication number: 20030015378
    Abstract: An elevator car is of a construction which facilitates inspection and maintenance function while enhancing passenger safety. The car includes a closeable inspection and maintenance opening in a sidewall. A transparent inspection window or an inspection grille forms a closure for the opening. The closure may be lockable, and can also include a sensor to monitor its state.
    Type: Application
    Filed: June 14, 2002
    Publication date: January 23, 2003
    Inventor: Hans Elsener