Patents by Inventor Joris Schroder, Deceased

Joris Schroder, Deceased 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).

  • Patent number: 5192836
    Abstract: An elevator car suitable for use by physically handicapped passengers can be selected from a group of elevator cars under the control of a group control wherein call registering and indicating devices positioned at the floors served by the cars include an additional key for activating a switching circuit. The switching circuit is connected to a car load memory and a memory for storing the alighting calls for target floors where passengers are to leave the cars. A first condition is satisfied when there is no alighting call for a car, no exiting passenger to interfere with an entering wheelchair, and a second condition is satisfied when the load, number of passengers, in a car is smaller than a certain load limit value indicating sufficient space for the wheelchair.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: March 9, 1993
    Assignee: Inventio AG
    Inventor: Joris Schroder, deceased
  • Patent number: 5092431
    Abstract: A group control selects the cars of an elevator group for boarding passengers such that the passenger arrive at the shaft door of the selected elevator earlier than the selected car whereby unnecessarily long stops are avoided. A memory for the storage of times needed by a passenger for traversing the paths between the respectively actuated call registering and indicating device and the shaft doors of the elevator is provided for each elevator. A comparator connected to the memory compares the passenger traverse time with the travelling time of the car to the call input floor. If the travelling time is less than the time needed by the passenger to move to the shaft door, a switching device connected to the output of the comparator becomes effective to exclude the elevator from the call allocation procedure.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: March 3, 1992
    Assignee: Inventio AG
    Inventor: Joris Schroder, deceased
  • Patent number: 5086883
    Abstract: A group control for double car elevators permits the upper as well as the lower cars to be used at a main stopping floor for travel to both even-numbered and odd-numbered floors. The control has a call memory for each car in which the target calls entered at the main stopping floor and identifying the target floors are stored. A switching circuit has an input connected to the call memories in such a manner that the double car is scheduled in dependence on the allocated call as stopping at floor pairs numbered even-odd or odd-even. An output of the switching circuit is connected to a switching device which excludes either the double cars stopping at floor pairs numbered even-odd or at floor pairs numbered odd-even from the allocation process in the case of a subsequent call to be allocated in order to maximize the possiblilities for coincident stops without losing flexibility.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: February 11, 1992
    Assignee: Inventio AG
    Inventor: Joris Schroder, Deceased