Z-fold Riser Patents (Class 105/448)
  • Patent number: 10781808
    Abstract: A sphygmomanometer device includes a piezoelectric pump, a valve, and a cuff. The valve includes a first valve housing, a diaphragm, and a second valve housing. The diaphragm is fixed to the second valve housing and first valve housing such that it is separated from a valve seat and the periphery of an opening portion in the diaphragm is in contact with a valve seat while providing a pressure thereto. Thus, the diaphragm defines a lower valve chamber communicating with a first vent hole, an upper valve chamber communicating with a second vent hole, a lower valve chamber communicating with a first vent hole, and an upper valve chamber communicating with the upper valve chamber, together with the second valve housing and first valve housing.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: September 22, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kenichiro Kawamura
  • Patent number: 10507848
    Abstract: A railway vehicle for passenger transport comprising a vehicle body, said vehicle body including a passenger entrance area and a vehicle boarding aid for facilitating passengers' access to the passenger entrance area, the vehicle boarding aid comprising a movable entry threshold arranged in an access position facilitating passengers' access to the passenger entrance area and a vertical position adjusting device for vertically adjusting the access position of the entry threshold as a function of a potential vertical gap between a station platform and the passenger entrance area, wherein said entry threshold is fixedly arranged in said access position in all operating states of the railway vehicle.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: December 17, 2019
    Assignee: Alstom Transport Technologies
    Inventors: Francis Demarquilly, Eric Combeau, Frédéric Le-Breton
  • Patent number: 10195997
    Abstract: A horizontally moving retractable vehicle step is attachable to a vehicle, such as a low to the ground vehicle like a van. The horizontal vehicle step can provide access to different portions of the vehicle. Further, the horizontal vehicle step can act as a safety mechanism to reduce potential harm to a user in accidentally stepping in gaps between the vehicle and a curb.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: February 5, 2019
    Assignee: Lund Motion Products, Inc.
    Inventor: Anthony Nicholas Smith
  • Patent number: 9963076
    Abstract: A step system, for a pickup truck having a tailgate movable between a closed position and an open position, includes a mounting bracket configured to couple to the pickup truck, and a link system pivotably coupled to the mounting bracket and configured to operably and mechanically couple to the tailgate such that movement of the tailgate from the closed position to the open position automatically pivots the link system from a stowed position beneath the pickup truck to a deployed position rear of the pickup truck. A step portion is coupled to the link system and configured to provide a step for an individual between the ground and the tailgate when the link system is in the deployed position.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: May 8, 2018
    Assignee: FCA US LLC
    Inventors: Frederick F Bender, Antony Elliott, Michael J Squire, Chad Vermeulen, Paul Gardiner, Daniel Teodorof
  • Patent number: 8556283
    Abstract: Boarding and deboarding apparatus for a vehicle, including a step that can be moved back and forth between a retracted and extended position, which at least in a partially extended position defines a first area that can be stepped upon, lateral guides of the step for attachment to a vehicle, a folding step which is mounted on the step so as to be pivotable between a folded-in and folded-out position and which in a folded-out position defines a second area that can be stepped upon which is parallel to the first area, and blocking means which prevent the folding step from pivoting between the retracted position and an intermediate position of the step, and which release the pivoting of the folding step, at the latest, when the extended position of the step has been reached.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: October 15, 2013
    Assignee: Gebr. Bode GmbH & Co KG
    Inventor: Abbas Rasekhi Coochesfahani
  • Patent number: 8196865
    Abstract: The present invention relates to a foldable step unit (10) for a rotorcraft, the step unit being provided with a bottom step (16) and a stationary support (11) that is secured to the structure of the rotorcraft (2). The step unit (10) comprises a left side beam (14) and a right beam (15) hinged on said stationary support (11), said bottom step (16) being arranged on a left free end (14?) and a right free end (15?) respectively of the left and right side beams (14, 15) via a pivot pin (16?), drive means (18) for said step unit (10) and connected via at least one control means (21, 22) to at least one side beam (14, 15) enable said step unit (10) to be retracted into and extended from a housing (2) formed in the rotorcraft (1).
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: June 12, 2012
    Assignee: Eurocopter
    Inventor: Eric André Martin
  • Patent number: 5230288
    Abstract: In order to board or exit a vehicle, one or a plurality of steps or plates are provided for negotiation of a possible difference of height by a person in a wheelchair entering or getting off between the level of the floor of the vehicle and a platform at a higher or lower level. At least one step or plate is foreseen which is height adjustable, and can be positioned at a position above the floor of the vehicle, below the floor of the vehicle, or at the same level as the floor of the vehicle.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: July 27, 1993
    Assignee: Renfe
    Inventor: Hans Bickel
  • Patent number: 4164292
    Abstract: This invention relates to an automatic lift device for use in association with doorway openings of buildings or of vehicles such as buses and vans so as to facilitate the loading and unloading of handicapped persons into and out of such buildings and/or vehicles. More specifically, the invention relates to an automatic lift device which consists of a lift carriage that is mounted within the doorway opening so as to be vertically movable therein. Movable step and riser elements are provided within the lift carriage so as to form normal upper and lower entrance steps in their retracted normal use position. The lift carriage is selectively movable to a lowered ground level position and a raised interior floor level position while the upper step and riser remain in their retracted normal step position within the lift carriage.
    Type: Grant
    Filed: November 28, 1977
    Date of Patent: August 14, 1979
    Assignee: Karphen Lift Company
    Inventor: Lawrence E. Karkau
  • Patent number: 4081091
    Abstract: A lift device particularly suitable for lifting handicapped persons with or without wheelchairs, into a vehicle or building. The lift can be incorporated into the doorway of any given vehicle, or into any step structure within a building. The lift, in its stowed position, forms the normal steps. The platform is made of three hinged parallel sections which can be withdrawn and folded into two steps. A ramp normally hidden under the steps slides forward to allow easy access to the extended platform and a safety flap housed in the ramp flips upward to form an angle stop preventing the wheelchair from rolling backward during platform motion.
    Type: Grant
    Filed: February 17, 1977
    Date of Patent: March 28, 1978
    Assignee: Transportation Design & Technology, Inc.
    Inventor: Graham Roy Thorley
  • Patent number: 4027807
    Abstract: A lift device particularly suitable for lifting handicapped persons with or without wheel chairs into a vehicle or building. The lift can be incorporated into the doorway of any given vehicle, or into any step structure within a building. The lift in its stowed position forms the normal steps. The various step elements are moveable and can cooperate to form a platform which can be lowered or raised to any position between the upper and lower level of the steps. A ramp normally hidden under the steps slides forward to allow easy access to the extended platform and a safety flap housed in the ramp flips upward to form an angle stop preventing the wheel chair from rolling backward during platform motion.
    Type: Grant
    Filed: August 20, 1975
    Date of Patent: June 7, 1977
    Assignee: Transportation Design & Technology
    Inventor: Graham R. Thorley