Hydraulically Operated Patents (Class 4/563.1)
  • Patent number: 9895030
    Abstract: A new seat is provided. the seat is lightweight, flexible, and water resistant for use in a bathtub, shower, or other aquatic environment. There are deformable projections on the top and bottom of of the seat that both cushion a user and provide gripping action against a supporting surface. The top and bottom of the seat are substantially planar.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: February 20, 2018
    Inventor: Bonita K. Curtis
  • Patent number: 8405353
    Abstract: A controller 10 suitable for controlling a bath lift. The controller 10 includes a rechargeable unit 12 and a first protection unit 14 which measures the voltage and current provided by the rechargeable unit 12. The first protection unit 14 prevents connection to the bath lift when the voltage of the rechargeable unit falls below a lower predetermined limit. A second protection unit 20 is also provided which measures the voltage from the rechargeable unit 12 and detects whether the voltage has fallen below an upper predetermined voltage, and if the voltage has dropped below this level downward movement of the bath lift is not permitted.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: March 26, 2013
    Assignee: Care-Knight Limited
    Inventor: Annette Elvina Greenwood
  • Patent number: 8307471
    Abstract: Bather movement apparatus for use with a sidewall opening bath enclosure generally includes a chaise, a stanchion having a stirrup for supporting the chaise along with a pivot post extending exterior to the bath enclosure and a pivot arm interconnecting the pivot post and stanchion for enabling arcuate movement of the chaise between a bathing position within the bath enclosure and a doorway position outside of the bath enclosure. The movement of the chaise passes the chaise through the bath enclosure side opening.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: November 13, 2012
    Assignee: Axcess Innovations Inc.
    Inventors: Michael Wm. Seymour, Deon Colchester, Robert Rotstan, Jr., Carl Tenbrink
  • Patent number: 7275272
    Abstract: A portable apparatus for use in lowering and lifting a user into and out of a swimming pool includes a frame with vertical, longitudinally adjustable legs, horizontal support arms extending rearwardly from the upper ends of the legs, and feet extending forward from the lower ends of the legs. The support arms are adapted to rest on the pool deck and the feet are adapted to rest on the pool bottom, with the apparatus being held on position only by the frictional forces of the arms and the feet. The apparatus further includes a hydraulic cylinder moveable between raised and lowered positions, and a chair moved into the pool when the cylinder is moved toward its lowered position and lifted above the pool when the cylinder is in its raised position. The chair can be rotated at least 180° when in the raised position to permit user ingress and egress.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: October 2, 2007
    Inventor: Martin Gallan
  • Patent number: 6643860
    Abstract: A bath lifting system comprises a seat which is raised and lowered inside of a bath by a lifting device positioned inside the bath. The lifting device provides an aesthetically appealing system with the seat substantially covering the lifting device, thus obscuring its view. The guiding assembly guides the seat from a lowered position to a raised position facilitates ingress and egress to a bather. A composite bath embodiment and a retrofit embodiment, both with either straight up or laterally offset lifting, are disclosed.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: November 11, 2003
    Assignee: Freedom Bath, Inc.
    Inventors: Mary F. Sherlock, Rainer Kuenzel
  • Patent number: 6427258
    Abstract: A device, comprising an extendable object having a retracted position and an extended position with respect to a fixture; and a motive power system adapted for moving the object between the retracted and extended positions. The extendable object is preferably a water fixture amenity, such as a concealable compartment or a raisable seat. Preferably, the motive power system is a hydraulic system and includes a cylinder, a power source, and controls. The cylinder has a piston adapted for moving the compartment with respect to the fixture. The power source is connected to the cylinder and is adapted to extend the piston and move the compartment. The power source includes a water line in fluid communication with a cylinder volume. The controls are adapted for regulating movement of the piston by the power source. A method of moving a water fixture amenity, including the concealable compartment and the raisable seat, generally comprises two steps.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: August 6, 2002
    Assignee: Wayzata Innovative Technologies
    Inventor: James C. Gooley
  • Patent number: 6397409
    Abstract: A bath lift system comprises a seat which is raised and lowered inside of a bath by a lifting device positioned inside the bath. The lifting device provides an aesthetically appealing system with the seat substantially concealing the lifting device, thus obscuring its view. The lifting device reduces leakage while providing straight line movement positioning of the seat from a central position to a position along side of the top rim of the bath. Also, an alternative internal lifting device that eliminates the need for openings through the wall of the bath is provided.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: June 4, 2002
    Assignee: Freedom Bath, Inc.
    Inventors: Mary F. Sherlock, Rainer Kuenzel, John R. Schubert
  • Patent number: 6378659
    Abstract: A hydraulic pool lift is disclosed. The lift has enhanced stability due to its adjustable support assembly, and a reinforced piston rod. A load carrying component is rotated 180° from a deck position to a pool position. A curved track on a hydraulically driven piston guides the displacement of the load carrying component. The track is wider in its straight portions. The wider straight portion closely approximates the width of a notch in an end cap through which the track and piston travel. This arrangement affords greater stability in the uppermost position for ease of loading and unloading the lift.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: April 30, 2002
    Assignee: Spectrum Products, LLC
    Inventor: Keith Krumbeck
  • Patent number: 6351860
    Abstract: The chair lift is formed by a hollow outer stationary cylinder secured to the bathtub and an inner cylinder having a closed upper end secured to the bathtub located inside and spaced from the outer cylinder. A hollow movable cylinder having a closed upper end is slidably located between the inner and outer cylinders forming a chamber between the inner and moveable cylinders. A water control system including a pump is provided for injecting water into the chamber for moving the movable cylinder to an upper position and for removing water from the chamber to allow the movable cylinder to move to a lower position. The outer cylinder has a vertical slot formed through its wall. A chair has a connection that extends through the slot and is connected to the movable cylinder for moving the chair to upper and lower positions with the movable cylinder.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: March 5, 2002
    Inventor: Richard C. Schaffer
  • Patent number: 6256807
    Abstract: A bath lift for assisting a person into and out of a bath tub is disclosed. The lift includes a tower mounted adjacent or atop a bath tub. The tower includes structure for attachment of the tower to a wall adjacent the tub or to the tub when the lift is in use. The tower defines a spaced pair of tracks, reciprocatably mounting a carriage by rollers engaged with the tracks. An elongate threaded member is rotatably mounted in the tower and operably engaging the carriage. A drive is connected to the member to effect member rotation thereby causing longitudinal movement of the carriage relative to the tower as coaction of the tracks and rollers guides movement when the lift is in use. An occupant chair including a seat and a back is supported by the carriage. The chair as also mounted on the support for rotation about a horizontal axis when the lift is in use to enable adjustment of the chair back for occupant comfort.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: July 10, 2001
    Assignee: Silver Crown Associates Limited
    Inventor: William David Steadman
  • Patent number: 6226809
    Abstract: An hydraulic bath seat lift has a hydraulic cylinder assembly comprising an inner cylinder fixed with the floor and an outer cylinder, which can be raised and lowered by supplying hydraulic fluid to the assembly. The outer cylinder supports a seat at the end of a horizontal arm. The inner cylinder has a pin at its upper end projecting outwardly into one of two sets of longitudinal grooves along the inner surface of the outer cylinder to prevent the outer cylinder rotating relative to the inner cylinder. The grooves open into one another at the lower end of the outer cylinder so that when the outer cylinder is raised fully, to lift the seat above the bath, the cylinder can be rotated to swing the seat over the bath and then lowered with the pin engaging the other set of grooves.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: May 8, 2001
    Assignee: Smith Industries Public Limited Company
    Inventor: Anthony Roger Davies
  • Patent number: 6170612
    Abstract: A hydraulic pool lift is disclosed. The lift has enhanced stability due to its adjustable support assembly, and a reinforced piston rod. A load carrying component is rotated 180° from a deck position to a pool position. A curved track on a hydraulically driven piston guides the displacement of the load carrying component. The track is wider in its straight portions. The wider straight portion closely approximates the width of a notch in an end cap through which the track and piston travel. This arrangement affords greater stability in the uppermost position for ease of loading and unloading the lift.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: January 9, 2001
    Assignee: Spectrum Distributors, Inc.
    Inventor: Keith Krumbeck