Parallel Leg Pairs Patents (Class 297/47)
  • Patent number: 11864660
    Abstract: The present disclosure provides an adjustable bracket for furniture, including a base and multiple support members movably connected to the base; the base includes a lower portion and an upper portion, and the multiple support members include three or more lower support members; the lower portion includes a lower receiving portion configured to receive the lower support members, a screw, and a knob; each lower support member includes a leg and a connection portion disposed proximate to the lower receiving portion; the connection portion includes a first elastic member connected to the lower receiving portion and an end portion away from the mounting surface; the end portion abuts against the upper portion when the legs are in a folded position, and the end portion is tangent to the nut and a tangent point to the nut is changeable when the legs are in an unfolded position.
    Type: Grant
    Filed: August 9, 2023
    Date of Patent: January 9, 2024
    Inventor: Lili Wang
  • Patent number: 10806262
    Abstract: A folding chair includes a seat, a front leg unit, a rear leg unit, at least one coupling rod unit, and a safety mechanism. The folding chair is convertible between a folded state and an unfolded state. When the folding chair is in the unfolded state, a blocking member of the safety mechanism is switchable between a locked state, in which the blocking member abuts against a first coupling rod for blocking movement of the at least one coupling rod unit to maintain the folding chair in the unfolded state, and an unlocked state, in which the first coupling rod is not obstructed by the blocking member, such that conversion of the folding chair to the folded state to the folded state is permitted.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: October 20, 2020
    Assignee: TAIWAN SHIN YEH ENTERPRISE CO., LTD.
    Inventor: Hung-Tsun Liu
  • Patent number: 8702162
    Abstract: A portable chair provides multiple comfortable sitting positions for various outdoor uses. In one position, a spear fisher may comfortably and safely lean over a hole while having support for the back, neck and arms.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: April 22, 2014
    Inventor: Myron Isaacson
  • Patent number: 8113587
    Abstract: A portable lift chair has a lightweight frame with a pair of cross members extending from opposing sides thereof from front to back in a substantially X-shaped configuration, with the cross members pivotally secured to one another and to the front portion of the frame by a pivoting linkage, a seat base, a pivotable bracket connecting the front portion of the seat base to the frame, a weight adjustable pressurized cylinder providing an upward bias to the rear portion of the seat base, a removable back rest, and a guide track with an actuator for moving the weight adjustment bracket from one anchor point to another as desired to achieve a predetermined pressure for the seat.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: February 14, 2012
    Inventors: Majid Zarinfar, Henry de la Rosa
  • Patent number: 8002343
    Abstract: A foldable dining chair for children comprises a frame body (1) and a seat mechanism disposed thereon. The frame body (1) may be in an open state and a folded state. The frame body (1) is folded in back-and-forth direction and up-and-down direction thereof when it is in the folded state. The frame body (1) comprises a backrest frame (2), an armrest frame (3) of which the rear end is rotatably connected to the backrest frame (2), an upright support frame (4) of which the upper end is rotatably connected to the front end of the armrest frame (3), a seat frame (5) of which the front end is rotatably connected to the upright support frame (4), a front support frame (6) rotatably connected to the lower end of the upright support frame (4), and a rear support frame (7). The rear end of the seat frame (5) is connected rotatably to the rear support frame (7).
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: August 23, 2011
    Assignee: Goodbaby Child Products Co., Ltd.
    Inventors: Zhenghuan Song, Feng Liu
  • Patent number: 7954890
    Abstract: A folding chair is disclosed. The chair includes a plurality of legs, including front and back legs, a seat, and a folding unit. The folding unit is attached to the legs and the seat, and it is configured to fold the legs using a force applied to at least one of the legs. The front legs nest beside the back legs.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: June 7, 2011
    Assignee: Meco Corporation
    Inventor: Douglas G. Wright
  • Patent number: 7828377
    Abstract: Articles of furniture having a collapsible frame including a support assembly having a pair of collapsible longitudinally extending members coupled for angular movement about a pivot axis between open and closed positions and movable transversely of and through the axis between extended and retracted positions. Also includes mechanism for releasably securing each of the members in extended position and for preventing angular movement of the members from the closed to the open position when either and both of the members are out of extended position.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: November 9, 2010
    Inventor: Daniel R. Grace
  • Patent number: 7784861
    Abstract: A spring locking knob and a fixed stop at the upper ends of the front legs of a chair frame cooperate to restrict movement of a slideset joining the front legs, rear legs and seat support struts of a chair in making the chair with its cover seat more stable and resistant to an inadvertent folding closure.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: August 31, 2010
    Inventor: Jianrong Deng
  • Patent number: 7717502
    Abstract: A spring locking knob and a fixed stop at the upper ends of the front legs of a chair frame cooperate to restrict movement of a slideset joining the front legs, rear legs and seat support struts of a chair in making the chair more stable and resistant to an inadvertent folding closure.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: May 18, 2010
    Inventor: Jianrong Deng
  • Publication number: 20090026810
    Abstract: A portable chair is configurable to serve various utilitarian needs. In one embodiment, the portable multifunctional chair includes a frame, a seat attached to the frame and an adjustable seat flap fixed to the seat. The seat has an inner edge that encloses a seat opening. The adjustable seat flap is approximately flush with the seat when the seat flap is secured to the seat in a closed position in which the seat flap covers the opening. The multifunctional chair has at least one transverse dimension that is less than 25% of the longitudinal length when the multifunctional chair is configured in a portable state.
    Type: Application
    Filed: April 18, 2008
    Publication date: January 29, 2009
    Inventors: Mark A. Grieger, Patrick J. Sommer, Kim A. Goneau
  • Publication number: 20080217966
    Abstract: A folding chair includes handle frames, and front legs and rear legs configured to support the chair in an upright position. The front legs are pivotally attached to respective rear legs. A chair portion, includes a back rest, a seat and a leg rest pivotally attached to the seat. Pivot frames are pivotally attached to respective handle frames, the back rest and the rear legs. Sliders are pivotally attached to respective pivot frames, the back rest, respective arm rests and the seat and are configured to slide along the front legs.
    Type: Application
    Filed: March 5, 2007
    Publication date: September 11, 2008
    Inventor: Richard E. Cone
  • Publication number: 20080197676
    Abstract: A folding chair is disclosed. The chair includes a plurality of legs, including front and back legs, a seat, and a folding unit. The folding unit is attached to the legs and the seat, and it is configured to fold the legs using a force applied to at least one of the legs. The front legs nest beside the back legs.
    Type: Application
    Filed: February 19, 2008
    Publication date: August 21, 2008
    Inventor: Douglas G. Wright
  • Patent number: 7128367
    Abstract: A foldable highchair framework includes a folded support stand, a chair, a link assembly and a positioning mechanism. The folded support stand includes a front stand and a rear stand capable of being drawn close. The chair includes a seat and a backrest pivoted to each other. The link assembly is pivoted between the folded support stand and the chair. When the positioning mechanism of this invention releases the chair, the rear stand is able to draw close to the front stand. The linking operation with the link assembly allows folding of the chair and the backrest at the same time, to form a foldable highchair framework with a compact size.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: October 31, 2006
    Assignee: Link Treasure Limited
    Inventors: Youn-Fu You, Wei-Yeh Li
  • Patent number: 6454348
    Abstract: A foldable chair assembly includes front and rear leg rods, sleeve members sleeved slidably and respectively on the leg rods, a fabric seat connected to the sleeve members, a fabric backrest connected to the rear leg rods, and four foldable cross-frames connected pivotally to the leg rods and the sleeve members. Each of a pair of armrest rods is connected pivotally to one of the front leg rods at one end, and is connected movably to one of the rear leg rods at the other end.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: September 24, 2002
    Inventor: Chung-Sen Wu
  • Patent number: 5947553
    Abstract: A folding chair includes front and rear leg frames which are pivotally connected to a seat frame, a backrest frame having a lower end portion pivoted to the rear leg frame, a pair of armrest members which have front ends pivoted to the front leg frame and rear ends pivoted to the backrest frame, and a pair of connecting rods which have front ends pivoted to the front portion of the seat frame and rear ends pivoted the backrest frame. A pair of locking plates are fixedly attached to the backrest frame and have lower portions which are movable towards two side tubes of the seat frame when the chair is unfolded. The side tubes of the seat frame are provided with resilient protrusions which are automatically engageable with engaging slots of the locking plates, respectively, when the chair is unfolded, thereby eliminating the need to operate the locking plates during folding and unfolding operations.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: September 7, 1999
    Assignee: Shin Yen Enterprise Co., Ltd.
    Inventor: Chuen-Jong Tseng
  • Patent number: 4684278
    Abstract: A joint for use in a collapsible chair has a main component with a stub which is connectable with the seat of the chair and is integral with a housing for the flat shorter arms of first and second two-armed levers each of which is pivotally secured to the housing by a rivet. The longer arm of the first lever is connected to the back and the longer arm of the second lever is connected to the rear foot of the chair. The shorter arms of the levers are coupled to the respective end portions of a link by two pivot members whose axes are parallel to the axes of the rivets. The levers are pivotable relative to the main component between (a) operative positions in which the chair is erected and the axis of the rivet for the first or second lever is disposed in the common plane of the two pivot members, and (b) inoperative positions in which the chair is collapsed and the longer arms of the levers are adjacent and parallel to the stub of the main component.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: August 4, 1987
    Inventor: Jorg Rauschenberger
  • Patent number: 4684171
    Abstract: A foldable armchair comprising a seat frame disposed in a first plane, and wheels rollingly supporting the frame. The wheels are carried by at least two legs rotatably mounted at their upper ends on the frame about first and second axes of rotation respectively. These first and second axes are substantially parallel to the first plane and coaxial, the other extremities of the two legs being connected to at least one roller by a device having at least two degrees of freedom of rotation. The two legs lie substantially in a second plane substantially parallel to the first plane. An upright is rotatably mounted about a third axis parallel to the first and second axes, and a bar interconnects the two legs. A telescoping lever variable in length between two limited positons, is rotatably mounted at one end on the upright and at its other end on the bar, so as to be able to drive the legs in rotation about the first and second axes.
    Type: Grant
    Filed: May 20, 1986
    Date of Patent: August 4, 1987
    Assignee: Lacoste, SA
    Inventors: Jehan Roy, Jean Dubois
  • Patent number: 4603902
    Abstract: A foldable child's high chair has a use position wherein an occupant can occupy the chair and a folded position wherein the chair can be folded for storage. The chair includes a seat having a base portion and a back support portion. The back support portion includes a stationary section and a movable section which is movable to position the child. A retaining latch is provided for retaining the movable section in at least two different selected positions relative to the stationary section. A frame is provided for supporting the seat and includes a front leg and a rear leg. A first pivot is provided for pivotally coupling the base portion to the front leg, and a second pivot is provided for pivotally coupling the base portion to the rear leg. A third pivot is provided for pivotally coupling the back support to the rear leg. A rigid link member and a pair of pivots are provided for coupling the back support portion to the base portion.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: August 5, 1986
    Assignee: Cosco, Inc.
    Inventor: Kevin Maloney
  • Patent number: 4580833
    Abstract: An improved folding high chair is disclosed of the type movable between a collapsed position for storage and an upright locked position for use by a child. The chair has a safety mechanism to prevent collapse of the chair while occupied by a child. Momentary release of the chair from its upright locked position while occupied by a child could cause rapid collapse of the chair resulting in possible discomfort and/or injury to the child.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: April 8, 1986
    Assignee: The Quaker Oats Company
    Inventor: David G. Waples
  • Patent number: 4482184
    Abstract: Chair support pivotably carries parallelogramic support arms which are pivoted to seat rails. One of the support arms continues above the seat rail to become an arm support and adjacent the top thereof carries one end of a telescoping unit. The other end of the telescoping unit is pivoted to the seat rail. The telescoping unit is of such length that, when the support arms are in the erected position, the telescoping unit bottoms out to become a rigid compression member and provide a firm, erected position.
    Type: Grant
    Filed: September 17, 1982
    Date of Patent: November 13, 1984
    Inventor: Christopher D. Mincey
  • Patent number: 4245709
    Abstract: A stabilizer sleeve, or other sleeve, to be releasably mounted on a drill collar for centering a drill string in a well bore, includes an outer stabilizer sleeve to be mounted on the cylindrical periphery of the drill collar and having an internally threaded bore, the threads of which have conical roots, receiving an externally threaded yieldable sleeve member placed over the drill collar, the crests of the external threads also being conical, rotation of the yieldable member threading it into the stabilizer sleeve and effecting its contraction until its internal surface contacts the periphery of the drill collar, further rotation and tightening of the sleeve member in the stabilizer sleeve compressing the sleeve member against the drill collar periphery, with the crests bearing against the root portions of the internal sleeve threads to secure the sleeve frictionally in position on the drill collar.
    Type: Grant
    Filed: April 27, 1979
    Date of Patent: January 20, 1981
    Assignee: Christensen, Inc.
    Inventor: Tom Manuel