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US 6,736,450 B2Granted
Collapsible chair
AssigneeSatsuki Co., Ltd.
InventorKaoru Miyagi
Life of this patent
Estimating the term…
Abstract
A collapsible chair includes a frame composed of four pairs of cross legs located on four sides of the chair, namely, front, back and side cross legs. The cross legs are connected at their upper and lower ends with connector blocks and feet, respectively and collapsible in a scissors-like manner. A pair of vertical back legs are located at opposite sides of the back cross legs. A pair of arm rests have front ends pivotably connected to the side cross legs and rear ends pivotably and slidably supported by an arm rest support assembly. In one embodiment, the arm rest support assembly includes a pair of vertical support rods connected to the vertical back legs, and a pair of sleeves pivotably connected to the support rods and adapted to slidably receive the arm rests.
Claims38
A collapsible chair comprising:
- a frame including a pair of front cross legs pivotally connected together intermediate their length, a pair of back cross legs pivotally connected together intermediate their length, two pairs of side cross legs pivotally connected together intermediate their length, a pair of vertical back legs located at opposite sides of the back cross legs, and means for interconnecting the front cross legs, the back cross legs, the side cross legs and the vertical back legs so as to move the collapsible chair between an expanded operable position and a collapsed position, said means for interconnecting including a pair of upper front pivot connections for pivotally connecting upper ends of the front cross legs and adjacent upper ends of the side cross legs, a pair of upper back pivot connections slidably mounted on the vertical back legs and adapted to pivotally connect upper ends of the back cross legs and adjacent upper ends of the side cross legs, a pair of lower front pivot connections for pivotally connecting lower ends of the front cross legs and adjacent lower ends of the side cross legs, and a pair of lower back pivot connections mounted on the vertical back legs and adapted to pivotally connect lower ends of the back cross legs and adjacent lower ends of the side cross legs;
- a flexible seat connected to the frame;
- a pair of rigid arm rests located on opposite sides of the collapsible chair and having front and rear ends, said front ends of the arm rests being connected to said frame;
- and
- means connected to the vertical back legs for moving the arm rests between a substantially horizontal operative position when the collapsible chair is held in its expanded operable position and a substantially vertical stored position when the collapsible chair is held in its collapsed position,
- wherein said means for moving the arm rests comprises a pair of support rods connected to and extending substantially parallel to the vertical back legs, and a corresponding pair of sleeves pivotably connected to the support rods and adapted to slidably receive said arm rests.
3 more elements
A collapsible chair comprising:
- a frame including a pair of front cross legs pivotally connected together intermediate their length, a pair of back cross legs pivotally connected together intermediate their length, two pairs of side cross legs pivotally connected together intermediate their length, a pair of vertical back legs located at opposite sides of the back cross legs, and means for interconnecting the front cross legs, the back cross legs, the side cross legs and the vertical back legs so as to move the collapsible chair between an expanded operable position and a collapsed position, said means for interconnecting including a pair of upper front pivot connections for pivotally connecting upper ends of the front cross legs and adjacent upper ends of the side cross legs, a pair of upper back pivot connections slidably mounted on the vertical back legs and adapted to pivotally connect upper ends of the back cross legs and adjacent upper ends of the side cross legs, a pair of lower front pivot connections for pivotally connecting lower ends of the front cross legs and adjacent lower ends of the side cross legs, and a pair of lower back pivot connections mounted on the vertical back legs and adapted to pivotally connect lower ends of the back cross legs and adjacent lower ends of the side cross legs;
- a flexible seat connected to the frame;
- a pair of rigid arm rests located on opposite sides of the collapsible chair and having front and rear ends, said front ends of the arm rests being connected to said frame;
- and
- means connected to the vertical back legs for moving the arm rests between a substantially horizontal operative position when the collapsible chair is held in its expanded operable position and a substantially vertical stored position when the collapsible chair is held in its collapsed position,
- wherein said means for moving the arm rests comprises a pair of guide rods connected to and extending substantially parallel to the vertical back legs, and a corresponding pair of slide blocks slidably mounted on said guide rods, said rear ends of said arm rests being pivotably connected to said slide blocks.
3 more elements
A collapsible chair comprising:
- a frame including a pair of front cross legs pivotally connected together intermediate their length, a pair of back cross legs pivotally connected together intermediate their length, two pairs of side cross legs pivotally connected together intermediate their length, a pair of vertical back legs located at opposite sides of the back cross legs, and means for interconnecting the front cross legs, the back cross legs, the side cross legs and the vertical back legs so as to move the collapsible chair between an expanded operable position and a collapsed position, said means for interconnecting including a pair of upper front pivot connections for pivotally connecting upper ends of the front cross legs and adjacent upper ends of the side cross legs, a pair of upper back pivot connections slidably mounted on the vertical back legs and adapted to pivotally connect upper ends of the back cross legs and adjacent upper ends of the side cross legs, a pair of lower front pivot connections for pivotally connecting lower ends of the front cross legs and adjacent lower ends of the side cross legs, and a pair of lower back pivot connections mounted on the vertical back legs and adapted to pivotally connect lower ends of the back cross legs and adjacent lower ends of the side cross legs;
- a flexible seat connected to the frame;
- a pair of rigid arm rests located on opposite sides of the collapsible chair and having front and rear ends, said front ends of the arm rests being connected to said frame;
- and
- means connected to the vertical back legs for moving the arm rests between a substantially horizontal operative position when the collapsible chair is held in its expanded operable position and a substantially vertical stored position when the collapsible chair is held in its collapsed position,
- wherein said means for moving the arm rests comprises a pair of support rods connected to and extending substantially parallel to the vertical back legs, a corresponding pair of brackets pivotably connected to said support rods, and rollers rotatably carried by said brackets and rollingly received within said arm rests.
3 more elements
A collapsible chair comprising:
- a frame including a pair of front cross legs pivotally connected together intermediate their length, a pair of back cross legs pivotally connected together intermediate their length, two pairs of side cross legs pivotally connected together intermediate their length, a pair of vertical back legs located at opposite sides of the back cross legs, and means for interconnecting the front cross legs, the back cross legs, the side cross legs and the vertical back legs so as to move the collapsible chair between an expanded operable position and a collapsed position, said means for interconnecting including a pair of upper front pivot connections for pivotally connecting upper ends of the front cross legs and adjacent upper ends of the side cross legs, a pair of upper back pivot connections slidably mounted on the vertical back legs and adapted to pivotally connect upper ends of the back cross legs and adjacent upper ends of the side cross legs, a pair of lower front pivot connections for pivotally connecting lower ends of the front cross legs and adjacent lower ends of the side cross legs, and a pair of lower back pivot connections mounted on the vertical back legs and adapted to pivotally connect lower ends of the back cross legs and adjacent lower ends of the side cross legs;
- a flexible seat connected to the frame;
- a pair of rigid arm rests located on opposite sides of the collapsible chair and having front and rear ends, said front ends of the arm rests being connected to said frame;
- and
- a pair of support rods connected to and extending substantially parallel to the vertical back legs, and a corresponding pair of sliding elements pivotably connected to the support rods and adapted to be slidably connected to said arm rests, wherein the support rods and the sliding elements allow movement of the arm rests between a substantially horizontal operative position when the collapsible chair is held in its expanded operable position and a substantially vertical stored position when the collapsible chair is held in its collapsed position.
2 more elements
Dependencies are inferred from the claim text.