Seating unit with crossbar seat support
First Claim
Patent Images
1. A seating unit comprising:
- a base having a housing and at least one support arm extending laterally relative to each side of the housing;
a force-generating device positioned within the housing;
a seat-supporting structure including a crossbar and fore-and-aft elongated side frame sections, each said side frame section having opposite ends, one of the opposite ends being attached to one of the ends of the cross bar to define a U-shape in top view, the cross bar being operably attached to the force generating device and extending laterally relative to the housing, the crossbar being operably supported for movement in a generally fore-and-aft direction relative to the housing and being biased by the force-generating device in a first direction toward an upright position and biased against movement in an opposite second direction toward a recline position; and
a seat supported at least in part by the crossbar, with the seat support being operably positioned in spaced relation to the housing and being biased against movement in the second direction.
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Accused Products
Abstract
A seating unit includes a base having a housing and support arms extending laterally on each side of the housing. A back frame is pivoted to the support arms on each side, and a slide slidably engages the housing. A seat-supporting structure includes a crossbar pivotally attached to the slide member at a first pivot location and side frame sections extending rearwardly from ends of the crossbar that are pivotally attached to the lower arms of the back at a second pivot location spaced horizontally from the first pivot locations to define a three-point support for a seat above the housing. A spring is operably coupled to the slide to bias the back and seat toward upright positions.
79 Citations
52 Claims
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1. A seating unit comprising:
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a base having a housing and at least one support arm extending laterally relative to each side of the housing; a force-generating device positioned within the housing; a seat-supporting structure including a crossbar and fore-and-aft elongated side frame sections, each said side frame section having opposite ends, one of the opposite ends being attached to one of the ends of the cross bar to define a U-shape in top view, the cross bar being operably attached to the force generating device and extending laterally relative to the housing, the crossbar being operably supported for movement in a generally fore-and-aft direction relative to the housing and being biased by the force-generating device in a first direction toward an upright position and biased against movement in an opposite second direction toward a recline position; and a seat supported at least in part by the crossbar, with the seat support being operably positioned in spaced relation to the housing and being biased against movement in the second direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 46, 47, 52)
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28. A seating unit comprising:
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a base having a housing and support arms extending laterally and upwardly on each side of the housing; a back with lower arms pivoted to the support arms on each side; a slide member slidably engaging the housing; a seat-supporting structure including a crossbar pivotally attached to the slide member at a first pivot location and including side frame sections extending from ends of the crossbar, the side frame sections being pivotally attached to the lower arms of the back at a second pivot location spaced horizontally from the first pivot location;
each said side frame section being elongated in a fore-aft direction and having opposite ends, one of the opposite ends being attached to one of the ends of the cross bar to define a U-shape in top view, the crossbar being adapted to move generally fore-and-aft relative to the housing, with the seat-supporting structure being adapted to stably support a seat above the housing; anda biasing device operably coupled to one of the back, the slide member and the seat-supporting structure that biases the back and the seat-supporting structure toward upright positions. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A seating unit comprising:
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a base support structure; a U-shaped seat-supporting structure including a crossbar slidably attached to the base support structure at a first location and including frame-engaging sections extending from ends of the crossbar, the frame-engaging sections being elongated in a fore-and-aft direction and having opposite ends, one of the opposite ends being attached to one of the ends of the cross bar to define a U-shape in top view, the cross bar being operably supported and coupled to the base support structure at a second pivot location spaced horizontally from the first location to define an arrangement including at least three non-aligned support points;
the crossbar being adapted to move generally fore-and-aft relative to the base support structure;a seat supported at the at least three non-aligned support points by the seat-supporting structure above the base support structure; and a biasing device operably coupled to at least one of the base support structure, the seat-supporting structure, and the seat that biases the seat from a recline position toward an upright position. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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42. A seat-supporting apparatus for use in a seating unit, where the seating unit includes a control housing, a seat, and a back operably supported on the control housing for synchronous movement upon recline of the back, the seat-supporting apparatus comprising:
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a force-generating device positioned within the housing; and a seat-supporting structure including a crossbar operably attached to the force generating device and extending laterally relative to the housing for supporting the seat over the housing, the seat-supporting structure further including side frame sections that are attached to ends of the cross bar, the side frame sections each being elongated in a fore-and-aft direction and having opposite ends, one of the opposite ends being attached to one of the ends of the cross bar to define a U-shape in top view, the cross bar being the crossbar being operably movably supported at least in part by the crossbar on the control housing for movement in a generally fore-and-aft direction relative to the housing and being biased by the force-generating device in a first direction toward an upright position and biased against movement in the substantially opposite second direction toward a recline position. - View Dependent Claims (43, 44, 45)
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48. A seating unit comprising:
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a base having a housing and at least one support arm extending laterally relative to each side of the housing; a force-generating device positioned within the housing; a seat-supporting structure including a crossbar operably attached to the force generating device and extending laterally relative to the housing, the crossbar being operably supported for movement in a generally fore-and-aft direction relative to the housing and being biased by the force-generating device in a first direction toward an upright position and biased against movement in an opposite second direction toward a recline position, the cross bar having a horizontally-extending lower center portion, angled intermediate portions extending from opposite ends of the lower center portion, and horizontally-extending raised outboard portions extending from outboard ends of the intermediate portions; and a seat supported at least in part by the crossbar, with the seat support being operably positioned in spaced relation to the housing and being biased against movement in the second direction. - View Dependent Claims (49, 50, 51)
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Specification