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US 11,684,160 B1Granted
Low envelope chair with high back pitch
AssigneeSeries International, LLC
InventorAlvaro Mauricio Olarte
Life of this patent
Estimating the term…
Abstract
A low envelope chair with a back that includes portions with relative high back pitches at the lower ends and other higher portions with relatively low back pitches to give the overall feeling of a high back pitch chair while retaining the low envelope. By low envelope, generally less than approximately 17 inches, preferably approximately 16 inches or less or even more preferably approximately 15 inches or less are contemplated with respect to chairs that have a tilt up seat. A high back pitch would generally be more than 15 degrees, preferably more than 20 degrees, preferably more than 25 degrees and even more preferably more than 30 degrees.
Claims26
A chair comprising:
- a support, a back and a seat, the back and seat supported by the support and the seat pivotable with respect to the back via a gravity lift mechanism, and the support, back and seat defining a fixed chair with an envelope of approximately 17 Inches or less;
- the back defining a backrest surface comprising a plurality of sections comprising first, second and third sections each having a different pitch with one or more lower ones of the plurality of sections causing a backrest surface to extend a greater distance rearward per distance upwards as compared to one or more upper ones of the plurality of sections which extend rearwards less per distance upwards
- the first section located at a lower end of the backrest and having a pitch angle less than approximately 20 degrees or a convex radius and extending a first distance;
- the second section located above the first section and having a pitch angle greater than 25 degrees or a concave radius of at least approximately 11 inches and extending a second distance;
- the third section located above the second section and having a pitch angle less than 20 degrees or radius of approximately 20 inches or greater and extending a third distance.
2 more elements
A chair comprising:
- a support, a back and a seat, the back and seat supported by the support and the seat pivotable with respect to the back, and the support, back and seat defining a fixed chair with an envelope of approximately 16 inches or less;
- the back defining a backrest surface comprising a plurality of sections comprising first, second and third sections and a rear surface;
- the first section located at a lower end of the backrest and having a first radius and extending a first distance;
- the second section located above the first section and having a pitch of at least 25 degrees and extending a second distance;
- the third section located above the second section and having a second radius and extending a third distance;
- a fourth section located above the third section and having a third radius;
- the first radius and the second radius in inches are each within 25% to 75% of the third radius.
4 more elements
A chair comprising:
- a support, a back and a seat, the back and seat supported by the support and the seat pivotable with respect to the back, and the support, back and seat defining a fixed chair with an envelope of approximately 17 inches or less;
- the back defining a backrest surface comprising a plurality of sections comprising first, second and third sections and a rear surface wherein a thickness of the back measured between the backrest surface and the rear surface is constant along 50% or more of the back;
- the first section located at a lower end of the backrest and having a first pitch and extending a first distance;
- the second section located above the first section and having a second pitch and extending a second distance;
- the third section located above the second section and having a third pitch extending a third distance;
- the second pitch is at least approximately 1.5 times the first and the third pitches.
3 more elements
A chair comprising:
- a support, a back and a seat, the back and seat supported by the support and the seat pivotable with respect to the back, and the support, back and seat defining a fixed chair with an envelope of approximately 16 inches or less;
- the back defining a backrest surface comprising a plurality of sections comprising first, second and third sections and a rear surface;
- the first section located at a lower end of the backrest and having a convex radius and extending a first distance;
- the second section located above the first section and having a pitch of at least 25 degrees and extending a second distance;
- the third section located above the second section and having a concave radius and extending a third distance;
- the convex radius and the concave radius in inches are within 35% of each other.
3 more elements
Dependencies are inferred from the claim text.