US 12,285,116 B2
Double angle back support adjustment
Steven DuFresne, Hartland, WI (US)
Assigned to Anthro Form, LLC, Waukesha, WI (US)
Filed by Anthro Form, LLC, Waukesha, WI (US)
Filed on May 3, 2023, as Appl. No. 18/311,573.
Application 18/311,573 is a continuation of application No. 17/848,698, filed on Jun. 24, 2022, granted, now 11,641,944.
Claims priority of provisional application 63/221,647, filed on Jul. 14, 2021.
Prior Publication US 2023/0270255 A1, Aug. 31, 2023
Int. Cl. A47C 7/46 (2006.01); A47C 7/40 (2006.01)
CPC A47C 7/462 (2013.01) [A47C 7/402 (2013.01); A47C 7/405 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A chair comprising:
a first back support;
first support arms to connect the first back support to a base of the chair;
a second back support;
a second support arm to connect the second back support to the base of the chair,
the second back support being independently rotatable from the first back support, and each of the first back support and the second back support rotates about a common axis;
an angle adjustment mechanism to enable adjustment of an angle of at least one of the first support arms or the second support arm, the angle adjustment mechanism including:
a first pin having a first pin axis;
a second pin having a second pin axis;
a third pin having a third pin axis; and
wherein the first back support rotates about the first pin axis, the second back support rotates about the second pin axis, and each of the first back support and the second back support rotate about the third pin axis.