Stools TRIZ Cases

See how a leaf-spring chair uses a 1:0.5 to 1:4 transmission ratio and curved track to enable r

See how alternating dynamic and static supports with a rotatable handle adjust seat firmness to

See how a two-region footrest chassis uses dual-axis pivoting to extend without pressing calves

See how flexible V-shaped support arms enable lateral backrest tilting while maintaining stabil

See how an articulating support apparatus with adjustable arm, leg, and back sections enables e

See how a pin-and-slot coupling with upward-sloped guides prevents shirt shear and bridging whi

See how a crossed X-frame with parallelogram linkage enables armchair-to-chair conversion, coll

See how a doubly convex elastic backrest merges lumbar and thoracic support into one curved str

See how a segmented mounting assembly with rotation mechanism enables flexible seating arrangem

See how a counter plate shifts the latch center of gravity to the rotational center, reducing t

See how guide rails and translation means reduce footrest mechanism installation space while ma

See how an integrated elastomeric connecting section merges bearing and spring functions to ena

See how a rotatable adjustment means synchronizes two blocking rods to enable one-handed footre

See how a knuckle joint lever and weighing mechanism maintain pre-adjusted back support force w

See how independent elastic protrusions enable lateral and vertical micro-movements for back mu

See how front and rear torsion bars with opposing-rotation links and dampers improve seat vibra

See how a molded connection assembly merges bearing, mounting, and resilient elements to enable

See how a scissor linkage mechanism redirects footrest forces into the frame, bypassing the act

See how bellows and rods enable a stackable classroom chair to transition between fixed and mov

See how a motor-actuated pivot system with spring bias and release control simplifies headrest

See how a counterweighted central pivot joint enables 10-20° angular movement, requiring contin

See how alternating footrest and backstop assemblies enable reclining theater seats to achieve

See how an adjustable footrest with guide bars and rotatable plates adapts height and inclinati

See how relocating the turning and pivoting device to the stand element eliminates the seat mec

See how a composite sitting device combines a resilient triangular padded member with a fully i

See how a unified controller automates backrest, lumbar pad, and seat adjustments to relieve sp

See how a segmented, hand-shaped head support with foldable palm and finger sections replaces t

See how a movable seat with roller and tilting mechanisms engages core muscles to redistribute

See how an articulated parallelogram structure maintains backrest parallel alignment across ang

See how integrating the armrest support as an energy storage element eliminates separate spring

See how a flexible chair spine adapts to user curvature, enables sidebending and rotation exerc

See how separate vertical and horizontal positioning aids with clearances simplify terminal cou

See how piezoelectric sensors and RFID transponders detect chair occupancy to switch between wa

See how a center post with rotatable arms and telescoping tubes enables side-by-side boat seati

See how parallelogram links, movable arm plates, and a gas lift cylinder enable safe switching

See how force sensors and processors embedded in office chairs detect user posture in real time

See how magnetic plate integration in furniture surfaces enables secure, interchangeable advert

See how a reversible actuator shaft provides both headrest tilt and lumbar adjustment using sha

See how a hinged baseboard and headrest system enables adjustable reclining angles for prone an

See how independent arcuate motion paths for seat and backrest, centered on user mass, enable s

See how pins and mating stop surfaces halt linkage movement in closed recliners, reducing slack

See how repositioning air distribution channels to the seat bottom surface enables climate cont

See how a torsion element connected above the lumbar region enables elastic backrest deformatio

See how a drink holder merged into the center console of a child bicycle seat enables self-serv

See how a segmented footrest contracts during pivoting to fit low ground clearance, then extend

See how a cam-based adjusting mechanism with modular spring and follower units simplifies backr

See how a segmented cable-driven mechanism with nested deformable chambers enables independent