Operating Chairs TRIZ Cases

Movable seat and back platforms use actuators and path joints to support safe transitions between sitting, reclining, and lying positions.

A movable back plate tracks body motion during chair tilt to prevent slippage, improve comfort, and maintain healthy spinal posture.

A hook-shaped bearing profile and planar arm secure the headrest between shell and padding, improving alignment, stability, and seat comfort.

Asymmetric front and rear leg spacing with notched casters lets chairs stack and nest tightly while reducing storage floor space.

A transverse-member seat pivot with opposed bearing areas and an integrated stop lets nestable chairs rotate upright for compact storage.

A removable support member gives a feeding pillow selectable firmness, better baby positioning, easier cleaning, and fit for different users.

Manual and automatic lock linkages let a glider-recliner glide upright but stop motion in the fully reclined position for safer, easier use.

A rotatable backrest, gear rack, and hydraulic brace let tattoo clients hold comfortable poses while improving access to different body parts.

A viscoelastic foam pad and table fasteners distribute pressure and limit patient sliding during steep Trendelenburg procedures.

A pivoting armrest adapter keeps the patient's arm stable through chair recline, improving IV access without multiple armrest sets.

Bendable ear supports and 8 kHz acoustic filtering reduce dental instrument noise discomfort while preserving dentist-patient speech.

A viscoelastic foam pad uses body-conforming support and friction to limit sliding and reduce pressure injuries on inclined operating tables.

A lift link, cam flange, and oblong aperture let a rocker-recliner raise the seat and rotate the backrest into a nearly flat sleeping surface.

Telescopic side supports and an auxiliary seat portion let one wheelchair adjust seat depth for different patients while reducing fleet size.

A hinged, telescopic legrest with a gas spring supports calves and feet while stowing compactly in space-constrained aircraft seats.

A pivoted seat-back linkage and single control lever simplify recliner angle adjustment while keeping seat motion synchronized and armrests usable.

A sliding pillow on guided tracks lets a folding chair shift between upright and laid-back positions while improving comfort without complex structure.

A segmented carrying arm synchronizes seat and backrest motion through elastic deformation, improving posture support without heavy intermediate mechanisms.

A spiral jaw clutch replaces weak nut-and-bolt chair locks to deliver precise seat positioning, stronger locking, and long-term reliability.

A two-phase linear actuator extends the footrest before reclining the backrest, enabling compact powered rocker recliners without crossbeam interference.

Slow, event-based seat actuator movements vary position over time to reduce fatigue, stiffness, and circulation problems during long drives.

Compound curves and non-porous molded construction give stable ergonomic support for water birth while reducing contamination risk.

Slot-guided drive rails and adjustable linkage geometry let aircraft seats tune seat back and pan angles from upright to flat positions.

A folding seat bottom and forward-moving seat base open clearer access behind the seat without relying only on a tilted seat back.

A dilatant front pad stays soft for comfort but hardens on rear impact, enabling a thinner headrest that better suppresses head movement.

An articulated vertebral column with spring bands lets portable seating or tables fold compactly yet return to a stable support surface.

A segmented movable seat shifts one portion away from the legs during standing transition to improve comfort, range of motion, and support.

A screw rod and pulling-line handle combines tilt locking and seat adjustment in one compact chair chassis control.

A sliding seat and shaft-locking mechanism lets a child chair switch between stable high-chair use and rocking motion with easy adjustment.

An integrated recline and seat-adjustment mechanism replaces multiple actuators while easing disassembly and recycling of chair components.

A hollow head cradle with movable inner and outer shells cuts head impact loads while enabling adjustable headrest height in child restraints.

A rounded stool base and under-seat mass create stable tilt and dynamic seating without the distracting form of an exercise ball.

A motorized torque-tube and rotation-link mechanism enables zero-gravity rear tilt or forward lift while maintaining wall clearance.

An actuated flexible seat extension enlarges the seating area to support different leg sizes while keeping the seat compact and adaptable.

Flexible internal and external seat members raise and extend the front edge to support different leg sizes and seating positions.

A removable snap-fit armrest shroud separates upholstery from the seat frame, cutting repair time without removing the aircraft seat.

A two-axis pivoting femoral support improves leg positioning and dorsal or ventral traction while maintaining stable pelvic support during hip procedures.

A flexible mesh core lets the backrest wrap the body and bend the upper section rearward, improving chair comfort without rigid frame members.

Meshed pinions and interlocking friction elements keep a movable head support parallel in X-direction travel while preventing tilt and locking position.

A laterally oriented backrest spring frees under-seat space, lowers spring cost, and enables adjustable rocking hardness and recline angles.

A ball-joint mount on the dental light keeps the patient display in direct view without bulky ceiling arms or extensive wiring.

Curved rod ends lock into headrest recesses to resist asymmetric rotation while improving load capacity, safety, and manufacturability.

An asymmetric post and throat opening enable surgical post removal by rotation instead of axial pull, reducing tissue resistance during surgery.

Closed-cell EVA seat shells combine foam, trim, and molded attachment features to cut assembly time while improving cleanability and durability.

Guided load-sharing members and a lift tube simplify power lift chair motion, reduce leg effort, and support more seating positions.

A rotatable split-chair structure supports multiple tattooing positions, then folds compactly and converts into a pushcart for easier transport.

A twisted cyclic elastic member simplifies chair assembly while improving rebound comfort, fatigue resistance, and service life.

A limiter keeps the transfer linkage and arm from over-collapsing, improving force transfer and reducing strain on recliner linkages and motors.

A control rod and movable locking piece simplify multi-angle seat tilt adjustment while reducing operating effort and component complexity.

A removable headrest uses vertical slide-on support members to transfer load to the wheelchair frame without tools, improving stability and portability.