Operating Chairs TRIZ Cases

A linked seat and back platform uses circular and eccentric motion to support safe transitions between sitting, lying, standing, and inverted positions.

Skewed cranks in a chair tilt linkage raise the front seat more than the rear, improving posture with a simpler, lower-cost mechanism.

A flexible pressure element in the seat-frame slider keeps guide rails clearance-free, cutting rattle noise, wear sensitivity, and cost.

A curved-base mattress creates a horizontal treatment surface on a dental chair, enabling secure in-room conversion for surgical and other procedures.

A pivoting thigh support and pelvic cradle let users vary seat angle, maintain spine alignment, and reduce mechanism complexity.

Non-concentric dual tracks guide wheelchair seat tilt to limit center-of-gravity shift, reducing falling sensation and adjustment burden.

A sliding pillow on guided tracks lets a folding chair support the head or lumbar area while adapting to upright and reclined seating.

A motor-driven tilt guide and transmission assembly reclines the exam chair smoothly while maintaining patient body alignment and comfort.

A rotating seat head rest shifts between lowered and inclined raised positions to free cargo space, improve visibility, and restore head support.

A rotatable seat cradle with integral lumbar and cushion sections keeps the spine and hips aligned as users shift weight.

A spring-biased rear portion lets the head restraint thin when the seatback folds, freeing cargo space while preserving upright head support.

A movable outer hemisphere over a fixed inner seat maintains spinal alignment while allowing balanced motion to reduce back and neck pain.

An elastic lower column coupling lets a chair tilt in any direction while keeping seating stable and reducing fall risk and floor damage.

A permanently attached straw wrapper cuts litter, while a bifurcated end opening filters seeds and pits without extra components.

A decoupled footrest and conditional rocker mechanism let the chair rock upright, lock when reclined, and add damping for smoother motion.

A sliding lower head support deploys for neck comfort and retracts flat to avoid shoulder intrusion and ease seat stowage.

Tapered receiving holes hold dental burs with different shank diameters in one organizer, improving selection speed, retention, and sterilization.

Path-joint platforms and an actuator let furniture shift safely between sitting, reclining, lying, and standing positions with locked support.

Indexed side rails and releasable clamps enable modular SBRT immobilization with precise, repeatable setup and easier patient transfer.

A rotatable key, alignment guides, and spring-biased push button enable quick headrest adjustment with secure locking and alignment feedback.

A sliding seat and linked reclining back keep the head near the washbasin while preserving working space behind the chair.

Curved guiding grooves and a torsion spring move the chair seat to keep the sitter's back against the backrest with adjustable support.

Interlocking planetary gears and sun gears synchronize right and left seat frames for smooth lifting, lower foot collision risk, and simplify assembly.

Adjustable friction and an eccentric hinge let the neck rest hold position over wear while improving comfort across user seating positions.

Adjustable head and neck support, dual-use armrests, and integrated stowage improve passenger comfort without disturbing tray tables or displays during recline.

Convex seat and backrest geometry aligns the hip and spine for female users while reducing fatigue, disc pressure, and adjustment complexity.

A double torsion spring rotates the head restraint into a comfortable use position while preserving rear visibility and occupant protection.

A shaft-hub seat pivot uses elastic return and selective friction to hold a chosen angle, prevent unwanted rotation, and support height adjustment.

A headrest control apparatus drives the seat back forward based on rear radar signals and holds it in position using a motor.

Interchangeable support elements orient the needle housing for left-handed use, resolving adaptability constraints without increasing device complexity.

Scissor lift mechanisms lower the seat to ADA standards while radiolucent backrests enable X-ray imaging without structural compromise.

Integrating tilt and lift mechanisms via a shared pin reduces part count, simplifies assembly, and widens space within the seat cushion.

Movable hose support along dental instrument arm adjusts removal resistance, resolving trade-offs between adaptability and structural complexity.

A rear dental delivery system uses a pivotably mounted movable arm to adjust component positioning for improved workspace efficiency.

A neck pain relief device uses a type I lever to support the head and distribute weight.

Separate hinge shafts and a locking actuator enable independent folding of the center seat back, preventing unwanted dive operations that reduce riding comfort.

Revolving arms stabilize bracket tables and light transmitters project patient data onto the treatment area, eliminating eye diversion from separate monitors.

Anatomical depressions stabilize the radius and ulna while a transparent compression unit applies adjustable pressure to achieve haemostasis.

Segmented support brackets and cushioning foam constrain excessive downward displacement of the tip-up seat during a crash event.

Configurable programmed functions customize dental unit control operations via foot controls, reducing user interface complexity and error likelihood.

A padded forearm support device uses a vertical groove and strap to suspend the limb in an elevated position.

Segmented cover parts and a sealing element with integrated lighting resolve the trade-off between structural integrity and accessibility in dental care units.

A vehicle seat interlock mechanism controls seat cushion movement relative to the frame member during reclining operations.

A patient support apparatus with a deployable backrest support member enhances stability during emergency procedures.

Pyramidal projections on a foam cushion insert enhance frictional retention for endodontic files.

A therapy armrest uses a lever-driven sliding element to engage separate toothed assemblies for independent tilt and rotation locking.

A vehicle seat uses a direct articulated joint between the cushion and backrest to enable compact folding.

Dynamic surface deformation via actuators resolves the trade-off between drag reduction and thermal regulation efficiency.

An integrated strap slot on a foam cushion secures the device to furnishings, resolving the contradiction between comfort and consistent limb positioning.

Rotatable connectors between flexible modules allow the guide rail to bend, enabling a 180-degree flat position while reducing vibrations.

Tapered protrusions in a dental liquid processing nozzle increase flow velocity to generate cavitation, suppressing biofilm formation in small diameter piping.

Interface unit converts microprocessor torque signals into real-time graphical viewing fields on the dental unit display screen.

A vehicle seat assembly uses a sliding unit to move the headrest rearward during folding operations.

A fold and tumble mechanism uses a cam to engage the recliner release lever for automatic seat pivoting.

A vehicle seat cushion rocks on a track to adjust thigh support.

Dual linkage system moves vehicle seat squab element between positions with biasing elements, resolving locking security and operation complexity.

A patient examination system uses motion-controlling assemblies to adjust a seat, back, and footrest subassembly for multiple positions.

Segmented pawl design withstands heavy patient loads while maintaining easy one-handed adjustment.

A seat slide device adjusts movable portions to reduce movement resistance and prevent rattling.

Computerized control unit interpolates handpiece torque data for immediate display to dental surgeons.

A telescoping femoral support system moves a leg deck axially to apply controlled traction during surgical procedures.

An asymmetrical support device with an adjustable top surface and curved front arc provides stable hand positioning.

Sensors detect handpiece motion to illuminate specific flow control adjusters, eliminating confusion between remote knobs and instruments.

Parallel resilient metal wires bias elastic portions in plastic sleeves, maintaining tolerance compensation across temperature variations without noise.

Vertical arm positions X-ray source above patient chair, eliminating separate imaging rooms and treatment interruptions.

Vacuum suction removes pathogens at origin, preventing transmission while maintaining procedural access.

Wireless communication between seat controls and a common unit eliminates complex wiring, reducing assembly costs and corrosion risks.

A wearable patient positioner uses shoulder restraints and securement straps to retain patients on procedure tables.

Disc recliner pivots rear legs to transition between seating, slouch, and stadium positions, resolving storage space versus passenger comfort trade-offs.

A convertible arm cradle merges support and sling functions to immobilize the shoulder during sleep and waking hours, preventing injury from rolling.

A shoulder orthosis uses a cable drive to stretch tissue around the joint.

An integrated transverse support stabilizes seat tracks and actuates locks, reducing installation space and production costs.

Graded hardness on a convex surface reduces pain while engaging pelvic floor muscles for posture correction.

A chair-mounted electromagnetic field generator supports image-guided surgery navigation.

Internal reading means captures tag data before removal, resolving identification failures caused by quick displacement or short sensor range.

An integrated switch assembly disables the power recliner motor when the easy entry mechanism activates, preventing gear damage from manual pivoting.

Internal shear reduction layer enables dynamic translation between cushioning layers to absorb friction forces.