Fluid-Pressure Actuators TRIZ Cases

Circumferentially placed piston magnets cut axial length and weight while keeping sensor spacing adjustable and sealing stable.

Using working pistons and pressure-driven control ports, this case removes the servo unit to simplify displacement adjustment and reduce leakage.

A non-back-driving threaded outstop shortens a landing gear shock strut for stowage while preventing spring-driven extension that could damage the gear bay.

A lock ring retainer and spacer let lightweight actuator glands avoid thread shear while securely retaining gland and endcap components.

Sequential cuffs and wipers protect extendable piston rods from dirt and corrosion across the full stroke without excessive rod length or complexity.

Friction heat softens the head flange to fill joint clearance, creating a solid interface that avoids false defect signals in inspection.

Variable-pitch contact surfaces convert rotary actuation into compact drawbar travel, enabling secure self-locking tool clamping in limited axial space.

A gear-linked lock and reset shaft lets missile fins unlock for flight or testing, then be manually returned to the locked position.

A snap-action unstable element stores stroke energy so a pneumatic drive can deliver end-position force with less compressed air and smaller cylinders.

Segmented fluid chambers in flexible inelastic sheets generate muscle-like tensile force with lower medium volume, faster response, and simpler production.

Pretensioned cables and rolling diaphragm actuators convert linear hydraulic motion into high torque rotation with low friction and no motor.

High-frequency radial sensing replaces complex magnetostrictive sensors to measure piston position in sealed hydraulic cylinders.

By integrating the wear ring with a ring magnet, this case shortens the piston body while preserving magnetic position sensing.

Sequential pressure-up events move fluid between chambers so downhole tools can be pressure tested before threshold-based actuation.

A reaction feature at the sidewall transition area limits pivoting, reduces stress, and helps the actuator return after expansion.

A shielded flash chamber enables clean friction welding of a piston to a piston rod after seal placement, protecting seal integrity and weld purity.

A piston finger closes one hydraulic passage near retraction, forcing flow through a smaller path for stable, temperature-insensitive damping.

A piston-driven gear actuator automates CNC vise opening and closing, fits multiple vise types, and maintains clamping force during pressure loss.

A two-region sealing-guiding unit helps hydrostatic actuating pistons absorb transverse loads, cut friction, and reduce leakage risk.

A pivot piston and internal preload device share hydraulic fluid to cut wear, noise, and maintenance in a prosthetic joint.

A low-pressure compliance chamber offsets air-spring stiffening in marine vibrators, keeping resonance stable across changing depths.

Tube material is crimped into annular grooves to retain and seal hydraulic cylinder heads and caps without threads, welds, or retaining rings.

A ball-joint and knuckle breakaway support cuts landing gear assembly tolerance issues and lowers actuator release loads to protect the fuel tank.

Radially movable obstacles on elastic blades lock a telescopic rod without a locking piston, improving locking reliability and controlled release.

Bearing support constrains piston misalignment in a rotary actuator, boosting torque while cutting seal wear, friction, and heat.

A rotatable magnet holder places the piston magnet near the tube wall to shorten piston length and tune sensor distance without losing sealing.

A threaded, interchangeable tool-unit layout lets one hydraulic tool handle both pulling and pressing, cutting equipment and maintenance costs.

Real-time position, pressure, and temperature monitoring helps anticipate hydraulic cylinder leaks and rod failures before mold downtime.