Plungers TRIZ Cases

Segmented skirt walls with local reinforcement balance weight reduction against thermal stress limits in diesel engines.

A linear actuator uses a D-shaped anti-rotation member to constrain shaft movement within a polygonal bore.

Cast metal inserts reinforce the piston head area, resolving weight-strength trade-offs in internal combustion engines.

Asymmetric pin bore geometry reduces tangential stresses at the zenith area, extending piston service life under gas pressure and inertia loading.

A molded plastic primary piston with a metal insert resists mechanical stress from the push rod, reducing fluid hammer noise during rapid release.

Integrated setting means merges aligning guides with pressure reduction suction devices to reduce apparatus complexity while maintaining adhesion accuracy.

A pneumatic cylinder uses a pressure-tight seal on the piston rod passage to prevent liquid ingress in submerged applications.

An inhibiting layer on the crosshead pin resists oil pressure deformation, preserving bearing reliability during variable compression adjustments.

A shaft coupling structure uses engagement projections inserted into slot grooves to join piston rods and pistons without tools.

Supporting ribs in the cast piston skirt include recesses facing the piston base, reducing weight while maintaining structural rigidity.

Pre-mounted sleeves on actuating pistons simplify shift rod assembly while increasing load-bearing capacity.

Variable thickness skirt walls manage stress distribution to improve rigidity and reduce weight in internal combustion engine pistons.

An intermixture layer between a resin undercoat and silver coating prevents peeling on aluminum bases, avoiding electroplating complexity.

Segmented light alloy body and replaceable bronze sleeve resolve weight versus wear trade-offs in aircraft landing gear steering actuators.

A radially displaceable bushing assembly adjusts position to maintain seals between a piston and input shaft.

Segmenting the coupling into dedicated compression and tension rods eliminates fatigue from alternating stresses, reducing weight while maintaining reliability.

Matching tapered surfaces on the piston rod and head generate radial locking forces that withstand sudden pressure spikes.

Incremental track rotation via a ratchet lock mechanism resolves large turning radii and tight space maneuvering constraints.

Sintering silver particles on an aluminum base eliminates weak adhesion and exfoliation risks while maintaining high thermal conductivity.

A galleryless steel piston uses a low heat transfer coating on the crown to reduce thermal loads.

A segmented piston skirt coating uses a lubricated outer layer to reduce friction during engine operation.

Direct electrovalves with periodic pulses adjust eccentric cam position to minimize fluid leakage while maintaining hydraulic circuit pressure.

Horizontal and inclined grooves on a piston skirt retain lubricating oil at high pressure zones, reducing frictional resistance and improving fuel efficiency.

Friction stir welding refines the base grain structure, stabilizing fixation against impact while reducing machining costs.

Segmented resin coating films create net-like grooves that supply engine oil to recessed parts, reducing friction and fuel consumption.

Teeth on the outer surface engage the groove to limit rotation, preventing wear and inadvertent release in engine piston assemblies.

A single-acting pneumatic cylinder uses a hollow piston rod and elastomeric ring to enable arcuate movement of the push rod.

Nested head and rod covers with projections reduce longitudinal dimension while maintaining airtight seals without bolts.

A hollow piston pin assembly with an internal viscoelastic mass delays lateral motion acceleration, reducing engine noise and friction.

Inner sleeve profile prevents core axial displacement while controlled compression builds pressed composite tensions for higher pin strength.

Segmented piston rod limits screwing depth to prevent pressing rod bending while enabling dual operation modes in compact single acting hydraulic cylinders.

Variable cross-section piston maintains wall contact to prevent food residue accumulation.

A piston and connecting rod combination uses a form-fitting rotational lock to simplify assembly.

A tapered plunger pump barrel seal prevents solids from accumulating between the plunger and pump barrel.

A piston pin features a diamond-like carbon coating applied to specific angular sectors to reduce friction and extend component lifespan.

Gradually thickening connecting sections between piston skirts and aprons maintain uniform contact pressure, reducing frictional forces and wear.

Flat relief recesses in sliding shoes stabilize hydrostatic axial piston machines by reducing material displacements and smearing.

One-piece anchoring pin secures piston contact while reducing assembly time and part count.

A cermet body distributes magnetic metallic particles throughout a ceramic matrix to enable electrical discharge machining.

Emergency guiding outer walls on a piston pin contact the cylinder liner during demolition events to constrain connecting rod movement.

Segmented rings direct lubricant to planetary gears, preventing leakage across the housing gap without machining internal channels.

An eccentric piston sliding within a tubular case converts rotational motion to linear displacement through integrated nut and screw portions.

Segmented resin coatings resolve the trade-off between low friction and wear resistance in internal combustion engine pistons.

Asymmetric connecting walls merge flush into the hub support area of an internal combustion engine piston.

A composite piston pin uses a multi-layer coating to lower the friction coefficient.

Axial drain passages centered at opposite box sides improve oil drainage and reduce carbon buildup in long stroke diesel engines.

A retraction ball forms a sealed pressure chamber that counters eccentric relief forces, preventing cylinder drum lift-up in hydrostatic axial piston machines.

An asymmetric radial recess below the annular groove maintains contact surface area while providing oil drainage volume to resolve load-bearing contradictions.

A piston pin bore with high ovality in the zenith region and circular-cylindrical geometry in the nadir region minimizes play between components.

A flexible resin layer on the expansion piston maintains gas lubrication clearance in a stirling engine.