Contracting/Expanding Measuring Chambers TRIZ Cases

See how a non-uniform wobble plate with varying wing thickness adjusts liquid-to-air ratios in

See how a fluid dispenser generates two distinct sounds through temporally separated air blasts

See how a cap attachment with tube, liquid container, and restrictor enables sequential dispens

See how a rotating pressure cap and leaf-spring piston mechanism enable precise dose control an

See how a dual-chamber piston pump discharges liquid and air on the withdrawal stroke to produc

See how an adjustable cam surface enables dosage adjustment without disassembly, preserving loc

See how a cap-and-tube attachment dispenses concentrated tastant before beverage to enhance tas

See how a fluid pump generates temporally separated sounds using pressurized air and segmented

See how a multi-lumen dispense passage separates air and liquid until mixing at the nozzle, pre

See how asymmetric key elements and keyways limit cartridge compatibility by shape, size, and r

See how a single drive gear selectively meshes with multiple feed tubes to reduce motor count a

See how an adjustable cam surface enables dosage changes without disassembly, maintaining lock-

See how manual dispensers generate electrical energy from activation motion to measure fluid vo

See how a cam-based intermediary positions the pump at different extended points before actuati

See how a fluid pump uses multiple air-driven sound generators with timed operation to create d

See how a piston-seated dispensing chamber replaces complex pump mechanisms to enable precise f

See how a reflux mechanism allows excess cooking oil to flow back from the metering compartment

See how a manual dispenser converts user activation into electrical energy via piezoelectric ge

See how a pump with a skirt-enclosed receiving tube extracts 98% or more of liquid contents fro

See how a segmented mold with replaceable slides enables cost-effective overtube design variety

See how a segmented bulk dispenser uses separate storage and dispensing chambers to simplify ma

Manual pump motion generates power for corona ozone production and foam dispensing, avoiding batteries while supporting disinfection and fluid tracking.

A movable piston, dosing chamber, and vent path enable controlled dispensing and recharging of viscous products without leakage.

A threaded rod and movable diaphragm set a precise liquid volume, then dispense it through a bottom outlet without separate measuring cups.

Complementary key elements and keyways block incompatible cartridges while automatically aligning the piston and actuator for reliable dispensing.

Manual pumping generates power for ozone production and fluid measurement while dispensing ozonated foam without batteries.

A shared-piston dual-pump assembly mixes liquid with air to dispense foam or mist with less liquid and less runoff.

A removable two-level drip tray adapts to short cups and tall glasses while simplifying liquid collection, emptying, and cleaning.

An air-porous, liquid-blocking valve vents trapped air during pressurized e-liquid refilling, improving cartridge fill reliability without leakage.

An intermediate container with an integrated metering cylinder and sealed piston improves electrolyte filling precision without added complexity.

Pneumatic vial pressurization and a sliding dual-needle adapter simplify sterile reservoir filling while improving infusion pump reliability.

A reusable fill adapter uses air pumping, dual needles, and a sliding carriage to transfer vial fluid into an infusion pump reservoir reliably.

Sensors trigger a temporary wider feed gap to clear coarse-particle blockages while preserving metering continuity and limiting material use.

A piston-mounted valve closes leak paths yet opens on reverse stroke for fast chamber refilling, precise dosing, and lower temperature sensitivity.

Ultrasonic sensing records IV bolus medication volume and time, then alerts clinicians when delivery conflicts with patient records.

A plastic spring and valve disc make the dispenser easier to recycle while a fixed outlet improves dosing accuracy and avoids liquid contamination.

Acoustic volume sensing and trajectory recalculation keep a wearable infusion pump on schedule while reducing malfunctions and relocation needs.

An elastic valve matched to the pump head surface drains fully after dosing, preventing residue, contamination, and sticking parts.

Acoustic volume sensing and trajectory recalculation help a wearable infusion pump maintain accurate fluid delivery with fewer malfunctions.

A separable flow sensor and reusable base automate IV bolus recording and inconsistency alerts to reduce bedside medication errors.

Ultrasonic sensing and wireless documentation track IV bolus concentration, volume, and time while alerting clinicians to record mismatches.

A separable piezo flow sensor and reusable base automate IV bolus recording and alert clinicians to medication inconsistencies.

Real-time acoustic volume sensing lets a wearable infusion pump recalculate delivery schedules for more consistent fluid dosing.

A form-fit elastic valve empties the pump head fully in storage, preventing residue drying, contamination, and metering failure.

Independent dual plungers separate fine pressure control from larger air displacement, improving pipetting accuracy and volume handling.

Capacitance sensing through a syringe wall replaces indirect mechanical monitoring, using shielded electrodes for accurate real-time drug content measurement.

Distance sensing between moving housing sections tracks remaining liquid in a shrinking reservoir and helps prevent unexpected emptying.

Pressure-based fluid metering replaces mechanical actuators to deliver precise, rapid solids discharge in a self-emptying separator.

Pre-marked color zones on a liquid medicine dispenser replace weight-based dose calculations, reducing pediatric dosing steps and errors.

Flexible pinchable lines replace check valves in a single-use volumetric pump, enabling precise small-volume aseptic dosing with less validation time.

Alternating two measuring and filling paths raises particulate filling capacity while preserving accurate volume measurement in a compact layout.

A spring-driven piston compresses air through a Venturi tube to atomize transdermal liquid without gas cartridges or external compressors.

Alternating two filling sections after measurement boosts particulate filling capacity without enlarging the turret or sacrificing volume accuracy.

A rotating cap and piston use a 180° fill-dispense cycle to deliver accurate doses from standard containers without bulky custom mechanisms.

Independent dual plungers vary air displacement and channel pressure to improve aspiration and dispensing accuracy in automated liquid handling.

An indexed telescopic chamber and threaded shaft dispense a fixed cream dose per turn while showing remaining content with click feedback.

A geared scroll wheel and plunger translate one-handed input into precise fluid dosing with feedback, limiting leakage, excess extrusion, and waste.