Other Pens TRIZ Cases
- Writing Tool Refill Circulation Path for Smooth Ink Supply
Multiple inlets in the refill circulation path keep ink moving smoothly to the pen tip while limiting leakage and maintaining supply near empty.
- Writing Implement with Retractable Ink Core for Variable Line Width
A flexible core surround lets the capillary-fed ink core retract under pressure, varying line width while limiting leakage and blocked ink discharge.
- Reservoir Writing Pen with Micro-Porous Air-Pressure Balance
A micro-porous writing-pen structure balances reservoir air pressure, maintains ink flow, and simplifies assembly for lower production cost.
- Photochromic Light-Emitting Writing Implement for Ink-Free Erasure
This case uses wavelength-controlled light in a writing implement to change and erase markings on photochromic surfaces.
- Switchable Flow Nib for Capless Writing Instruments
A writing instrument nib uses switchable flow material to control ink movement via electrical or thermal stimuli.
- Felt-Tipped Feeding Assembly for Standard Aqueous Ink Cartridges
An ink flow regulator and capillary channels enable universal cartridge compatibility while maintaining precise aqueous ink delivery.
- Valve-Type Writing Instrument Ink Reservoir with Radial Slits
Radial slits in a truncated cone reservoir maintain constant core contact, preventing tip damage from frequent valve operations and eliminating ink dripping.
- Sintered UHMWPE Tip Body for Thick-Line Ink Feeding
Porous sintered polyethylene tips absorb viscous liquids via capillary action, resolving insufficient ink flow for thick line writing.
- Capillary Felt-Tip Pen With Air Replacement For Consistent Line Width
An air replacement mechanism drives ink through a porous central core via capillary action, maintaining consistent line width throughout use.
- Retractable Writing Utensil Airtight Valve Sealing System
An airtight valve seals the writing tip upon retraction, preventing ink drying while allowing integrated eraser use without cap loss.
- Self-Retracting Sealing System for Writing Instruments
An automatic sealing member opens and closes the writing passage during cartridge movement, preventing ink drying and environmental damage.
- Writing Instrument Actuator Mechanism for Automatic Retraction
An actuator with a cam mechanism automatically retracts the writing element to prevent drying without requiring manual cap management.
- Pen Tip Ink Feeder Capillary Action Viewer Area
Slits and bumps in the ink feeder enhance capillary flow, preventing obstruction of the viewer portion for clear writing direction recognition.
- Valve-Free Felt Pen Nib With Micro-Relief Baffle
Micro-reliefs on the nib surface act as a baffle to prevent ink leakage while maintaining internal air balance without complex valves.
- Porous Nib Filament Ink Reservoir Pigment Drain Back
A porous filter in the nib and filament structure blocks pigment from draining back into the reservoir during tip-up storage, preventing clogging.
- Liquid Crystal Display Radially-Inclined Domains Viewing Angle
Radially-inclined liquid crystal domains stabilize production and uniformity by suppressing light leakage while maintaining high contrast ratios.
- Fibrous Nib Void for Unobstructed Writing Surface View
Segmenting the nib into upper and lower portions creates a viewing corridor that eliminates line-of-sight obstruction during wide-line drawing.
- Electromagnetic Pen Variable Inductance Design
A variable inductance electromagnetic pen uses a three-iron-core structure to transmit signals.
- U-Shaped Writing Tip for Multi-Function Versatility
Segmented tip geometry resolves versatility complexity trade-offs.
- Deformable Nose for Dual-Tip Writing Instrument
A deformable nose with a longitudinal slit adapts its opening diameter to accommodate concentric writing tips within the housing.