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The R38L Cordless Spring Drive is a 38mm modular internal spring system engineered for manual cordless zebra blinds, offering load-balanced lift, controlled braking, and scalable OEM configuration.
The L3 Cordless Spring Mechanism for Venetian Blinds is the ultimate window covering system for the modern home or office. Offering superior safety features, advanced technology, and stylish design, it’s the perfect solution for anyone looking to enhance their space while maintaining a child- and pet-safe environment. Its reliability and ease of use make it a smart investment for homes, offices, and commercial spaces.
The L6 Faux Wood Blinds Cordless Upgrade Kit transforms your faux wood blinds into a cordless system, offering ease of use, optimal light control, and a safer environment, ideal for modern homes.
The L11 Cordless Spring System offers tangle-free, smooth, and child-safe operation for Honeycomb Shades. With its durable POM spring box and constant-force spring, it ensures reliable, easy-to-install performance, perfect for both residential and commercial spaces.
The DOSRON Cordless Spring System with 38ZB spring box is an in-tube lift core designed specifically for cordless zebra blinds using Ø38 mm aluminum tubes. With a low-friction POM housing, 301 stainless-steel constant-force spring and modular shaft options for 2–5 spring boxes, it lets OEM brands precisely match lift force to fabric and bottom rail weight while keeping a clean, safe and quietly operating cordless design.
DOSRON Child-Safe Window Covering Solutions are built for OEM blind brands and fabricators who need a scalable path to safer products. The platform is cordless-first, centered on Cordless Spring Lift systems that eliminate front-facing pull cords and beaded chains. Where remote control or smart-home integration is required, DOSRON offers Hybrid Spring + Motor architectures. For SKUs that must retain a looped chain, DOSRON provides safety clutch kits with a compliant Tension Device to control risk and support proper installation.
This solution set covers roller blinds, zebra blinds, honeycomb shades, faux-wood Venetians, and Roman shades, helping brands meet modern cord-safety expectations such as ANSI/WCMA A100.1-2022, CPSC 16 CFR 1260, and EN 13120—while still delivering a quiet, smooth, installer-friendly user experience.
The L11 Cordless Spring Mechanism combines an L11 Spring Box with 1″ Cord Bases to lift fabric Roman shades from inside the headrail, delivering a smooth, cordless user experience that looks cleaner, feels lighter and helps OEM brands meet modern child-safety expectations.
The DOSRON cordless blind mechanisms manufacturer specializes in spring-based, in-tube cordless lift systems for OEM window-covering brands. Instead of finished blinds, we supply the core hardware – constant-force spring units, cordless lift modules, brakes and adaptors – that make child-safe, quiet and durable blinds possible across roller blinds, zebra blinds, honeycomb blinds and faux-wood Venetian blinds.
By standardizing on DOSRON’s cordless mechanism platform, OEM partners can keep their existing tubes and headrails, reduce re-tooling costs, and upgrade from corded and chain-operated systems to modern cordless, safety-compliant blind programs for residential, hospitality, education and smart-home projects.
The DOSRON custom window blind clutch systems are designed for OEM brands that need a stable, modular platform for roller blinds. Using a high-precision gear train, POM / reinforced nylon housings and steel drive shafts, these clutches deliver smooth lifting, quiet operation and secure holding across a wide size range. With modules for Ø25 / Ø28 / Ø32 / Ø38 mm tubes, multiple gear ratios and plastic or metal chains, they adapt easily to residential, commercial and hospitality projects. Paired with DOSRON cordless spring units and battery tubular motors, they help build a scalable, safety-first blind portfolio.
The DOSRON Cordless Spring Unit Device for Child Safe Window Coverings is a sealed constant-force lift core that replaces exposed cord locks and bead chains in modern blinds. Installed inside roller tubes or headrails, it balances shade weight for smooth, “zero-gravity” lifting and quiet operation. By removing front cords, the system helps OEM brands build child-safe roller shades, honeycomb shades, Roman shades and Venetian blinds that meet North American and European safety expectations. With adjustable pre-tension, multi-tube compatibility and long cycle life, it is an OEM-ready platform for upgrading existing collections to cordless, safety-focused window coverings.
The DOSRON Hybrid cordless spring and motor kit for Venetian blinds is a headrail-ready drive platform that combines a constant-force spring lift unit with a DT25 low-voltage battery motor. It delivers fully cordless faux-wood, composite, and aluminum Venetian blinds that can be operated manually or by motor, while the spring continues to support the slat stack even if power is off. Designed for OEM and private-label programs, the same system can be configured as cordless spring-only, hybrid spring + motor, or motor-only, helping brands meet child-safety, quiet-operation, and smart-home expectations in North American and European markets.
If you are interested in our solutions, please leave us a message. Let us provide a complete solution tailored to your specific situation.
No. This system is engineered for manual cordless zebra blinds. Hybrid motor-spring platforms use different control logic.
It depends on measured fabric + bottom rail weight and required drop. Use the selection table to choose model and quantity per Shaft.
Pre-winding stores initial energy so the system enters the intended force band immediately. The Pin locks the pre-tension state.
Not reliably. The Spring Box defines the force band; the Brake only governs motion within it. Correct selection comes first.
Yes, but only with proper load calculations to keep force distribution stable across the full travel.
Dosron designs high-performance spring systems and motors for cordless blinds.
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E-Mail: Aaron@dosroninc.com
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