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Patent Information & Production OptionsMultifunctional Screwdriver with Internal Bit Storage and Spring-Loaded Slide · Patent CN208614653U

Patent CN208614653U: bibliographic data, legal status, family, a plain-language reading of the claims, plus customization, US compliance points and how a manufacturing project runs.

At a glance

Patent numberCN208614653U (application CN201821169375)
TypeChina utility model (实用新型) - protects product shape and structure
Original titleA kind of multifunctional screw driver (一种多功能螺丝刀)
Patent ownerIndividual
InventorsLi Li
Filing date2018-07-23
Grant date2019-03-19
Status (China)In force - valid until at most 2028-07-23, subject to annual fee payments
Patent familyChinese filings only - no US, European, Japanese, PCT or other filings listed
Cited by0 later documents
SourceGoogle Patents (search for CN208614653U)

What the claims cover, in plain language

Claim 1 defines a screwdriver with an extension bar, a bit, and a handle. The handle has a cylindrical chamber and a seal cap. A slide bar extends from the cap into the chamber, holding a storage seat for bits. A slide on the bar moves along fixed stops in the chamber. A pop-up spring pushes the slide. A shackle member (lock) engages with a clamping seat to fix the slide bar in place.

Claim 2 adds a sliding sleeve around the slide bar, which connects to the storage seat and the slide. Claim 3 specifies the fixed stops are strip-shaped and distributed on the chamber wall, matching grooves on the slide. Claim 4 notes locating pieces on the fixed stops. Claim 5 details annular slots for the springs. Claims 6-8 describe the specific locking mechanism: a button on the cap moves a self-lock pin, which interacts with an elastic card connector to release the latch.

This is a simplified reading for orientation only. The legal scope is defined by the exact claim wording in the official Chinese document.

What this means for US production

This patent was filed only in China and is currently in force. Making or selling this specific design in China requires the owner’s permission. It has no US counterpart, so it does not restrict manufacture or sale in the United States based on this patent alone.

Two points to settle early:

  • Other patents may exist. Hand tools with integrated storage are a crowded field. Major brands like Stanley Black & Decker, Bosch, and Milwaukee hold numerous patents on bit storage mechanisms, magnetic holders, and ergonomic grips. A freedom-to-operate (FTO) review is essential to ensure your specific implementation of the spring-eject mechanism does not infringe on existing US patents.
  • Mechanism Complexity. The interplay between the self-lock pin, elastic card, and spring requires precise molding tolerances. Variations in material stiffness can affect the “click” feedback and retention strength.

Customization and manufacturing

What can be customized

AreaOptions
Bit CapacityNumber of bits stored on the slide seat (e.g., 4, 6, or 8 positions).
MaterialsABS/Polycarbonate for housing; Steel or POM for slide bar; Stainless steel springs.
ColorsBrand-specific colorways for handle, cap, and button.
ErgonomicsGrip texture, diameter, and soft-over-mold rubber inserts.
Lock FeelAdjust spring constant and latch geometry for desired resistance and click sound.

Things to plan for (US market)

  • ASTM F1394 - Standard specification for hand tools (screwdrivers), covering torque performance and durability.
  • CPSC Safety - Ensure no small parts detach during normal use that could pose choking hazards if marketed near children (though primarily adult tools, packaging warnings apply).
  • California Prop 65 - Screening for lead, phthalates, or other restricted substances in plastics and metal finishes.

How a project runs

  1. Inquiry - Define bit count, target price, and aesthetic requirements.
  2. Design - CAD modeling of the latch mechanism, spring placement, and mold flow analysis.
  3. Prototype - 3D printed or CNC machined samples to test ejection force and locking reliability.
  4. Pilot Run - Injection molding trials, assembly line setup, and quality control checks.
  5. Production - Mass manufacturing, bit insertion, packaging, and shipping.

Quantities & timeline

The handle and cap require injection molds. The slide bar and storage seat also need precision molds. Springs and pins are typically sourced or stamped. Tooling time is moderate due to the complex internal latch. Send us your bit count, material preferences, quantity and target price and we will reply with options.

Patent drawings

Multifunctional Screwdriver with Internal Bit Storage and Spring-Loaded Slide - Patent Fig. 1
Fig. 1 - Overall structure diagram of the multifunctional screwdriver.
Multifunctional Screwdriver with Internal Bit Storage and Spring-Loaded Slide - Patent Fig. 2
Fig. 2 - Exploded view of the component parts.
Multifunctional Screwdriver with Internal Bit Storage and Spring-Loaded Slide - Patent Fig. 3
Fig. 3 - Internal structure with the storage chamber open (bit tray ejected).
Multifunctional Screwdriver with Internal Bit Storage and Spring-Loaded Slide - Patent Fig. 4
Fig. 4 - Internal structure with the storage chamber sealed (bit tray retracted).

Drawings reproduced from the public patent document for reference.

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  1. ✓ Patent vetted China-only family and legal status checked
  2. 2 Product brief · now How it works, uses and options written up
  3. 3 Prototype First samples for buyers to review
  4. 4 Pilot run Small first batch for launch customers
  5. 5 Volume production Repeat orders at scale

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This page is based on the public patent document CN208614653U, assigned to Individual. IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.