You can freely build on How a Spring-Loaded Pocket Dispenser Works

What this patent covers

The device functions as a compact storage unit designed to hold a stack of flat, uniform items. It utilizes a spring-loaded platform inside the casing that exerts constant upward pressure on the contents. When the user interacts with the top of the container, the spring ensures the next item is automatically positioned at the dispensing opening, allowing for one-handed retrieval.

What is now free to use

All 0 claims of US 2620061 are in the public domain. Specifically:

The 0 dependent claims add narrowing limitations and are also free.

What is NOT covered

Patent expiry frees this specific invention. Separately-patented improvements made after expiry may still be protected.

• Does not cover containers that rely on gravity rather than spring tension to feed items.

• Does not cover non-pocket-sized dispensing systems like large industrial vending machines.

• Does not cover electronic or automated dispensing mechanisms that require a power source.

Who is building on this today

Companies specializing in consumer packaging and confectionery, such as the manufacturers of Pez, continue to utilize variations of spring-loaded dispensing mechanics for small, stackable items.

Products built on expired version of this technology

How to cite this patent in your documentation

Individual. US Patent 2620061. Pocket article dispensing container. Granted 1952, expired 1969. Now in the public domain.

Note: This is a convenience citation. Consult a patent attorney for formal freedom-to-operate analysis.

PatentBrief is an educational resource and does not provide legal advice. Patent expiration information is derived from USPTO records and may not reflect continuation patents, divisional filings, or separately-patented improvements. For commercial use or production decisions, obtain a formal freedom-to-operate (FTO) opinion from a registered patent attorney.