You can freely build on How Floyd Smith Designed the Modern Parachute Pack and Harness
This patent expired in 1940. Every claim — 0 independent, 0 dependent — is now unenforceable. Anyone can use, reproduce, manufacture, sell, or offer for sale this technology without a license.
Original assignee
FLOYD SMITH AERIAL EQUIPMENT C
Patent granted
1923
Expired
1940
Forward citations
5
What this patent covers
The patent describes a wearable parachute system that secures a folded canopy in a pack attached to a pilot's back via a harness. It focuses on the mechanical integration of the parachute container with the straps that distribute the shock of deployment across the user's body. By keeping the parachute as a self-contained unit worn by the pilot, it allowed for a quick exit from an airplane in an emergency, rather than requiring the parachute to be fixed to the aircraft structure.
What is now free to use
All 0 claims of US 1462456 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 the aerodynamic design or folding pattern of the parachute canopy itself.
Does not cover automatic deployment mechanisms or barometric triggers.
Does not cover emergency ejection seats that use explosives to propel the pilot.
Who is building on this today
Modern aerospace companies like Airborne Systems and various skydiving equipment manufacturers continue to refine the harness and container geometry established by these early designs.
Products built on expired version of this technology
Standard military emergency bailout parachutes
Modern skydiving container and harness systems
How to cite this patent in your documentation
FLOYD SMITH AERIAL EQUIPMENT C. US Patent 1462456. Parachute pack and harness, etc.. Granted 1923, expired 1940. 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.