How High-Altitude Parafoils Use Spring-Loaded Rods to Open Automatically
A system for high-altitude balloons that uses flexible, spring-loaded rods to force a parachute-like wing to snap open in the thin air of the upper atmosphere.
Original patent title: “Rigidized assisted opening system for high altitude parafoils”
A system for high-altitude balloons that uses flexible, spring-loaded rods to force a parachute-like wing to snap open in the thin air of the upper atmosphere. Granted to World View Enterprises Inc in 2023 with 19 claims and 4 forward citations.
Key facts
Coverage
What does this patent actually cover?
This patent describes a mechanical assist system for opening parafoils at extremely high altitudes where the air is too thin for traditional ram-air inflation to work reliably. It uses two elongated wing tip supports that are hinged to a base structure. When the parafoil is packed into a bag, these supports are bent, storing potential energy like a spring. Once the restraint is released, the supports snap back to their original shape, physically pushing the canopy open so it can catch the sparse air and begin flight.
The gap
What does this patent NOT cover?
- Does not cover parafoils that rely solely on ram-air pressure for inflation without mechanical assistance.
- Does not cover non-hinged or non-flexible structural support systems.
- Does not cover deployment systems that use pyrotechnic charges or explosive bolts to force canopy opening.
These exclusions are unique to PatentBrief — derived from the actual claim language, not patent-office boilerplate.
What made this novel
It treats the wing support structure itself as a spring, using the energy stored during the packing process to perform the work of opening the canopy, rather than relying on external power sources or airflow.
Schematic visualization of the patent's claim structure. Hand-drawn diagrams in progress for each landmark patent.
Where you've seen this
Real-world examples
High-altitude balloon payload recovery systems
Near-space research vehicle descent systems
Why it matters
The bigger picture
Operating at the edge of space is difficult because air density is so low that traditional parachutes often fail to inflate. This technology is critical for companies like World View Enterprises that aim to return payloads from high-altitude balloons safely to Earth without needing complex or heavy active-inflation hardware.
Filed
August 19, 2020
Granted
March 21, 2023
Market context
Who's building on this
Companies in this space
World View Enterprises remains the primary developer of this specific rigidized parafoil technology. Other aerospace firms focused on stratospheric flight and payload recovery are also exploring similar passive-deployment methods to reduce system weight.
Market impact
This patent provides a reliable, low-weight method for recovering equipment from the stratosphere, which is essential for the growing market of near-space scientific research and commercial imaging. It helps lower the barrier to entry for high-altitude missions by simplifying the recovery phase of flight.
Claim 1 — Plain English
What this patent covers
This patent describes a mechanical assist system for opening parafoils at extremely high altitudes where the air is too thin for traditional ram-air inflation to work reliably. It uses two elongated wing tip supports that are hinged to a base structure. When the parafoil is packed into a bag, these supports are bent, storing potential energy like a spring. Once the restraint is released, the supports snap back to their original shape, physically pushing the canopy open so it can catch the sparse air and begin flight.
The clever bit
It treats the wing support structure itself as a spring, using the energy stored during the packing process to perform the work of opening the canopy, rather than relying on external power sources or airflow.
What it does not cover
- Does not cover parafoils that rely solely on ram-air pressure for inflation without mechanical assistance.
- Does not cover non-hinged or non-flexible structural support systems.
- Does not cover deployment systems that use pyrotechnic charges or explosive bolts to force canopy opening.
Patent timeline
Application submitted to the patent office
Application published, typically 18 months after filing
Patent officially issued
PatentBrief Score
Impact Score
Moderate
Citation count
14/40
Early citations
Claim breadth
13/20
Broad claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more →
Recency
20/20
Granted within 5 years
Assignee scale
0/20
Independent or smaller assigneeassigneeThe entity that owns the patent — usually the inventor's employer or a company.Read more →
PatentBrief Impact Score — based on citation count, claim breadth, recency, and assignee scale. Not a legal assessment.
Heuristic Value Estimate
What this patent might be worth
$53K – $168K
Midpoint $105K · 14.2 yr remaining · industry ×0.9
Heuristic only — blends forward/backward citation counts, claim scope, time remaining, litigation history, and CPC-derived industry baseline. Real valuations need a professional appraisal.
The original legal language
Original claims
19 claims as filed with the patent office.
Concepts involved
Citations
Patent lineage
Cite this patent
Leidich, J., MacCallum, T. K., & Bowen, T. (2023). How High-Altitude Parafoils Use Spring-Loaded Rods to Open Automatically (U.S. Patent No. 11,608,181). U.S. Patent and Trademark Office. https://patentbrief.org/patent/us/11608181/starship-orbital-launch-mount
Auto-generated from the patent record. Double-check author order and the issue date against the official USPTO document before submitting.
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Common Questions
Frequently Asked Questions
What does How High-Altitude Parafoils Use Spring-Loaded Rods to Open Automatically cover?
A system for high-altitude balloons that uses flexible, spring-loaded rods to force a parachute-like wing to snap open in the thin air of the upper atmosphere.
Who owns patent US 11608181?
World View Enterprises Inc owns this patent, granted in 2023.
When does this patent expire?
This patent is expected to expire on March 21, 2043, when the invention enters the public domain.
What is patent US 11608181 cited by?
This patent has been cited by 4 later patents that build on its ideas.
What problem does this patent solve?
Operating at the edge of space is difficult because air density is so low that traditional parachutes often fail to inflate. This technology is critical for companies like World View Enterprises that aim to return payloads from high-altitude balloons safely to Earth without needing complex or heavy active-inflation hardware.
What does this patent NOT cover?
Does not cover parafoils that rely solely on ram-air pressure for inflation without mechanical assistance.
Patent monitoring