You can freely build on How the Snurfer Invented Modern Snowboarding
This patent expired in 1986. 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
Brunswick Corp
Patent granted
1968
Expired
1986
Forward citations
42
What this patent covers
The invention describes a single, wide board designed for sliding down snow-covered slopes while the rider stands upright. It features a flexible steering rope attached to the front of the board, which the rider holds to maintain balance and guide the direction of travel. By shifting their weight and pulling on the rope, the rider can carve turns on the snow surface. This design eliminated the need for individual skis and bindings, focusing on a surf-like experience on snow.
What is now free to use
All 0 claims of US 3378274 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 boards with mechanical metal edges for high-speed ice carving.
Does not cover modern high-performance bindings that lock boots to the board.
Does not cover motorized snow vehicles or sleds.
Does not cover boards with complex suspension or dampening systems.
Who is building on this today
Major snowboarding brands like Burton Snowboards and K2 Sports evolved from the concept of the single-board ride. While the original Snurfer is a relic, the fundamental geometry of a single-board sliding platform remains the basis for the entire snowboarding equipment market.
Products built on expired version of this technology
The original Brunswick Snurfer
Early backyard snow-sliding boards
Modern recreational plastic snow-sliders
How to cite this patent in your documentation
Brunswick Corp. US Patent 3378274. Surf-type snow ski. Granted 1968, expired 1986. 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.