Rock climber, alpinist, equipment innovator, and entrepreneur.
Early developer of spring-loaded camming devices for rock climbing protection. Inventor of the tricam nut/cam hybrid for rock climbing protection (1973) and internal frame backpack (1967). Co-founder of Lowe Alpine equipment manufacturers (1967).
[1] https://www.needlesports.com/Information/Features/Nuts-Museum/Clockwork-Friends