Kinner Airplane & Motor Co

Formed in 1919. Known chiefly for its air-cooled radial engines. Aircraft designed by the company round its own engines included Courier two-seat parasol monoplane of late 1920s. In 1930s was producing Sportster strut-braced low-wing monoplane with open side-by-side seats. Sportwing was refined version, Playboy was wire-braced and enclosed and Envoy was scaled-up Playboy seating four. Three Envoys acquired by U.S. Navy as XRK-1 were not experimental, but staff transports. During 1937 company still offered six types of engine and was working on twin-engined Invader, but in 1938 was in receiver's hands, though continuing operations under control of a trustee.