1983 – Bridgestone “Rubbertuator” – Takeo Takagi and Yuji Sakaguchi (Japanese)

CAPTION: ROBOTS ON PARADE Keisuke Inada of Bridgestone Corp.of Tokyo adjusts the Soft Arm robot, a multijoint robot that resembles a human arm in its movements, at Cobo Hall. The Society of Manufacturing Engineers expects 25,000 people to attend its AUTOFACT '90, an exposition demonstrating computer-integrated manufacturing. Photo is dated 11/13/90. Pneumatic actuator for manipulator …

1967 – B.F. Goodrich “Rubber Muscle” – John S. England (American)

A Slightly different tack was taken by B. F. Goodrich in a "rubber muscle" project. If a straight piece of rubber hose with specially wound reinforcing cord is pressurized with a liquid or gas it will bend to form an arc; if more pressure is applied, the curvature increases until the hose becomes a ring. …

1986 – ROMAC Pneumatic Actuator – Guy Immega and Mirko Kukolj (American)

ROMAC, THE PNEUMATIC MUSCLE Actuator pulls 10,000 pounds using 60 psi A pneumatic actuator based on the principle of the human biceps has come to our attention in the form of a patent disclosure. The ROMAC, under development by MacDonald Detwiller & Associates of Richmond, British Columbia, Canada, works on low-pressure (shop) air and can …

1984 – Bellows Robotic Arm/Trunk – James Wilson (American)

  Reference:  Science News – March 26, 1988 The Muscular Machinery of Tentacles, Trunks and Tongues Scientists discover a new way for muscles to work By STEFI WEISBURD An arm without bones could not bend. A person who tried to bend such an arm would instead end up with a short, fat bulge of biceps. …