133401 ⎘
Accessories for sliding or lifting wings, e.g. pulleys, safety catches; Counterbalance devices with springs with coiled ribbon springs, e.g. constant force springs specially adapted for overhead wings
Negator spring tool and method
#2Main door for the control of the access opening to a compartment, particularly a garage compartment
#3Spring-Assisted Mechanism for Raising and Lowering a Load
#4Negator spring tool for paratroop door