72423932
May 10, 1972
Oct 29, 1974
STAR SPRINGS (ALSO KNOWN AS STAR DISCS)-NAMELY, SHALLOW-TAPERED RINGS OF SPRING STEEL ALTERNATELY SLOTTED FROM INSIDE AND OUTSIDE AROUND THEIR CIRCUMFERENCE; DISC ASSEMBLIES INCORPORATING SUCH STAR SPRINGS
FirearmsFREEWHEELS; FREEWHEEL WEDGE PIECES; CLUTCHES; TORQUE LIMITERS, COUPLINGS; CONCENTRIC CLAMPING ELEMENTS-NAMELY, CHUCKS AND MANDRELS; STEP-UP, STEP-DOWN AND SPEED-CHANGING GEARING AND PARTS THEREOF
Yarns and Threads