Metal-Working Hand Tools TRIZ Cases

A nested rod, outer tube, and elastic-ring sleeve preserve contact area, improve strength, and reduce noise during wrench extension.

A pivoting lever, ring, and cylindrical guide gradually place piston boots on caliper pistons with less damage and effort.

A cover with detachable size collars adapts one torque tool to different oil filters, reducing tool count and storage needs.

Multiple jaw-width tools use depth stops and coupling points to shift balance toward the gripping surface.

A leaf spring opens the legs while a distal thumb wheel enables compact, one-handed width adjustment for precise small-component handling.

A sliding magazine pivots out of the screwdriver handle for easy bit retrieval, then springs back to secure, dust-tight storage.

A segmented plate, threaded insert, and pusher screw apply controlled force to separate seized hubs from suspension arms.

A guide sleeve and threaded drive pin keep clevis pin removal aligned in inaccessible, corroded truck brake slack adjusters.

Threaded actuation and support blocks transfer force through the stub axle, removing hubs while limiting U-joint damage and axle movement.

Angled recesses, a fulcrum, and pole attachment let one user open frame panels and replace posters without a ladder.

A universal threaded mount, palm rest, and hook-and-loop strap improve tool control while reducing hand fatigue.