Trigger locking means for hand-portable power-operated device

Claim 1

IN A HAND-PORTABLE POWER-OPERATED DEVICE, THE COMBINATION OF: (A) A HOUSING; (B) A TRIGGER SLIDABLE IN SAID HOUSING; (C) SAID TRIGGER NORMALLY HAVING AN "OFF" POSITION IN WHICH THE DEVICE IS DE-ENERGIZED AND FURTHER HAVING AN ALTERNATE "ON" POSITION, RETRACTED WITH RESPECT TO SAID HOUSING, AND IN WHICH THE DEVICE IS ENERGIZED; (D) A SLOTTED APERTURE FORMED IN SAID TRIGGER; (E) A STOP FORMED INTERMEDIATE THE EXTREMITIES OF SAID APERTURE, AND SAID APERTURE HAVING FORWARD AND REARWARD PORTIONS ON RESPECTIVE SIDES OF SAID STOP; (F) A LOCKING MEMBER SLIDABLE IN SAID HOUSING AND PASSING TRANSVERSELY THROUGH SAID APERTURE IN SAID TRIGGER, SAID LOCKING MEMBER NORMALLY HAVING AN "UNLOCKED" POSITION AND ALTERNATELY HAVING A "LOCKED" POSITION WITH RESPECT TO SAID TRIGGER; AND SAID LOCKING MEMBER REQUIRING A DELIBERATE MANUAL EFFORT FOR MOVEMENT FROM ITS "UNLOCKED" POSITION TO ITS "LOCKED" POSITION, AND VICE-VERSA; (G) SAID LOCKING MEMBER HAVING AN INTERMEDIATE PORTION OF REDUCED CROSS-SECTION NORMALLY RECEIVED WITHIN SAID REARWARD PORTION OF SAID SLOTTED APERTURE IN SAID TRIGGER IN THE "UNLOCKED" POSITION OF SAID LOCKING MEMBER, WHEREBY SAID STOP IN SAID APERTURE MOVES FREELY PAST SAID INTERMEDIATE PORTION WHEN SAID TRIGGER IS MOVED INTO ITS "ON" POSITION, AND WHEREBY SAID INTERMEDIATE PORTION OF SAID LOCKING PIN IS RECEIVED WITHIN SAID FORWARD PORTION OF SAID APERTURE IN THE "ON" POSITION OF SAID TRIGGER; AND (H) SAID LOCKING MEMBER FURTHER HAVING A SECOND PORTION ADJACENT SAID INTERMEDIATE PORTION, SAID SECOND PORTION HAVING AN INCREASED CROSS-SECTION OVER SAID INTERMEDIATE PORTION AND BEING ADAPTED TO ABUT AGAINST A RESPECTIVE END OF SAID STOP, WHEN SAID PIN IS MOVED INTO ITS "LOCKED" POSITION, TO THEREAFTER PREVENT FURTHER MOVEMENT OF SAID TRIGGER, AND TO THEREBY LOCK SAID TRIGGER IN EITHER OF ITS POSITIONS.