초록 ▼

A fastener driving device including a sequential activating arrangement in which an enabling member has one end pivotally connected to a trigger member, an opposite end operatively associated with an upper end of an upper structure of a work contact assembly and a central portion disposed below a lo

A fastener driving device including a sequential activating arrangement in which an enabling member has one end pivotally connected to a trigger member, an opposite end operatively associated with an upper end of an upper structure of a work contact assembly and a central portion disposed below a lower end of an actuating member. When the enabling member and trigger member are in the inoperative limiting positions, thereof movement of the upper structure from the inoperative position thereof into the operative position thereof will move the opposite end of said enabling member through a first arcuate path into a first position. When in the first position, the enabling member is moved into a second position in response to the manual movement of the trigger member into the operative limiting position thereof during which the actuating member is moved into the operative position thereof. The enabling member is retained in the second position thereof so long as the trigger member and upper structure are retained in the operative limiting positions thereof. When in the second position, the enabling member is moved through a second arcuate path into a third position in response to the movement of the upper structure into the inoperative position therewith either by virtue of the normal rebound of the device at firing or by a manual movement of the device away from the workpiece.

대표청구항 ▼

of either by virtue of the normal rebound of the device at firing or by a manual movement of said device away from the workpiece; the relationship between said actuating member and said enabling member being such that the movement of said enabling member between the second and third positions thereo

of either by virtue of the normal rebound of the device at firing or by a manual movement of said device away from the workpiece; the relationship between said actuating member and said enabling member being such that the movement of said enabling member between the second and third positions thereof is operable to allow said actuating member to move into the normally biased inoperative position thereof; the opposite end of said enabling member being movable through a second arcuate path during the movement of said enabling member from the second position thereof into the third position thereof so as to be out of the rectilinear path of said upper structure if the upper structure is moved back into the operative position thereof while said trigger member is retained in the operative limiting position thereof; the opposite end of said enabling member when said enabling member is in said third position being biased to move through a third arcuate path by the release of said trigger member from the manual movement thereof into the operative limiting position thereof; the third arcuate path of movement of the opposite end of said enabling member being configured to move the opposite end of said enabling member (1) into a position overlying the upper end of said upper structure when said upper structure is disposed in the inoperative position thereof and (2) into abutting engagement with said upper structure when the upper structure is in the operative position thereof.