Safety device for a stapling gun

Elongated-member-driving apparatus – With means to move or guide member into driving position – Including supply magazine for constantly urged members

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Details

227 8, B25C 104

Patent

active

057093334

ABSTRACT:
A safety device for a stapling gun including a first switch button having an end pivotally mounted on a housing of a stapling gun, another end of the first switch button having a recess formed with a vertical rod on which is fitted a first spring, an inner side of the housing being provided with an inverted U-shaped member which is located right above the recess, the first spring being arranged between the recess of the first switch button and the inverted U-shaped member, a lower side of the first switch button having a groove, an intermediate portion of the first switch button being formed with a vertical passage which is in communication with the groove, a second switch button being pivotally connected with an end of the first switch button, a second spring being installed to push the second switch button to go outwardly from the groove, the second switch button being contoured to fit into the groove and having a protuberance adapted to fit into the vertical passage, a shaft fitted fitted within the vertical passage and enclosed with a second spring, an upper end of the shaft extending upwardly out of the vertical passage and engaged with a C-shaped retainer thereby preventing the shaft from disengaging from the vertical passage, whereby the stapling gun is only operated when the first switch button is depressed in the housing and the second switch button fitted in the first switch button.

REFERENCES:
patent: 4432483 (1984-02-01), Kuck
patent: 4629106 (1986-12-01), Howard et al.
patent: 5014898 (1991-05-01), Heidrich
patent: 5551621 (1996-09-01), Vallee
patent: 5605268 (1997-02-01), Hayashi et al.

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