Elongated-member-driving apparatus – With means to move or guide member into driving position – With means to assure correct orientation of member
Reexamination Certificate
1999-12-30
2001-05-08
Smith, Scott A. (Department: 3721)
Elongated-member-driving apparatus
With means to move or guide member into driving position
With means to assure correct orientation of member
C227S120000, C227S136000, C227S142000, C081S057370, C081S434000
Reexamination Certificate
active
06227429
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a stapler, and more particularly to a stapler having a guiding mechanism for guiding the belt that holds the fasteners or the nails to be driven into the work pieces.
2. Description of the Prior Art
Typical staplers comprise a driving member for driving the fasteners or the nails supported in line in a belt. The belt is moved into the stapler step by step for supplying the fasteners into the stapler. However, the stapler has no guiding mechanism for guiding the belt through the stapler such that the belt may not be stably retained in place and may move here and there.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional staplers.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a stapler having a guiding mechanism for guiding the belt and the fasteners into the stapler.
In accordance with one aspect of the invention, there is provided a stapler comprising a housing secured to a body and including a chamber formed therein, the body including a driving tool extended therefrom and rotatably received in the chamber of the housing, a barrel slidably received in the chamber of the housing for engaging with a work piece, a base including a first end secured to the barrel and including an orifice formed in the first end of the base and aligned with the driving tool for allowing the driving tool to be engaged through the orifice of the base, the base including a groove formed therein for slidably receiving fasteners to be engaged into the work piece, a latch engaged into the barrel and engaged with the first end of the base for securing the first end of the base to the barrel, the latch including a pair of protrusion extended therefrom and a slit defined between the protrusions of the latch for slidably receiving and guiding the fasteners, a casing including a space formed therein for slidably receiving the base and for slidably engaging the casing onto the base, the casing including a passageway formed therein for slidably receiving the fasteners, means for moving the fasteners into the barrel, and a biasing means received in the chamber of the housing and engaged with the barrel and the base for applying a biasing force against the barrel and the base when the barrel and the first end of the base are forced inward of the housing.
An adjusting device is further provided for adjustably securing the first end of the base to the barrel and includes a plurality pairs of notches formed in the barrel, and the latch is engaged into the barrel via the notches and engaged with the first end of the base for securing the first end of the base to the barrel. The first end of the base includes at least one recess formed therein, the latch includes at least one hook engaged into the recess of the base and engaged with the base for securing the latch to the base and to the barrel. The latch includes a passage formed therein for slidably receiving the fasteners, the stapler further includes a belt for supporting the fasteners, and the latch includes a frame to define the passage of the latch for slidably engaging with and guiding the belt.
A guiding device is further provided for guiding the barrel and the first end of the base to slide in the chamber of the housing and includes a block secured to the first end of the base, at least one groove formed in the housing, at least one slot formed in the barrel, and at least one fastener engaged through the groove of the housing and the slot of the barrel and engaged with the block for slidably securing the block and the barrel to the housing. One or more slides are slidably engaged through the groove of the housing and the slot of the barrel, the fastener is engaged through the slide and engaged with the block for slidably securing the block and the barrel to the housing.
The fasteners moving means includes a pusher pivotally secured to the casing at a pivot pole and having an extension for engaging with the fastener, and means for biasing the pusher to the casing and to engage with the fasteners. The casing includes a duct formed therein, the pivot pole is extended from the pusher and rotatably secured in the duct for pivotally securing the pusher to the casing.
A moving device is further provided for moving the casing away from the barrel when the barrel moves inward of the housing and includes at least one cam surface formed in the housing, the casing includes a rod engaged with the cam surface for moving the casing away from the barrel when the barrel moves inward of the housing. A securing device is further provided for securing the rod to the casing. A block is secured to the first end of the base and includes an arm having a groove for slidably receiving a coupler.
Further objectives and advantages of the present invention will become apparent from a careful reading of a detailed description provided hereinbelow, with appropriate reference to accompanying drawings.
REFERENCES:
patent: 3757407 (1973-09-01), Bomar
patent: 3891014 (1975-06-01), Gunn
patent: 3920169 (1975-11-01), DeCaro
patent: 4404877 (1983-09-01), Mizuno et al.
patent: 5101697 (1992-04-01), Fishback
patent: 5231900 (1993-08-01), Deri
patent: 5284074 (1994-02-01), Chen
patent: 5826468 (1998-10-01), Daubinger et al.
patent: 5975350 (1999-11-01), Han
patent: 6123244 (2000-09-01), Huang
Baxley Charles E.
Smith Scott A.
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