Elongated-member-driving apparatus – With means to support member and/or work relative to driver – Impact-type driver
Reexamination Certificate
1999-09-02
2001-11-20
Smith, Scott A. (Department: 3721)
Elongated-member-driving apparatus
With means to support member and/or work relative to driver
Impact-type driver
C227S148000
Reexamination Certificate
active
06318620
ABSTRACT:
DESCRIPTION
1. Technical Field
The present invention generally relates to nailers for driving fasteners into workpieces, and in particular, to a nailer having a plunger wherein a user can incrementally drive a fastener into a workpiece by manually striking the plunger multiple times.
2. Background Art
Fasteners stamped or blanked from cold rolled steel sheets and formed into sticks or strips for continuous or magazine feeding of a plunger-type nailing machine are well known in the art. Examples of such fasteners are exemplified in U.S. Pat. Nos. 2,649,831; 2,868,057, and 2,428,259, the disclosures of which are incorporated in their entirety by reference herein. Such fasteners, more commonly termed cleats or nails, can be used to install tongue and groove flooring and other types of workpieces.
Plunger-type nailing machines for driving fasteners into workpieces can be divided into two general categories: manually operated and power assisted. Typically, a manually operated nailing machine includes a plunger extending from the housing of the nailing machine. The plunger includes a head suitable for striking with a heavy mallet. A recoil spring is used to resiliently bias the plunger head at a distance away from the nailer housing. In use, a fastener is driven into a workpiece by striking the plunger head with a mallet. The application of such force results in compression of the spring as the fastener is being driven into the workpiece. The spring then recoils the plunger head back to its initial position away from the housing of the nailer.
In using the above described manual nailing machines, problems occur if the user does not strike the plunger with adequate force to fully drive the fastener into the workpiece. For instance, to drive a partially driven fastener the rest of the way into the workpiece, the user must again apply enough force to the plunger head to recompress the recoil spring. Accordingly, recompressing the recoil spring several times over the course of job can cause a user to become prematurely exhausted.
The prior nailing machines also continue to load another fastener for driving into a workpiece even if a preceding fastener was not completed driven into the workpiece. Consequently, these nailing machines cannot be used to complete the process of driving partially driven fasteners into the workpiece. Instead, the user must take special time-consuming steps, such as using a punch or the like, to finish driving partially driven fasteners into the workpiece.
Hence, prior to the present invention, a need existed for a manual nailer that allows a user to incrementally drive a fastener into a workpiece without wasting time or energy.
SUMMARY OF THE INVENTION
According to the present invention, a manual nailer has been developed wherein a user can incrementally drive a fastener into a workpiece by striking a plunger multiple times. As a result, the user does not have to strike the plunger with enough force to drive the fastener into the workpiece with a single blow.
Generally, the nailer machine of the present invention includes a housing having a chamber adapted to receive at least one fastener and a driving blade. Operably connected to the housing and the driving blade is a plunger having a plurality of teeth. Received between at least two of the teeth is the pawl of a ratchetting mechanism. Further, a recoil spring is operably connected to the housing and the plunger.
Other advantages and features of the present invention will be apparent from the following description of a specific embodiment illustrated in the accompanying drawings.
REFERENCES:
patent: Re. 29354 (1977-08-01), Malkin
patent: 406075 (1889-07-01), White
patent: 1158430 (1915-11-01), Bell
patent: 2078012 (1937-04-01), Newell
patent: 2097865 (1937-11-01), Stockel
patent: 2229868 (1941-01-01), Newell, Sr.
patent: 2458259 (1949-09-01), Anstett
patent: 2649831 (1953-08-01), Anstett
patent: 2768376 (1956-10-01), Critchley
patent: 2822544 (1958-02-01), Anstett
patent: 2866199 (1958-12-01), Freeman et al.
patent: 2868057 (1959-01-01), Anstett
patent: 2994878 (1961-08-01), Abrahamsen
patent: 3007171 (1961-11-01), Critchley
patent: 3022509 (1962-02-01), De Man
patent: 3042925 (1962-07-01), Frostad et al.
patent: 3281046 (1966-10-01), Boulay
patent: 3360176 (1967-12-01), Gehl et al.
patent: 4204625 (1980-05-01), Glenn
patent: 4907730 (1990-03-01), Dion
Anstett David A.
Moscato Richard S.
Powernail Co.
Smith Scott A.
Wallenstein & Wagner Ltd.
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