Guard and control assembly for a compound miter saw

Details Guard and control assembly for a compound miter saw Guard and control assembly for a compound miter saw

2003-04-16

2004-07-06

Shoap, Allan N. (Department: 3724)

Cutting

Interrelated tool actuating means and means to actuate work...

Work clamp

C083S478000, C083S544000, C192S130000

Reexamination Certificate

active

06758122

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a guard and control assembly, and more particularly to a guard and control assembly for a compound miter saw and that will completely cover a saw blade in the miter saw.
2. Description of Related Art
Compound miter saws are used to cut a piece of metal, wood or other material at a precise angle. Most compound miter saws today incorporate a circular saw to cut pieces. If no blade guard is mounted around the circular saw in the miter saw, the circular saw is very hazardous.
With reference to
FIG. 8
, a compound miter saw (not numbered) comprises a base (
91
), a miter device (
92
), a turntable (not numbered) and a cutting assembly (
93
). The turntable with the miter device (
92
) is rotatably mounted in the base (
91
) and has a top surface (not shown), and the cutting assembly (
93
) is pivotally mounted on the turntable. The cutting assembly (
93
) has a motor assembly (not shown), a housing (
94
), a saw blade (
95
), a blade guard (not numbered), a blade mounting disk (
97
), an inside blade guard linkage (not shown) and an outside blade guard linkage (
98
). The housing (
94
) is pivotally mounted on the turntable and has a side (not numbered). The motor assembly is mounted in the housing (
94
). The saw blade (
95
) is connected to the motor assembly with the blade mounting disk (
97
) and is rotated by the motor assembly at the side of the housing (
94
). A portion of the saw blade (
95
) extends out of the housing (
94
) for cutting. The inside blade guard linkage and the outside blade guard linkage (
98
) are respectively mounted in the housing (
94
) and each has an outside end (not numbered) attached to the blade guard. The blade guard has an inside pivotal guard (
961
) and an outside pivotal guard (
962
). The inside pivotal guard (
961
) is attached to the inside blade guard linkage. The outside pivotal guard (
962
) is attached to the outside blade guard linkage (
98
). The outside and the inside pivotal guards (
961
,
962
) are respectively pivotally connected to the outside ends of the inside and the outside blade guard linkages (
98
). The inside pivotal guard (
961
) and the outside pivotal guard (
962
) cover most of the exposed portion of the saw blade (
95
).
When the cutting assembly (
93
) is pivoted toward the base (
91
), the inside blade guard linkage and the outside blade guard linkage (
98
) will respectively pivot the inside and the outside pivotal guards (
961
,
962
) upward to expose the saw blade (
95
) so a piece (not numbered) can be cut.
However, the conventional guard assembly for a compound miter saw does not efficiently cover the saw blade (
95
). When a person uses the compound miter saw to cut a piece, the person is always in front of the compound miter saw. A portion of the saw blade (
95
) facing forward is exposed. The exposed portion of the saw blade (
95
) poses a significant personal hazard to the person using the compound miter saw. The person using the compound miter saw may be injured easily by the saw blade (
95
).
Besides, the two pivotal guards (
961
,
962
) are pivoted a specific angular displacement by the inside blade guard linkage and the outside blade guard linkage (
98
) to expose only a portion of the saw blade (
95
), respectively. Consequently, the angular displacement of the two pivotal guards (
961
,
962
) are limited, which limits the height of a piece that can be cut. The conventional guard assembly narrows the applications of the compound miter saw.
The present invention provides a guard and control assembly for a compound miter saw to mitigate or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
The main objective of the invention is to provide a guard and control assembly for a compound miter saw to efficiently cover a saw blade of a miter saw.
Another objective of the invention is to provide a safe compound miter saw to protect a person using the compound miter saw from hazards associated with the compound miter saw.


REFERENCES:
patent: 5370025 (1994-12-01), Itzov
patent: 5531147 (1996-07-01), Serban
patent: 5724875 (1998-03-01), Meredith et al.
patent: 6182548 (2001-02-01), Meredith et al.
patent: 6279442 (2001-08-01), Chang
patent: 6415699 (2002-07-01), Bettacchini et al.
patent: 2002/0066346 (2002-06-01), Gass et al.
patent: 2002/0134211 (2002-09-01), Bettacchini et al.
patent: 2002/0170404 (2002-11-01), Peot et al.
patent: 2003/0037655 (2003-02-01), Chang

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