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US 5,487,221 AGranted
Jig saw
AssigneeMakita Corporation
InventorsZenichi Oda, Toshiyuki Kani
Life of this patent
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AssigneeMakita Corporation
InventorsZenichi Oda, Toshiyuki Kani
Estimating the term…
A jig saw includes a housing and a drive shaft disposed within the housing and driven to perform a predetermined motion. A holder is mounted on the drive shaft and includes an operation member operable between a fixing position and a releasing position for fixing and releasing a saw blade, respectively. A cover is mounted on the housing and is movable between an open position and a closed position for uncovering and covering the holder, respectively. An interlocking mechanism is provided for interlocking between the operation member and the cover such that the operation member is moved from the fixing position to the releasing position when the cover is moved from the closed position to the open position.
A jig saw comprising:
The jig saw as defined in claim i wherein:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts ; Carrying or…:…
Of devices for mounting straight saw blades or other tools: for hand-held or hand-operated devices
For rectilinearly reciprocating tool: tool is single element reciprocable along elongate cutting edge [e.g., saw blade, etc.]
Planing
Term ended 9 Feb 2015 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention relates to a jig saw.
2. Description of the Prior Art
FIG. 1 is a side view, with a part broken away, of the essential parts of a jig saw according to an embodiment of the present invention;
FIG. 2 is a vertical sectional view of a holder of the jig saw;
FIG. 3 is a sectional view taken along line III--III in FIG. 2;
An embodiment of the present invention will now be explained with reference to the accompanying drawings.
Referring to FIG. 1, a front portion of a jig saw 1 according to this embodiment is shown with a part broken away. The jig saw I has a housing 2 which is constricted to form an upper grip portion 2a to be grasped by one hand of an operator. The housing 2 has a rear portion (not shown) which has a cylindrical configuration and is adapted to be grasped by the other hand of the operator. A motor (not shown) is accommodated within the rear portion of the housing 2.
A drive shaft 3 is disposed within a front end of the housing 2 at a position downwardly of the grip portion 2a. The drive shaft 3 is connected to the motor via an orbital motion mechanism (not shown), so that the drive shaft 3 is reciprocally moved both in a vertical direction and in forward and rearward directions by predetermined distances, respectively. Such an orbital motion mechanism is well known in the art, and therefore, its description will be omitted. A pair of support members 3a (only the lower one is shown in the drawing) support the drive shaft 3 so as to permit the orbital motion of the drive shaft 3.