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US 4,392,263 AGranted
Portable rescue tool
OwnerMichael J. Amorosoinventor
Life of this patent
Estimating the term…
Abstract
This rescue tool includes a body, providing a cylinder and a piston extending outwardly of the cylinder, and a pair of jaw members pivotally connected to the body by link members and the piston. The jaw members include cooperating outer prying portions, inner cutting portions and intermediate shearing portions. The cutting and shearing portions include arcuate edges defining overlapping points and the prying portions are thickened to facilitate wedge action. The tool can be powered by a bi-directional motor, reservoir and battery system or can be powered directly from a wrecker motor vehicle system.
Claims22
A tool for rescue work comprising:
- (a) a body,
- (b) a first jaw member having an outer prying and clamping portion and an inner cutting portion,
- (c) a second jaw member having an outer prying and clamping portion and an inner cutting portion, said second member being offset from said first member and at least partially overlapping said first member to provide the cutting action, and
- (d) means connecting said first and second jaw members to the body for opening and closing said jaw members, the cutting portion of the jaw members and the prying and clamping portion of the jaw members being operatively disposed on the same side of the connection means and said outer prying and clamping portions of the jaw members being interengageable in the closed position to facilitate the clamping and prying action and to facilitate use as a wedge.
1 more element
A tool for rescue work comprising:
- (a) a body,
- (b) a first jaw member having an outer prying and clamping portion and an inner cutting portion,
- (c) a second jaw member having an outer prying and clamping portion and an inner cutting portion, said second member being offset from said first member and at least partially overlapping said first member to provide the cutting action,
- (d) means connecting said first and second jaw members to the body for opening and closing said jaw members, the cutting portion of the jaw members and the prying and clamping portion of the jaw members being operatively disposed on the same side of the connection means,
- (e) each jaw member including a shearing portion disposed intermediate the prying and clamping portion and the cutting portion, and
- (f) each jaw member shearing portion and cutting portion including an arcuate edge, said arcuate edges intersecting to define overlappable points.
3 more elements
A tool for rescue work comprising:
- (a) a body,
- (b) a first jaw member having an outer prying and clamping portion and an inner cutting portion,
- (c) a second jaw member having an outer prying and clamping portion and an inner cutting portion, said second member being offset from said first member and at least partially overlapping said first member to provide the cutting action,
- (d) means connecting said first and second jaw members to the body for opening and closing said jaw members, the cutting portion of the jaw members and the prying and clamping portion of the jaw members being operatively disposed on the same side of the connection means,
- (e) the body including a fluid operated cylinder and an extensible piston mounted in the cylinder, and
- (f) the connecting means including pivot means connecting said first and second overlapping jaw members to the piston at the same pivot axis, and link means at each side of the pivot means connecting each of the jaw members to the body.
3 more elements
A tool for rescue work comprising:
- (a) a body,
- (b) a first jaw member having an outer prying and clamping portion and an inner cutting portion,
- (c) a second jaw member having an outer prying and clamping portion and an inner cutting portion, said second member being offset from said first member and at least partially overlapping said first member to provide the cutting action,
- (d) means connecting said first and second jaw members to the body for opening and closing said jaw members, the cutting portion of the jaw members and the prying and clamping portion of the jaw members being operatively disposed on the same side of the connection means,
- (e) each jaw member cutting portion being re-entrantly formed to provide enclosing cutting edges.
2 more elements
A tool for rescue work comprising:
- (a) a body,
- (b) a first jaw member having an outer prying and clamping portion and an inner cutting portion,
- (c) a second jaw member having an outer prying and clamping portion and an inner cutting portion, said second member being offset from said first member and at least partially overlapping said first member to provide the cutting action,
- (d) means connecting said first and second jaw members to the body for opening and closing said jaw members, the cutting portion of the jaw members and the prying and clamping portion of the jaw members being operatively disposed on the same side of the connection means,
- (e) the jaw member cutting portions in the jaw open condition initially diverging from each other and then converging toward each other as the distance from the connection means is increased.
2 more elements
A tool for rescue work comprising:
- (a) a body,
- (b) a first jaw member having an outer prying and clamping portion and an inner cutting portion,
- (c) a second jaw member having an outer prying and clamping portion and an inner cutting portion, said second member being offset from said first member and at least partially overlapping said first member to provide the cutting action,
- (d) means connecting said first and second jaw members to the body for opening and closing said jaw members, the cutting portion of the jaw members and the prying and clamping portion of the jaw members being operatively disposed on the same side of the connection means,
- (e) each jaw member prying and clamping portion being asymmetrically formed and being substantially thicker than the corresponding cutting portion.
2 more elements
A tool for rescue work comprising:
- (a) a body,
- (b) a first jaw member having an outer prying and clamping portion and an inner cutting portion,
- (c) a second jaw member having an outer prying and clamping portion and an inner cutting portion, said second member being offset from said first member and at least partially overlapping said first member to provide the cutting action,
- (d) means connecting said first and second jaw members to the body for opening and closing said jaw members, the cutting portion of the jaw members and the prying and clamping portion of the jaw members being operatively disposed on the same side of the connection means,
- (e) the body including adjacent and side faces and a handle bar extending at least partially around the body to provide handle portions on at least two adjacent faces of the body and a single cooperating guide handle at one end of the body.
2 more elements
A rescue system comprising:
- (a) a rescue tool including:
- 1. a body including a fluid-operated cylinder, an extensible arm means being mounted in the cylinder,
- 2. a first jaw member having an outer prying and clamping portion and an inner cutting portion,
- 3. a second jaw member having an outer prying and clamping portion and an inner cutting portion, said second member being off-set from said first member and at least partially overlapping said first member to perform the cutting action and said outer prying and clamping portions of the jaw members being interengageable in the closed position to facilitate the clamping and prying action and to facilitate use as a wedge, and
- 4. means operatively connecting said first and second jaw members to the body and the arm means for opening and closing said jaw members, the cutting portion of the jaw members being operatively disposed on the same side of the connection means, and
- (b) a power supply including:
- 1. a fluid reservoir,
- 2. motor and pump means, and
- 3. means controlling the fluid supply from the fluid reservoir to the rescue tool cylinder to control movement of the jaw members between open and closed conditions.
6 more elements
A rescue system comprising:
- (a) a rescue tool including:
- 1. a body including a fluid-operated cylinder, an extensible arm means being mounted in the cylinder,
- 2. a first jaw member having an outer prying and clamping portion and an inner cutting portion,
- 3. a second jaw member having an outer prying and clamping portion and an inner cutting portion, said second member being off-set from said first member and at least partially overlapping said first member to perform the cutting action, and
- 4. means operatively connecting said first and second jaw members to the body and the arm means for opening and closing said jaw members, the cutting portion of the jaw members and the prying and clamping portion of the jaw members being operatively disposed on the same side of the connection means, and
- (b) a power supply including:
- 1. a fluid reservoir,
- 2. motor and pump means, and
- 3. means controlling the fluid supply from the fluid reservoir to the rescue tool cylinder to control movement of the jaw members between open and closed conditions,
- (c) the motor and pump means including an electrical, bi-directional motor, and
- (d) the fluid supply control means including a pair of starter solenoids mounted to the motor and pump means, and switch means for the starter solenoids mounted to the rescue tool.
8 more elements
Dependencies are inferred from the claim text.