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US 6,237,449 B1Granted
Quickly-adjustable gripping and cutting tools
AssigneeTool Research Corporation
InventorHenry Orlosky
Life of this patent
Estimating the term…
Abstract
A hand tool that is self-adjusting by alternately squeezing and relaxing the hand grip on the two handles, and that has substantially parallel jaws during closing adjustment. In one embodiment, the jaws have opposing gripping surfaces. In another embodiment, the jaws have opposing cutting blades. All of the operations, except the resetting of the adjustable jaw to a wide open position, can be accomplished with just one hand holding the tool.
Claims20
A cutting apparatus, comprising:
- (a) a body, said body including a first handle, said body including a first jaw, said first jaw including a first cutting surface;
- (b) a second handle, said second handle pivotally coupled to said body;
- (c) a second jaw, said second jaw slidably and pivotally coupled to said body, said second jaw including a second cutting surface, said second jaw including a plurality of first gear teeth, said first gear teeth positioned along an axis that is canted toward said second cutting surface;
- (d) a plurality of second gear teeth carried by said second handle, whereupon engagement of said second gear teeth of said second handle with said first gear teeth of said second jaw provides for adjusting said second jaw toward said first jaw;
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- (e) jaw opening means for adjusting said second jaw away from said first jaw.
3 more elements
An apparatus as recited in claim 6, wherein said first cutting disk is configured to rotate about a first axle and said second cutting disk is configured to rotate about a second axle.
A hand tool, comprising:
- (a) a body, said body including an integrally formed fixed handle and an integrally formed fixed jaw, said fixed jaw including a first cutting surface;
- (b) an adjustable jaw slidably and pivotally coupled to said body, said adjustable jaw including a second cutting surface, said adjustable jaw including a plurality of first gear teeth, said first gear teeth positioned along a longitudinal axis that is canted toward said second cutting surface;
- (c) a jaw adjusting handle pivotally coupled to said body;
- (d) a plurality of second gear teeth disposed on said jaw adjusting handle, whereupon engagement of said second gear teeth of said jaw adjusting handle and said first gear teeth of said adjustable jaw provides for adjusting said adjustable jaw toward said fixed jaw;
- and
- (e) jaw opening means for adjusting said adjustable jaw away from said fixed jaw.
3 more elements
A hand tool, comprising:
- (a) a body, said body including an integrally formed fixed handle and an integrally formed fixed jaw, said fixed jaw including a first cutting surface, said first cutting surface having a blade;
- (b) a rail section formed on said body, said rail section being at substantially a 90-degree angle relative to said fixed jaw;
- (c) an elongated slot in said body generally in parallel alignment with said rail section;
- (d) an adjustable jaw, said adjustable jaw having a second cutting surface, said cutting surface having a blade;
- (e) a bifurcated section on said adjustable jaw having side walls and an inner wall, said bifurcated section straddling said rail section;
- (f) a fastener affixed to said side walls of said bifurcated section and inserted through said elongated slot, wherein said adjustable jaw is slidably and pivotally coupled to said body;
- (g) a plurality of first gear teeth formed on said adjustable jaw, each of said first gear teeth having a long flat side and a short flat side joining at one end to form an angled tooth with a radiused edge, said first gear teeth positioned along an axis that is canted toward said second cutting surface;
- (h) a jaw adjusting handle pivotally coupled to said body;
- (i) a plurality of second gear teeth formed on said jaw adjusting handle, each of said second gear teeth having a long flat side and a short flat side joining at one end to form an angled tooth with a radiused edge, said second gear teeth cooperating with said first gear teeth on said adjustable jaw to slide said adjustable jaw toward said fixed jaw as said jaw adjusting handle is pivoted back and forth away from and toward said fixed handle, wherein substantially parallel alignment between said fixed jaw and said adjustable jaw is maintained during operation of said jaw adjusting handle;
- (j) a spring having a lower and an upper end, said lower end coupled to said inner wall of said bifurcated section in said adjustable jaw, said spring being curved so that said upper end bears against said rail section and holds an upper portion of said second jaw away from said rail section and urges said first gear teeth on said second jaw toward second gear teeth on said jaw adjusting handle into engagement;
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- (k) at least one concave recess on said adjustable jaw that may be gripped to pull said bottom portion of said adjustable jaw away from said rail section on said body and separate said first gear teeth on said adjustable jaw from said second gear teeth on said jaw adjusting handle so that said adjustable jaw may be pulled away from said fixed jaw in one continuous motion.
9 more elements
Dependencies are inferred from the claim text.