Compound Blade Movement Patents (Class 30/181)
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Patent number: 7331109Abstract: An electric cutting device includes a housing, a motor, an activation button, a first assembly, a second assembly, two connecting rods, two connecting rods and a cutting assembly. The activation button may be used to activate the motor. The motor is connected with a speed reduction gear set, and a transmission gear is connected with the output shaft of the speed reduction gear set. The transmission gear is engaged with a driving gear. A threaded rod is fixedly connected with the driving gear. The two supporting rods are pivotally connected with the first assembly. The rear end of either connecting rod is connected with the front end of the corresponding supporting rod. In use, the motor may cause the threaded rod to rotate and then activate the cutting operation of the cutting assembly.Type: GrantFiled: May 12, 2006Date of Patent: February 19, 2008Inventor: Shu-Woan Tu
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Patent number: 7191525Abstract: A two-stage attachment includes two stages of levers arranged to apply a cutting, shearing, squeezing and/or piercing force. The first stage includes a cam lever that has a segmented arcuate pushing surface. The second stage includes a blades support that has an arcuate yielding surface. The pushing surface contacts the yielding surface such that force applied to the cam lever is transmitted to the blade support through the contact between the surfaces.Type: GrantFiled: October 8, 2004Date of Patent: March 20, 2007Inventor: Aleksandr M. Brailovskiy
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Patent number: 6473972Abstract: A cutting apparatus that includes a handle, a first arm and a second arm. A hinge pin pivotally supporting the first and second arms about a pivot point adjacent facing ends of the arms. A cutter blade is supported from at least one of the first and second arms. A pivot mechanism incouples a handle at the outer ends of the arms and includes a spring for biasing the arms to a position wherein the cutter blade is closed. The pivot mechanism interacts with the arms to bias the arms to a position wherein the cutter blade is closed while enabling the pivoting of the arms to open the cutter blade to receive a wire or the like for cutting.Type: GrantFiled: May 3, 2000Date of Patent: November 5, 2002Inventor: Phillip Guerin
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Publication number: 20020069537Abstract: Cutting pliers for surgical purposes are used to cut through wires (40) or the like. The cutting pliers have a first two-armed hand lever (1), whose shorter, front lever arm (3) is provided with a cutting edge on its front end section. A short lever arm (11) of a second hand lever (10) is connected in terms of transmission to a two-armed cutting lever (20) having the second cutting edge via a lever transmission. To reduce the number of joints needed and to obtain higher progressions of the cutting forces on the cutting lever during the cutting operation, the short lever arm (11) of the second hand lever (10) is provided at a radially spaced location from the joint of pliers (Z) with a curved path (K1, K2), via which this short lever arm (11) acts on the cutting lever (20). This lever arm (25) is provided for this purpose with a transmission element (31, 31′) sliding on the curved path (Kl, K2).Type: ApplicationFiled: October 9, 2001Publication date: June 13, 2002Inventor: Peter Wenzler
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Patent number: 4918815Abstract: A multi-link cutting tool used to cut wire, pipe, cable, tube, chain and the like. The cutting tool utilizes a multi-link connecting linkage between the cutter head and the handles to increase the leverage obtained at the cutting edge. As a result of the connecting linkage, a lower force is required at the handles since they operate through a greater distance. With this multi-link connecting mechanism, a smaller and more powerful cutting tool can be made.Type: GrantFiled: January 9, 1989Date of Patent: April 24, 1990Inventor: Karel B. F. Juros
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Patent number: 4525929Abstract: An improved cutting device including: first and second handles and a movable jaw having forward and rearward portions; a stationary jaw fixed to the first handle, the second handle including first pivot means for connecting the second handle to the stationary jaw and second pivot means for connecting the second handle to the movable jaw for providing slicing action between the jaws; and means, spaced from the first and second pivot means, for constraining motion of the rearward portion of the movable jaw and amplifying the leverage applied to the jaws by the handles through the first and second pivot means.Type: GrantFiled: September 27, 1982Date of Patent: July 2, 1985Inventors: H. Joseph Brophy, Sr., H. Joseph Brophy, Jr.
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Patent number: 4345377Abstract: A dehorning tool has a tabular body with a lever arm pivotally mounted on the upper half and connected to an end of a actuating arm inside the body. The other end of the actuating arm is connected to the ends of two cutting blades. There are camming means inside of the blades to cam them open when the blades are extended and there are camming means on the outside of the blades which cam the blades together when the actuating lever is moved to retract the blades.Type: GrantFiled: November 7, 1980Date of Patent: August 24, 1982Inventor: Francis W. Hewes, Jr.
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Patent number: 4034473Abstract: A suture cutter for cutting a suture in a slicing action including a first arm having a free end insertable under a suture and an elongated portion extending at an obtuse angle to the free end, and second arm having a free end and an elongated portion manually movable toward the elongated portion of the first arm, the elongated portions of both arms forming a handle for grasping the suture cutter. A straight edge cutting blade is attached to the free end of the second arm so that the cutting edge of the blade is at an angle to the elongated portion of the second arm ensuring a slicing cutting action on the suture when the suture cutter is operated without a resilient flexing of the second arm.Type: GrantFiled: December 23, 1975Date of Patent: July 12, 1977Assignee: International Paper CompanyInventor: Edwin A. May