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| Number | Title | Issue Date |
| 7290343 | Reciprocating stroke bar bearing A motor-driven saw has a gearing housing (4), which has at least two housing parts (6, 8), a stroke bar (10), which in operation executes a stroke movement in the direction of a stroke axis (26), and a reciprocating movement generator ( | 11/06/2007 |
| 7275322 | Pivoting handle assembly for power tool There is disclosed a power tool comprising a housing (3), a motor provided in the housing and having a rotary output shaft, a reciprocating output shaft adapted to be caused by the motor to execute reciprocating motion to actuate a blade assembly, and a handl... | 10/02/2007 |
| 7204025 | Hand-operated tool with handle The invention relates to a hand-operated tool with handle (1) with a handle section (2) on the user side and with a foot section (3) arranged on the bottom side of the handle section (2) and with a detachable one-piece upper handle shell ... | 04/17/2007 |
| 7178244 | Powered utility knife A powered utility knife has a housing defining a handle surface and an internal cavity. A shuttle plate assembly disposed for movement relative to the internal cavity, with a first surface in sliding engagement with an interior wall of the cavity includes a motor mo... | 02/20/2007 |
| 6976313 | Battery-powered carving knife having a rechargeable battery pack A battery-powered carving knife is shown having a housing and a switch, which connects and disconnects a battery to a motor. A drive mechanism including a worm gear together with a cam member causes reciprocation of reciprocating blade mounts to reciprocate back and... | 12/20/2005 |
| 6643935 | Combined shears and loppers A cutting tool which has a first cutting blade which is mounted in a scissors arrangement with a second cutting blade. The first cutting blade has formed at one end thereof a first cutting element and at the opposite end thereof a second cutting element. ... | 11/11/2003 |
| 6564459 | Chain saw In a chain saw having a sprocket (11), which is supported in rotary fashion in a housing (10) and is for a saw chain (12) guided on a guide (13), and having a chain tension device (14) for longitudinally moving the blade (13), which device has a cam (15) ... | 05/20/2003 |
| 6094826 | Reciprocating slot cutting tool This invention is a tool for plunge cutting comprising a motor, a transmission connected to the motor and a blade assembly connected to the transmission, wherein the blades move in an oppositely reciprocating and sliding manner to provide plunge cuts of v... | 08/01/2000 |
| 6007541 | Dual-bladed reciprocating bone saw The invention relates to a handheld surgical power saw intended to be an integrated surgical tool or an attachment to a motorized surgical tool. The tool consists of two arms that reciprocate in opposite directions at all times. Attached to each arm is a ... | 12/28/1999 |
| 5867913 | Four square corner hole saw My interest was aroused by the lack of any power tool to help the electrical contractor cutting rectangular holes through walls for his wall boxes for switches and receptacles. I started making a model in 1992 only to find out there was no parameters to f... | 02/09/1999 |
| 5596810 | Machine tool A hand machine tool operated with two hands has a machine housing composed of insulating synthetic plastic shells, a fixed, web-shaped main handle formed as a part of the machine housing, an auxiliary handle, a drive including a motor and a transmission, ... | 01/28/1997 |
| 5473820 | Power-operated sword saw A power-operated sword saw comprises a plate-shaped sword having a lower region with a guiding groove, two saw blades reciprocatingly movable in opposite directions parallel to one another and each having a front saw blade tip and an opposite clamping end... | 12/12/1995 |
| 5349754 | Power saw with oppositely reciprocating saw blades A power saw has a sword having side walls which form a groove-shaped guide, and two parallel oppositely reciprocable saw blades having one longitudinal side provided with saw teeth and another longitudinal side provided with backs which are guided in the ... | 09/27/1994 |
| 5193280 | Saw blades and method of making same A saw blade for a two-blade, contra-reciprocating saw has two strips spot welded together. Teeth are formed by scallops cut along an edge of each strip with lands between these scallops. Abrasive grit, such as tungsten carbide chips, is brazed on the teet... | 03/16/1993 |
| 5155914 | Reciprocating saw-blade device A reciprocating saw-blade device includes: a case; a main spindle rotatably supported by the case; bearings respectively arranged in front and rear end sections of the case; upper and lower saw blades protruding forward beyond the case and supported by th... | 10/20/1992 |
| 5031324 | Power driven saw with reciprocating saw blades A power saw has two oppositely reciprocating saw blades guided and supported in a receiving slot in a support plate. The blades are supported during sawing along shoulders on their outside by lower edges of support sections of the support plate. The arran... | 07/16/1991 |
| 4999915 | Saws and saw teeth and blades therefor A saw blade comprises a support member having at least one edge, and, spaced along that edge, a series of slots in each of which is secured a saw tooth and in which a portion of the tooth is located within the slot and a further portion extends beyond the... | 03/19/1991 |
| 4979305 | Saw blade for power operated saw A sawing apparatus includes a guide and a pair of oppositely reciprocable saw blades mounted in a groove of the guide. Mounting portions of the saw blades disposed within the groove slidingly engage one another within an interface plane. Each saw blade in... | 12/25/1990 |
| 4969270 | Power driven saw with reciprocating saw blades A power saw has two oppositely reciprocating saw blades guided and supported in a receiving slot in a support plate. The blades are supported during sawing along shoulders on their outside by lower edges of support sections of the support plate. The arran... | 11/13/1990 |
| 4934056 | Sawblades for a power saw with reciprocating blades Sawblade for a powered saw with of the type in which two of the sawblades reciprocate side-by-side in a groove on the underside of the guidebar. A downward force from the guidebar is transmitted to a plurality of short longitudinally spaced ledge section ... | 06/19/1990 |
| 4893411 | Power sawblades for abrasive materials Sawblades for cutting materials containing abrasive grains or fibers with a power saw utilizing two reciprocating sawblades in contact with each other guided by a groove in a guidebar, all teeth on one blade pointing forwards and all teeth on the other bl... | 01/16/1990 |
| 4856195 | Handle arrangement for portable power tool A hand-held power tool, for example a reciprocating saw, a chain saw, or a hedge trimmer, has a rear handle and a T-shaped forward handle formed by a forwardly directed strut with a crossbar. Looped side handles are detachably mounted on each side of the ... | 08/15/1989 |
| 4798001 | Saw blade for a saw having reciprocating blades A saw blade, for a power saw having two such blades arranged adjacent and parallel to each other and reciprocating in opposite directions, comprises an elongate blade member having teeth along a bottom edge. The teeth comprise at least three types, a firs... | 01/17/1989 |
| 4784029 | Sawing method, and a device for utilization of the method A sawing method involving in one direction continuously driven saw blades (1, 2) or saw wheels, according to which two saw blades (1, 2) or saw wheels are arranged in an adjacent position to each other, with associated saw teeths extending in an opposed r... | 11/15/1988 |
| 4458421 | Counter-reciprocating double blade saw This invention relates to the counter-reciprocating double blade saws including a pair of the saw blades disposed in side by side relationship, one extremity of each of the two saw blades is connected to two counter-reciprocating holders driven by a power... | 07/10/1984 |
