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| Number | Title | Issue Date |
| 6481509 | Impact generator In a conventional impact generator, a great shock is generated when a weight collides with a rotary member, and a rotary shaft of the rotary member and a bearing supporting the rotary shaft receive the great shock. Therefore, it is necessary to employ a b... | 11/19/2002 |
| 6250401 | Rotary impacting apparatus A rotary impacting apparatus is provided which comprises a housing, a rotor rotatably accommodated in the housing, a driving source for rotating the rotor about a rotation axis, a main reciprocative implement reciprocatively held by the housing, and an im... | 06/26/2001 |
| 5921300 | Log-splitting device A power log splitter includes a base (28) and a wedge (12) and a ram (34) mounted on the base for receiving a log (31) lengthwise between them. A motor (16) turns a cam means (26) to deliver a series of short, quick blows onto one of the wedge (12) and ra... | 07/13/1999 |
| 5667038 | System and method of conversion of gravitation in this impulse of force Two elements placing one into another and having different masses are connected with one another so that during one portion of their rotation they rotate jointly, and then when one of the elements reaches a break of its way the other element continues the... | 09/16/1997 |
| 5554210 | Suspension device and a rapping mechanism for electrodes in an electrostatic precipitator A suspension device and a rapping mechanism for electrodes in a high voltage supplied electrostatic precipitator, wherein the suspension device has at least one horizontally arranged supporting element from which a number of electrodes are suspended, the ... | 09/10/1996 |
| 5488997 | Rotary impacting apparatus A rotary impacting apparatus comprises a housing, a rotor rotated in the housing, an impact member eccentrically held by the rotor, and a main reciprocative implement held reciprocatively at a forward end portion of the housing. The rotor rotates to hit t... | 02/06/1996 |
| 5051119 | Rapping mechanism for precipitator electrodes A rapping mechanism is provided for rapping a row of electrodes (1) in an electrostatic precipitator. The electrodes (1) consists of vertical strip plates suspended from their upper ends and the mechanism comprises a horizontal rapping bar (3) connected w... | 09/24/1991 |
| 5002134 | Rotary impacting apparatus A rotary impacting apparatus comprises rotary member drivingly rotated about a rotational axis within a casing. An impact member is loosely held by the rotary member so as to be movable toward and away from the rotational axis within a limited range. A ho... | 03/26/1991 |
| 4979574 | Punch tool apparatus and method A punch tool for applying force to a work piece includes a body, a grip mounted on one end of the body, a punch connected to the other end of the body, and an anvil pivotally connected to the body between the grip and the punch. A method for disengaging a... | 12/25/1990 |
| 4884641 | Backhoe hammer A backhoe assembly (10) comprises a boom (12) for pivotal attachment to a machine (11). A bucket (14) is pivotally supported by the boom (12) for rotation about a support axis (16). A hydraulic cylinder (34) having a piston rod (36) raises and lowers the ... | 12/05/1989 |
| 4794830 | Tool for loosening fasteners A tool for loosening fasteners, comprises an applicator bar formed with a socket for receiving the fastener to be loosened, a handle fixed to a housing rotatable about the applicator bar for loosening the fastener received in the socket, a hammer within t... | 01/03/1989 |
| 4732506 | Surface crushing apparatus This invention describes an apparatus for breaking a hard surface such as a concrete road or bridge deck and essentially consists of a support for a torsional spring which is horizontally fixed to the support with a spaced rotational journal so that the t... | 03/22/1988 |
| 4708209 | Manually operated impact driver Hand held tool for applying a rotational impact to a fastener. Means including a windable spring are mounted on the tool body for storing energy, which can be release and transmitted mechanically to other means engaging the fastener, to apply a rotational... | 11/24/1987 |
| 4624324 | Turning mechanism operating alternately in opposite directions to facilitate the driving in or extracting of piles The invention relates to a turning mechanism for driving in or extracting piles by means of tangential rotary blows being imparted by a rocker arm equipped with balance weights and arranged in a rotary manner relative to the pile. In order to render super... | 11/25/1986 |
| 4603747 | Apparatus for removing internal tiles from chimneys Apparatus is provided for removing the interior tile lining from brick chimneys. The apparatus includes an assembly that is lowered into the chimney, the assembly comprising a reversible electric motor mounted within a frame, and a weighted impact member ... | 08/05/1986 |
| 4557337 | Impact wrench An impact wrench for using fastening or unfastening fasteners comprises a cylindrical rotor coupled to a motor shaft, said cylindrical rotor including a projection on its inner surface, the projection having a circumferential width and an axial length; an... | 12/10/1985 |
| 4511282 | Pavement penetrating tool An improved penetrating tool for pavement breakers is disclosed. The tool of the present invention has a flange with a striking surface which extends in the direction of motion of the vehicle. The striking surface is curved so that the closing angle, defi... | 04/16/1985 |
| 4460049 | Impact wrench An impact wrench includes a hammer, an anvil and a rotor driven by a motor, the hammer being swingeable in either direction with respect to the rotary axis of the rotor, the hammer resting on the anvil in a spring-loaded state so as to enable the hammer t... | 07/17/1984 |
| 4433736 | Device for avoiding secondary impacts resulting from the bounces of a mass against a target-member A device for preventing secondary impacts of a mass against a target member, as used in particular for generating shear waves in the earth, is provided. The mass is secured at the end of a pivotable rigid arm actuated by driving device, and the driving de... | 02/28/1984 |
| 4278295 | Impacting rock breaker PCT No. PCT/US79/01087 Sec. 371 Date Dec. 13, 1979 Sec. 102(e) Date Dec. 13, 1979 PCT Filed Dec. 13, 1979 An impactor (10) having a fracturing portion (11) including a crank (12) and a force transferring structure (13). The force transferring structure (1... | 07/14/1981 |
| 4144939 | Apparatus for converting centrifugal energy into percussive energy An apparatus for converting centrifugal energy into percussive energy is operated by a motor continuously rotating a driven shaft whereby a rocking shaft is caused to oscillate about a pivot axis under the influence of the centrifugal force produced by a ... | 03/20/1979 |
| 4084645 | Apparatus for securing T-edging and similar edging bands A relatively quiet-operating rotary hammer for use in apparatus for securing T-edging and similar edging bands. The hammer includes a pivoted hammer head that is intermittently and continuously impacted to provide a hammering action. The hammer is impacte... | 04/18/1978 |
