Bizarre Patents
Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 7278777 | Hand held concrete vibrator A concrete vibrator powered by a portable drill includes a housing having a contacting pad at one end and an axial bore. A camshaft is received within the bore. A transverse retainer is secured on the camshaft for retaining the camshaft within the bore. The camshaft... | 10/09/2007 |
| 7264065 | Shifting device A shifting device has a first shifting element, a second shifting element, and a rotatably supported user-operation element including a converter element for converting a rotary motion of the user-operation element into a displacement of the first shifting element i... | 09/04/2007 |
| 7137458 | Impact mechanism for a hammer drill An impact mechanism for a hammer drill, which has a housing and a drill bit protruding outside the housing, is provided. The mechanism includes firstly an impact platform within the housing; the impact platform is in connection with the drill bit for receiving impac... | 11/21/2006 |
| 7108079 | Electric power tool A cover which covers outer peripheries of fastening screws are disposed on an outer periphery of a hammer case. A stopper which detachably positions and fixes the cover to the outer periphery of the hammer case is disposed. ... | 09/19/2006 |
| 7032687 | Percussion device Percussion device, includes a housing and two movable bodies, an impact body for an impact pin protruding from the housing, and a balancing body for counterbalancing impact motions of the impact body. The housing includes springs, which constantly strive to bring th... | 04/25/2006 |
| 7021401 | Hammer An electrically powered hammer comprising a hammer housing (10,15) with a hollow cylindrical spindle (4) mounted within it and an air cushion hammering mechanism mounted within the spindle for generating repeated impacts on a tool or bit of the hammer ... | 04/04/2006 |
| 6959478 | Shockproof spindle A shockproof spindle includes a spindle inserted into an elastomer having a compressible structure, and a sleeve having a hollow cylinder, sequentially. The sleeve caps the elastomer while the elastomer is pressed on the top of the base fixed at the bottom end the s... | 11/01/2005 |
| 6913090 | Hammer A hand-held powered hammer comprising a hammer housing; a hammering mechanism; a spindle rotatably mounted within the housing; the spindle having a first mode of operation in which the spindle is rotatable within the housing and a second mode of operation in which t... | 07/05/2005 |
| 6722448 | Driving tool having an impacting device A driving tool includes a block and an impactor received in a front and a rear chambers of a handle, a driving shank attached to the block, and a plunger engaged between the block and the impactor. The impactor includes a cavity formed in one end for selectively rec... | 04/20/2004 |
| 6666284 | Rotary hammer A rotary hammer includes a spindle 18 which can be rotatably driven by an intermediate shaft 24 by way of a drive device. A tool holder 16 is arranged for rotation with the spindle 18, and for releasably holding a bit or tool for selective rotation and/or... | 12/23/2003 |
| 5769172 | Power tool A bi-directional power tool for driving fasteners and for drilling purposes. The power tool comprises a rotary piston driving mechanism and a linear sliding member that transform a longitudinal motion of a piston in a cylinder to a rotation movement of a ... | 06/23/1998 |
| 5673758 | Low-noise impact screwdriver An improved structure of an impact screwdriver is provided which achieves a low-noise screw-driving operation. The impact screwdriver includes a clutch assembly for transmitting torque provided by a motor to a tool bit. The clutch assembly includes a toqu... | 10/07/1997 |
| 5350025 | Nonrotary piston for jackhammer and removable splined nut therefor A fluid-activated, percussive impact tool has a piston therein that reciprocates longitudinally but not rotationally. The piston activates a wrap spring clutch to rotate the drill steel. A removable splined nut in combination with the tool's housing restr... | 09/27/1994 |
| 5337841 | Hammer type soil excavating machine A hammer device is coupled to an outer portion of a handle, an operating portion is attached to the other portion of the handle, a holding section is attached to one side of the operating portion, and at the same time, a pair of excavators is rotatably at... | 08/16/1994 |
| 5305835 | Nonrotary piston for jackhammer and removable splined nut therefor A fluid-activated, percussive impact tool has a piston therein that reciprocates longitudinally but not rotationally. The piston activates a wrap spring clutch to rotate the drill steel. A removable splined nut in combination with the tool's housing restr... | 04/26/1994 |
| 5191946 | Wrap spring clutch for percussive apparatus A clutch assembly transmits rotary motion in a percussive apparatus to a drill steel. The clutch assembly includes a first hub having a first cylindrical surface formed thereon. A second hub which is substantially rotationally coupled to the drill steel h... | 03/09/1993 |
| 5139093 | Wrap spring clutch for percussive apparatus A clutch assembly transmits rotary motion in a percussive apparatus to a drill steel. The clutch assembly includes a first hub having a first cylindrical surface formed thereon. A second hub which is substantially rotationally coupled to the drill steel, ... | 08/18/1992 |
| 4189011 | Hammer drill A hammer drill has a housing and a spindle mounted on the housing for rotating and reciprocating longitudinal movement. The spindle has a leading end provided with an end portion extending outward through a hole in the housing, facing a wall to be drilled... | 02/19/1980 |
| 3955628 | Hammer drill A driven output shaft is mounted in a housing and has freedom of limited axial displacement between a first and a second position. A biasing spring permanently biases the output shaft to the first position. An impact member surrounds the output shaft and ... | 05/11/1976 |
| 3943782 | Power hammer The striker is mounted in a barrel for axial reciprocal movement thereby to impart successive hammer blows to the end of a tool shank element extending into one end of said barrel. An actuator is connected to the piston by lost-motion means. A motor drive... | 03/16/1976 |
