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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 |
| 4873792 | Polishing apparatus Apparatus for polishing or grinding specimens in which the pressure between the sample and the platen against which it presses for grinding or polishing is controlled by a feedback system, which includes a strain gauge from which the sample-holding grindi... | 10/17/1989 |
| 4860498 | Automatic workpiece thickness control for dual lapping machines A device for automatically sizing (thickness control) a workpiece of a double wheeled lapping machine, during the lapping process with simultaneous runout of the lower lap compensation. The device provides an annular ring attached in parallelism to the up... | 08/29/1989 |
| 4854083 | Polishing machine using super abrasive grains A polishing machine comprising: a rotary abrasive tool having a circular working face which comprises a mass of super abrasive grains, the face driveable by a motor to rotate about an axis, several arbors which, each, have an inversed cup-shaped work hold... | 08/08/1989 |
| 4839992 | Polishing device On a frame, a rotary grindstone is rotatably provided in such a manner that the upper surface of the rotary grindstone serves as a grinding side and a workpiece holding device which holds a workpiece and abuts the workpiece against the grinding side of th... | 06/20/1989 |
| 4837979 | Polishing device The upper portion of a frame of a lapping device is provided with a device for supplying a workpiece, a grindstone, and a delivering device, and a movable arm is horizontally and movably supported by a support column of the frame in such a manner that the... | 06/13/1989 |
| 4831784 | Polishing apparatus for end faces of optical fibers An apparatus for polishing end faces of optical fibers so that they are each given a convex spherical surface. The optical fibers are mounted on a jig so that their end faces are pressed against a polishing film attached to a rotary disk. The polishing fi... | 05/23/1989 |
| 4707945 | Upper plate driving system for surface lapping machine An upper plate driving system is employed on a surface lapping machine. By this invention, poor performance and work-piece breakage can be avoided by providing a smooth connection between the upper plate and lower plate during operation. The driving syste... | 11/24/1987 |
| 4707948 | Float lapping fixture Described is a technique and associated fixture for lapping magnetic recording heads in a group such that each head is mounted on a "free floating" part in the fixture, being biased for lapping only by the weight of this part and being individually remova... | 11/24/1987 |
| 4607496 | Method of holding and polishing a workpiece A method of holding an polishing a workpiece whereby a liquid such as water is applied between the workpiece and a support member and the liquid is frozen to secure the workpiece to the support member. A polishing member is positioned in contact with the ... | 08/26/1986 |
| 4481741 | Polishing machines incorporating rotating plate The invention relates to improvements in polishing machines incorporating a rotating plate. The upper face of the rotating plate is provided with a groove of circular section, in which is removably retained the base of a collar or screen, which defines on... | 11/13/1984 |
| 4450652 | Temperature control for wafer polishing A wafer workpiece polishing temperature control method and apparatus are provided wherein wafers are mounted upon a rotatable pressure plate assembly positioned in rotatable contact with a turntable assembly supported polishing pad, the turntable assembly... | 05/29/1984 |
| 4359840 | Automatic grinding apparatus to control uniform specimen thicknesses This invention is directed to a new and improved grinding apparatus comprising (1) a movable grinding surface, (2) a specimen holder, (3) a displacing device for moving the holder and/or grinding surface toward one another, and (4) at least three devices ... | 11/23/1982 |
| 4343112 | Apparatus for grinding metallographic specimens A grinding machine for grinding and polishing metallographic specimens. A multiple-grinder, indexable, vertical grinder assembly is supported on a rigid frame enclosed within a housing. A rotating, vertically positionable specimen holder assembly is also ... | 08/10/1982 |
| 4319432 | Polishing fixture A polishing assembly and fixture providing a vertically movable pressure plate including a depending supporting member for a plurality of workpiece chucks positionable under pressure upon a rotatable polishing lap plate.... | 03/16/1982 |
| 4313284 | Apparatus for improving flatness of polished wafers Apparatus for improving polished wafer flatness such as slices of semiconductor materials through mounting of the wafers onto a deformable thin disc carrier which is mounted through a resilient device to a rotable pressure plate, the combined mounting bei... | 02/02/1982 |
| 4270314 | Bearing mount for lapping machine pressure plate This disclosure teaches structure for mounting a pressure plate relative to its supporting shaft in such a manner that axial forces are transmitted between the shaft and pressure plate while yet providing that the plate can freely rotate and swivel relati... | 06/02/1981 |
| 4270316 | Process for evening out the amount of material removed from discs in polishing In conventional polishing machines, uneven transmission of pressure causes ifferent degrees of abrasion of the polished discs which results in different thicknesses over one disc and also with respect to other discs in one polishing batch. This problem is ... | 06/02/1981 |
| 4132037 | Apparatus for polishing semiconductor wafers Semiconductor wafer polishing apparatus is described having a sheet of wafer mounting material on its carrier to rigidly hold a plurality of wafers to be polished during the polishing operation. The mounting material includes a lamina of a polymeric mater... | 01/02/1979 |
| 4081928 | Silicon slice carrier block and plug assembly A carrier block and plug assembly for use in polishing semiconductor slices and includes a block of stainless steel onto which is secured a Delrin retainer with Delrin plugs seated on the block and within the retainer. A Mylar spacer of variable predeterm... | 04/04/1978 |
| 4020600 | Polishing fixture A high pressure polishing fixture assembly having a vertically movable pressure plate providing depending means for engagement with a plurality of workpiece-carrying heads positionable under pressure upon a rotatable polishing plate.... | 05/03/1977 |
| 4009539 | Lapping machine with vacuum workholder A lapping machine comprising a removable workholder adapted to be mounted through a vacuum system upon a supporting arm rotatable about a horizontal axis, with the vacuum system functioning to retain a workpiece upon the workholder as the same is rotated ... | 03/01/1977 |
| 3977130 | Removal-compensating polishing apparatus A polishing apparatus is provided having a flat, stiffly elastic mounting plate for the workpieces. The workpieces are placed in contact with a rotating polishing plate but are kept from rotating along with it by a holder secured to the mounting plate. Th... | 08/31/1976 |
| 3971165 | Ring manufacture, productive of face contact seal Methods, apparatus, and improved structure having as their common basis the sequence of collapsing a piston ring in a fixture approximating engine bore diameter, and separately lapping a major portion of the ring side and a remaining locality -- narrow in... | 07/27/1976 |
| 3968598 | Workpiece lapping device The grain processing machine of this invention includes a supporting member for supporting work to be processed, a first rotation drifting motor including a rotating shaft for rotating the supporting member in one direction, a rotating member for grain pr... | 07/13/1976 |
| 3931696 | Device for making sections for specimens and specimen supports therefor Device for making sections for specimens and specimen support therefor, namely for thin sections and ground surfaces of metallographic specimens for microscopic analyses. The device includes a rotatable polishing wheel with at least two of the specimen su... | 01/13/1976 |
