Quotables
"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5081796 | Method and apparatus for mechanical planarization and endpoint detection of a semiconductor wafer A method and apparatus for mechanical planarization and endpoint detection of a semiconductor wafer or the like. The apparatus includes a polishing head for rotating the wafer under a controlled pressure against a rotating polishing platen. The polishing ... | 01/21/1992 |
| 5076022 | Grinding machine for grinding outer and inner surfaces A grinding machine for grinding outer and/or inner surfaces of a workpiece which is provided on its indexable wheel head with an outer surface grinding wheel, inner surface grinding wheel and a measuring device having a touch probe engagable with a refere... | 12/31/1991 |
| 5070655 | Machining process monitor A machine tool monitor having a machine power sensor and a machine vibration sensor transmitting respective vibration and power signals to a controller which process the signals and monitors the machines operation to detect a change in the machine's proce... | 12/10/1991 |
| 5033238 | Dental technician's work station A dental technician's work station is provided with a hand-held machining device and a suction device for removal of dust resulting from machining. Connection of the machining device to the suction device by a common data bus is provided, and the paramete... | 07/23/1991 |
| 5031360 | Broken blade detector for semiconductor die saws A dicing saw for semiconductors includes a defect detector which is used for stopping operation of the dicing saw when such operation would be adverse to the integrity of the work product (semiconductor dice). Infrared light from a light transducer is tra... | 07/16/1991 |
| 5022187 | Device for regulating the grinding weight for an ophthalmic glass grinding machine The device is of the type comprising a carriage slidably and pivotally mounted on a shaft (101), and an arm (102) connected to the carriage and bearing against and slidable along a rail (108) parallel to the shaft (101), the arm (102) bearing against the ... | 06/11/1991 |
| 5015300 | Method and apparatus for adjusting a preselected sweeping surface width of a revolving roll-type brush A method and apparatus is provided for adjusting a preselected sweeping area width of a revolving roll-type brush rotatable around an axis for the cleaning of roadways, airport runways and the like, wherein the spacing between the axis of the revolving br... | 05/14/1991 |
| 4934882 | Apparatus for monitoring the angular position of a workpiece Apparatus for monitoring or tracking the angular position of a rotating camshaft during grinding or milling of cams on the camshaft. The cams may be milled, but in the apparatus shown, they are ground by abrasive belts which are guided by actuators driven... | 06/19/1990 |
| 4930262 | Control system for surface grinding of like workpiece blanks In the control process for surface grinding a measuring sensor of a stationary electronic measuring unit with a memory determines the actual heights of a group of workpiece blanks in a precision grinding machine on workpiece mounts on a switchable spindle... | 06/05/1990 |
| 4908997 | Method and system for generating wide-range toric lenses A method and system for generating a lens by grinding a lens blank with a tool in a working position calls for a diamond tool to be disposed only angularly, the lens being moved in an X,Y relationship so that the relative cutting position is properly main... | 03/20/1990 |
| 4890421 | Automatic measurement system The present invention relates to an automatic measurement system and the method of employing the system with a cutting tool device. The measurement system includes a tool holder for mounting a cutting tool. A measurement probe is automatically mounted and... | 01/02/1990 |
| 4860499 | Apparatus for measuring grinding forces on ceramic parts A spark plug grinding machine is equipped with force sensors to measure grinding forces and other forces attendant to a grinding operation. Ceramic spark plug insulators are carried by spindles on a Ferris wheel into a grinding station. A control wheel en... | 08/29/1989 |
| 4850152 | Apparatus for lapping and polishing optical surfaces The workpiece which is moved relative to the tool is processed by a tool configured in the form of a flexible membrane. On the rearward side of the membrane, loading units are arranged with the force of each unit being individually controlled. The pressur... | 07/25/1989 |
| 4837983 | Drill bit sharpening apparatus A walking beam conveyor (54) delivers drill bits (B), one at a time, into a feed position. A pushrod (52) moves a drill bit (B) from the feed position into the nosepiece (36) of a robot arm (28). The drill bit (B) enters the nosepiece (36) shank end first... | 06/13/1989 |
| 4831790 | Abrasive jet blasting machine for a continuous abrasive jet blasting treatment of wire-shaped and rod-shaped workpieces An abrasive jet blasting machine for a continuous abrasive jet blasting treatment of wire-shaped and rod-shaped workpieces includes a plurality of centrifugal wheel units arranged angularly offset relative to each other. To each centrifugal wheel unit are... | 05/23/1989 |
| 4807400 | Measuring apparatus for grinding machines for cylinders with structural and surface checking devices The independent measuring apparatus for grinding machines for cylinders, rollers and the like, according to the invention, consists of a column supported by an independently movable carriage on a fixed bench of the machine, on which a gage is supported, h... | 02/28/1989 |
| 4785589 | Process for measuring and grinding the profile of a rail head By means of several measuring sensors (C1 to C6), the distance (h1 to h6) from several generatrices (s1) to s6) of the rail-head profile to a reference base are measured and are compared as actual values with predetermined desired distance values. The gri... | 11/22/1988 |
| 4736546 | Tire uniformity grinder and method The apparatus for improving tire uniformity includes contra-rotating grinding wheels for removing tire material from the upper and lower shoulder portions of the tire. The grinders are moved into grinding engagement with the tire along a path that is defi... | 04/12/1988 |
| 4709509 | Numerically controlled grinding machine A numerically controlled grinding machine equipped with two registers in which data concerning the positions of the cylindrical and shoulder grinding surfaces of a grinding wheel is stored. A reference point is established on the wheel spindle stock. A re... | 12/01/1987 |
| 4584796 | Numerical control grinding machine In a numerical control grinding machine, movements of a wheel head and a work table respectively in first and second directions perpendicular to each other are controlled by reference to first and second present position registers which respectively repre... | 04/29/1986 |
| 4535570 | Machine for beveling An apparatus for machining the periphery of a work is provided with a grinding wheel, a holding mechanism for holding the work, and a moving mechanism for moving the holding mechanism toward or away from the wheel. A touch sensor for detecting the contact... | 08/20/1985 |
| 4535569 | Arrangement for starting-up a position regulator of a grinding wheel support A grinding wheel support, for instance of a large gear grinding machine, moves up and down during the grinding operation in a non-horizontal guide and is driven by a linear motor which does not possess any self-locking action, for instance a piston-and-cy... | 08/20/1985 |
| 4501095 | Method and apparatus for grinding turbine engine rotor assemblies using dynamic optical measurement system A rotor assembly comprised of a multiplicity of blades mounted around the periphery of a disk has the blade tips ground to great diametrical precision when the assembly is rotated at a high speed in excess of 1000 rpm in a special grinding process. Indivi... | 02/26/1985 |
| 4480412 | In-process grinding gage An in-process grinding gage providing a means for continuously indicating the diameter of a cylindrical workpiece being ground comprising a mounting bracket gaging head means including a body including fixed upper and center pads and an arm pivotally secu... | 11/06/1984 |
| 4459783 | Workpiece weighing system for conditioning grinders A weighing system for a grinding machine which calculates the weight of material removed by the grinding machinery during a grinding procedure. Power signals from a watt meter indicate the power consumed by the motor driving the grinding wheel. The weight... | 07/17/1984 |
| 4404772 | Cylindrical grinding machine A cylindrical grinding machine comprising chucks for supporting and rotating a workpiece about a selected axis, a wheelhead assembly selectively displaceable transverse to the axis including a rotatable grinding wheel for effecting stock removal from the ... | 09/20/1983 |
| 4363196 | Gage controlled grinding method A gage controlled grinding method for oppositely disposed commonly tapered end bores in a workpiece, maintaining a constant spacing of two identical bore gage diameters independent of part length is disclosed. A machine such as an internal grinding machin... | 12/14/1982 |
| 4340326 | Broken bit detector A broken bit detector for use in conjunction with printed circuit board drilling machines or the like. The detector includes a light emitter and a light sensor contained within a pressure foot. The light emitter projects a beam of light through a central ... | 07/20/1982 |
| 4293913 | Numerical controller for a grinding machine A numerical controller having a digital computer with a memory device, a feed control device responsive to feed control data supplied from the computer for controlling the servomechanisms of a grinding machine, a data write-in device manually operable for... | 10/06/1981 |
| 4229911 | Precision blocking of semi-finished lens blanks Method and apparatus for the precision blocking of semi-finished lens blanks by the adjustment of each such blank until it occupies a prescribed position where an alloy hub or "block" is removably affixed to the blank so that it can be properly gripped fo... | 10/28/1980 |
| 4228781 | Tramming fixture for positioning a dressing wheel A tramming fixture and method for accurately tramming in, or positioning, a dressing wheel with respect to a dressing axis of a dressing machine so that all points on the surface of the dressing wheel which contact the workpiece during dressing are equi-d... | 10/21/1980 |
| 4226143 | Method of making steel rule type piercing and blanking dies A steel rule first die is made by mounting steel rule elements, and other shearing elements if desired, in a die block in known manner. A punch die blank is mounted on a support having means for aligning the blank with such shearing elements. One or more ... | 10/07/1980 |
| 4217736 | Method for automatically grinding lenses An improved automatic lens grinding machine and process for shaping lenses to fit any particular glasses frame. The machine includes a recording assembly by which the pattern of a glasses frame which will hold a lens is recorded on a heat or photosensitive ... | 08/19/1980 |
| 4154024 | Electric control device for an automatic grinding machine Apparatus for detecting irregularities in an automated machine grinding procedure, the grinding machine including a workpiece, a chuck for holding the workpiece, and a grinding wheel controllably applied to the workpiece for removing a predetermined amoun... | 05/15/1979 |
| 4106241 | Grinding gauge support Relates to gauging mechanism for machine tools such as high production grinding machines and the like, and more particularly to a quadrilateral arrangement of arms for guiding movement of a gauge in opposite directions along two angularly related paths of... | 08/15/1978 |
| 4088856 | Perimeter safety switch mounted to support disposed remote from machine body The disclosure is directed to a perimeter safety switch for machines that require an operator. The safety switch comprises a longitudinal support member that extends around the permimeter of the machine at approximately waist level, and is spaced outwardl... | 05/09/1978 |
| 4080759 | Grinding machine Grinding machine with a provision for setting up grinding cycle parameters and then locking them in the selected condition so that they are not accessible to the normal operator. The control is provided with lamps to indicate machine events and event fail... | 03/28/1978 |
| 4041649 | Alignment device An alignment device of the type primarily intended for use in combination with an ophthalmic cylinder surfacing machine to insure proper optical axis alignment of the lens blank, to the lap, as it is being ground. The device includes a base member which i... | 08/16/1977 |
| 4012870 | Apparatus for measuring and changing vibration frequency of metal B A method of measuring and, where necessary, modifying the natural vibration frequency of a metal bar, more especially a ferromagnetic bar, comprising freely suspending the bar in a constant magnetic field, subjecting the bar to action from outside to make... | 03/22/1977 |
| 3953943 | Apparatus for automatically detecting and eliminating flaws on slabs or billets Apparatus for automatically detecting and eliminating flaws on slabs or billets which comprises a flaw detector and a grinder both mounted on a common carriage reciprocable alongside the slab or billet under inspection. The detector and the grinder are mo... | 05/04/1976 |
