Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 6420974 | Control system for pressure-sensitive protective devices A control for use with pressure-sensitive devices, such as in a machine-guarding application. A plurality of pressure-sensitive devices, such as pressure-sensitive safety mats, are operatively connected to produce a disable signal and a status signal. An ... | 07/16/2002 |
| 6340933 | Semiconductor wafer transport pod having cover latch indicator A pod for transporting a cassette containing semiconductor wafers includes a base and a cover removably carried on the base for protectively enclosing the cassette. A latching mechanism for latching the cover on the base is provided with an electrical sen... | 01/22/2002 |
| 6308114 | Robot apparatus for detecting direction of sound source to move to sound source and method for operating the same A robot apparatus for detecting a sound signal outputted from a sound signal generating unit to move to a position of the sound signal generating device, wherein the sound signal has a specific pattern, includes: at least three sound receiving unit (114) ... | 10/23/2001 |
| 6297744 | Aerialift warning system and method An aerialift warning system and method for use on aerialift equipment to warn the aerialift operator to fasten his/her safety lanyard and to warn persons within the zone of danger below the aerialift boom/basket of the impending danger posed by the descen... | 10/02/2001 |
| 6257077 | Remotely powered sensing arrangement for a rotatable device A remotely powered electronic part sensing system is integrated with a chuck of a rotatable device such as a lathe machine for sensing the position of a part after loading of the part onto the lathe. The sensing system includes a detecting sensor arrangem... | 07/10/2001 |
| 6208944 | Method for determining and displaying spectra for vibration signals A portable electronic vibration measurement device, detects a large number of structure-borne sound signals using a predetermined sequence of a plurality of specific individual measurements each plurality of measurements taken at a different sampling freq... | 03/27/2001 |
| 6201481 | Safety device for furniture The invention relates to a safety device for furniture with at least one movable element which can be moved by a motor-driven positioning drive controlled by operating controls, particularly the head and/or foot of a base for a bed, or a seat and/or backr... | 03/13/2001 |
| 6140931 | Spindle state detector of air bearing machine tool An electric path (E) is formed by connecting a spindle (11), a tool (12), a table (4), a base (2), a column (5) and a housing (13) including a capacitor (C0) having the spindle (11) and the housing (13) as electrodes, and electric current is sent to the e... | 10/31/2000 |
| 6133835 | Identification transponder An identification transponder comprising an identification code generator (10) embodied as an integrated circuit predominantly comprising organic materials. The integrated circuit may be provided on an anti-theft sticker (5) accommodating an LC resonant c... | 10/17/2000 |
| 6124793 | Temperature monitoring and calibration system for control of a heated CVD chuck A system coupleable to a heated wafer chuck control system provides an indication that the heated chuck is operating at a temperature outside of a desired operational range. An operational temperature circuit generates an operational temperature limit sig... | 09/26/2000 |
| 6118374 | Process and device for the recognition of screws used in extruders or metering devices The invention concerns a process and a device for the recognition of screws used in extruders or metering devices. In order to create a process that excludes the possibility that mixtures of granulates or powders with incorrect mixing ratios occur through... | 09/12/2000 |
| 6114965 | System for monitoring the dynamic tooling/shutheight deflection activity within a press machine A method and apparatus for dynamically monitoring in real-time the operation of a press machine and tooling during actual production operations, in order to evaluate the true interaction between actual vibration activity occurring at multiple locations wi... | 09/05/2000 |
| 6111515 | Method of and apparatus for preventing accidents during working with hand-held tools with a rotatable working tool A method of and an apparatus for preventing accidents caused by blockage of a rotatable tool when working with a hand-held tool including the rotatable tool (8), a drive motor (7) for driving the rotatable tool (8), and means (5, 6) for interrupting trans... | 08/29/2000 |
| 6085121 | Device and method for recommending dynamically preferred speeds for machining A hand-held, portable device recommends dynamically preferred speeds for stabilizing or reducing undesirable vibration such as chatter in a machining process. The device may be applied to machining processes such as turning, boring, milling and drilling w... | 07/04/2000 |
| 6014082 | Temperature monitoring and calibration system for control of a heated CVD chuck A system coupleable to a heated wafer chuck control system provides an indication that the heated wafer chuck is operating at a temperature outside of a desired operational temperature range for the chuck. The system comprises: an operational temperature ... | 01/11/2000 |
| 5986549 | Position and movement reasonant sensor An object sensing system (10) employs a resonant sensor (20) that receives drive energy coupled from an oscillator (12) operating at a frequency equal or close to the resonant frequency of the resonant sensor. The resonant sensor preferably includes an pl... | 11/16/1999 |
| 5949352 | System and method for the wireless signal transmission between a measuring head and a remote receiver A system for transmitting a radio-frequency signal from a contact detecting probe (1), powered by a battery (4), to a remote interface (11), that includes the transmitting, by way of coded serial signals, of messages containing information regarding the s... | 09/07/1999 |
| 5940787 | Apparatuses and methods of monitoring the condition of tools and workpieces A method and apparatus for monitoring the condition of a tool or a workpiece includes an electromagnetic energy source for directing electromagnetic energy toward the tool and also receives electromagnetic energy reflected off the tool. A detector is arra... | 08/17/1999 |
| 5929757 | Method and apparatus for making through-bores The invention relates to a method and apparatus for marking entrance and exit opening sites in opposite surfaces of a wall member of a perforation to extend therethrough and is provided, at one surface at a site corresponding to one of the entrance and ex... | 07/27/1999 |
| 5905440 | Acoustic emission severance detector and method The invention has utility generally for monitoring any part for severance of the part. The invention is specifically useful for monitoring severance of a tension blade in a tension blade grid. For general monitoring of a part, the apparatus has wireless c... | 05/18/1999 |
| 5903462 | Computer implemented method, and apparatus for controlling a hand-held tool The invention described here in is a computer-implemented method and apparatus for controlling a hand-held tool. In particular, the control of a hand held tool is for the purpose of controlling the speed of a fastener interface mechanism and the torque ap... | 05/11/1999 |
| 5898379 | Wireless cycle monitoring system for power tools A pneumatic tool having a radio frequency transmitting monitor as part of a system for monitoring operation of the pneumatic tool is disclosed. A pneumatic pressure valve including a sensor that generates a signal in response to sensing a predetermined co... | 04/27/1999 |
| 5886629 | Tool for use with telecommunications modules A tool for use in manipulating telecommunications modules comprises a housing having a grip, engagement means for engaging with a module so as to securely grasp the module and a transmitter/receiver unit for transmitting signals to and receiving informati... | 03/23/1999 |
| 5880954 | Continous real time safety-related control system A safety-related control system (SRCS) designed to safeguard personnel operating hazardous production equipment. The SRCS integrates the safety-related part of a machine into one homogenous system for the purpose of increasing safety. In so doing, the SRC... | 03/09/1999 |
| 5850184 | Ultrasonic tool confirmation sensor A tool detection system combines a sensor nozzle with an ultrasonic transducer capable of propagating and detecting ultrasonic waves. A wave is propagated in a coolant fluid stream directed at a tool to be monitored. A control unit powers the ultrasonic t... | 12/15/1998 |
| 5841290 | Method for sensing the presence and absence of an object A sensing device and a method for sensing the presence and absence of an object in a machine using the sensing device. The sensing device generally including a sensing mechanism, a resistive element, and a control mechanism communicatively coupled to the ... | 11/24/1998 |
| 5739433 | Touch off probe In a first preferred embodiment a transmitting acoustic transducer mounted on the tool axis or spindle of a grinding tool affords a method for pre-contact recognition and control (touch-off) independent of tool grit, workpiece material, and all natural ma... | 04/14/1998 |
| 5711022 | Starting position control for demolition apparatus A method and apparatus for demolishing a structure is disclosed. A crusher member (12) is provided supported by a support frame (14). A reference position vertically above an operator is established. The relative distance between the crusher member (12) a... | 01/20/1998 |
| 5691647 | Object sensing device and method for using same A sensing device and a method for sensing the presence and absence of an object in a machine using the sensing device. The sensing device generally including a sensing mechanism, a resistive element, and a control mechanism communicatively coupled to the ... | 11/25/1997 |
| 5689429 | Finger wear detection for production line battery tester A method for detecting wear in a battery tester probe. The method includes providing a battery tester unit having at least one tester finger, generating a tester signal using the tester fingers and battery tester unit with the signal characteristic of the... | 11/18/1997 |
| 5664985 | Method and apparatus for texturizing disks A method and apparatus is disclosed for texturizing magnetic storage disks. The disk texturizing apparatus utilizes a combination of servomotors for rotating the disk and oscillating the disk towards and away from a texturizing media. The servomotors are ... | 09/09/1997 |
| 5619180 | Apparatus for providing vibrotactile sensory substitution of force feedback A feedback apparatus for an operator to control an effector that is remote from the operator to interact with a remote environment has a local input device to be manipulated by the operator. Sensors in the effector's environment are capable of sensing the... | 04/08/1997 |
| 5602533 | Device for sensing a state change in a mechanical system, method for monitoring the state of a mechanical system and use of said device A device for sensing a state change of a mechanical system, comprises at least one sound emitter (E), a receiver (R) as well as an electronic circuit (4) which allows to compare the received sound signal with reference values. The state of the mechanical ... | 02/11/1997 |
| 5587931 | Tool condition monitoring system A tool monitoring system monitors the condition of an electrically powered tool performing a cyclical operation. The tool monitoring system operates generally in two modes: learning mode and monitor mode. In learning mode, the tool monitoring system gathe... | 12/24/1996 |
| 5541588 | Control signal transfer device for a position detecting sensor A control signal transmitting device is used for a control device, such as a position detecting device. The transmitting device includes a position detecting sensor, and a receiving device situated near the position detecting sensor. The position detectin... | 07/30/1996 |
| 5451924 | Apparatus for providing sensory substitution of force feedback A feedback apparatus for an operator to control an effector that is remote from the operator to interact with a remote environment has a local input device to be manipulated by the operator. Sensors in the effector's environment are capable of sensing the... | 09/19/1995 |
| 5432503 | Electronic slope detector An electronic bubble level display is provided for determining surface normality when coupled with three sensors (18, 20, 22) sensing distance to the surface. The signals from the sensors are provided to an electronic processor (34) for computing the surf... | 07/11/1995 |
| 5428556 | Apparatus for predicting tool life There is provided an apparatus for predicting a tool life which reports a tool life ratio to an operator or a control device, when a remarkable change of work load values is detected. In a predicted life setting section 122, there is set a percentage of a... | 06/27/1995 |
| 5407265 | System and method for detecting cutting tool failure Failure detection in an operating cutting tool utilizing a frequency domain analysis of the vibration of the cutting tool. A signal is generated based on vibration of the tool during its operation to determine the energy of the signal in a plurality of si... | 04/18/1995 |
| 5351039 | Toolholder device for machine tools A toolholder device for a machine tool comprises a holder body driven by a machine tool drive spindle, and a toolholder supported on the holder body so as to be circumferentially and axially displaceable. The holder body and the toolholder are provided wi... | 09/27/1994 |
