Famous Patents
British merchant Peter Durand invented the tin can in 1810.
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 |
| 7301113 | Diaphragm for use in switch, method for manufacturing thereof, membrane switch, and input device A dome-shaped diaphragm includes a convex portion; a base portion provided on an outer periphery of the convex portion; and a pressing force reducing portion provided in at least one of the convex portion and the base portion. Examples of the pressing force reducing... | 11/27/2007 |
| 7253720 | Programmable push button A programmable push button having a microcontroller located therewithin to provide a switching signal to operate an electronic switch and thereby enable power to be supplied from a source of power to a load to initiate an external event. The push button also has a p... | 08/07/2007 |
| 7225712 | Motion detecting system for use in a safety system for power equipment A woodworking machine including a detection system adapted to detect a dangerous condition between a person and a working portion of the machine is disclosed. The machine includes a reaction system associated with the detection system to cause a predetermined action... | 06/05/2007 |
| 7208694 | Capacitance activated switch device A capacitance based switch device employs an electric field imaging device electrically coupled via an electrical conductor to a conductive electrode member that is attached to the door or any other suitable surface. Such electric field imaging device generates a si... | 04/24/2007 |
| 7168502 | Electric power tool with locking mechanism An electric power tool has a motor-driven circular tool that can be clamped by means of a clamping device. A mechanical braking device (2) serves to brake the tool. A safety element (4) prevents improper handling of the electric power tool. In a safety... | 01/30/2007 |
| 7102542 | Apparatus and method for determining output signals according to pressure and depressing time An apparatus and a method for determining output signals according to pressure and depressing time mainly includes a timer, a scanner and a keyboard connecting electronically to the timer and the scanner. The keyboard has a plurality of button keys. When in use, the... | 09/05/2006 |
| 7088337 | Input device for alarming excessive striking force An input device for alarming excessive striking force adopted for use on electronic instruments alerts users when the button keys are being depressed with excessive force, and preventing hand injury. The invention includes a button key structure, a first conductor m... | 08/08/2006 |
| 7053325 | Electric power tool An electric power tool includes a housing, an electric power, a trigger, a trigger-limitation device and a switching device. The housing receives the electric power unit having an output shaft. The trigger is slidably mounted on the housing so as to control operatio... | 05/30/2006 |
| 6833825 | Apparatus for remotely controlling a digital processing system According to one aspect of the invention an apparatus is provided for remotely controlling a digital processing system, comprising a housing, a scrolling detector, a cursor positioning detector, and a transmitter. The housing has a wall having an outer scrolling sur... | 12/21/2004 |
| 6710269 | Foil keyboard with security system The present invention discloses a foil keyboard with a security system for detecting and preventing unauthorized mechanical access to the key contacts. The foil keyboard comprising a foil having for each key an elastic key spring area in which an electrical contact ... | 03/23/2004 |
| 6498312 | Two-pressure switch A press switch comprises an insulating substrate with two conductive zones suitable for triggering first and second functions, respectively. The first zone has at least two portions that are electrically insulated from each other. A spring has two contact... | 12/24/2002 |
| 6466140 | Pedestrian push button assembly A pedestrian push button assembly for activating a signal generator to generate a signal at a street crosswalk. The pedestrian push button assembly has a rigid frame having a piezoelectric material of a solid state switch positioned across a central apert... | 10/15/2002 |
| 6316846 | Cord switch and pressure sensor In order to provide a cord switch which can securely catch the ON/OFF operations, can cancel an erroneous operation by preventing the contact between electrodes caused by bending of the cord switch, and have a positive sensibility for the pressurization i... | 11/13/2001 |
| 5444203 | Safety switch for an industrial machine The invention relates to a safety switch intended to be connected into a safety circuit for an industrial machine, for example an industrial robot. The switch comprises a contact device (2) with a hand-operated device (3, 4) in which a pressure rod (31) i... | 08/22/1995 |
| 5401928 | Safety control for power tool A safety control for power tool includes a trigger responsive element coupled to the power tool drive apparatus. The trigger responsive element is operative to permit normal trigger movement between on and off positions. In addition, the trigger responsiv... | 03/28/1995 |
| 5226904 | Electrosurgical instrument A simple and reliable electrosurgical instrument includes a cable having a main contact wire and first second insulated switch wires all provided with a short insulated or bare portion. The cable is received in a main member having a first holding mechani... | 07/13/1993 |
| 4997999 | Pulse-type switching apparatus and method of operation A miniature ratchet type push button activated electrical switch wherein a first electrical contact is caused to sweep across and briefly contact a second electrical contact upon depression of a push button to transmit an electrical pulse. The rotation is... | 03/05/1991 |
| 4739133 | Electrical switching apparatus An electrical switching device for door actuated operation especially configured for conversion between grounded and non-grounded operation is disclosed. The device includes a housing including a stationary contact and a moveable contact. The moveable con... | 04/19/1988 |
| 4450331 | Key switch assembly having momentary closed interval Key switch assembly comprises a frame having a column in which a plunger is contained. The plunger is biased to an extended position by a spring and is movable to its depressed position. A bell crank is mounted adjacent to the column and has a camming arm... | 05/22/1984 |
| 4122319 | Electrical switch and its use for the control of machines An electrical switch comprising a housing containing a linearly movable spring-loaded control element, n contacts each comprising a fixed element mounted in the housing and a movable element carried by the control element. The contacts are arranged such t... | 10/24/1978 |
