Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7258094 | Engine block component brace One or more component braces may be installed into the upper valley of a V-styled engine block to provide resistance to deformation of the block when used in an operating motor. The component braces include first and second mounting portions separated by a body port... | 08/21/2007 |
| 7246597 | Method and apparatus to operate a homogeneous charge compression-ignition engine A method and apparatus for controlling engine operation to compensate for effects of combustion chamber deposits (CCDs) on combustion in a controlled auto-ignition engine is presented. Control methodologies comprise operation of variable valve actuation, fuel inject... | 07/24/2007 |
| 7178383 | Knock sensor A stacked body constituted by a first insulating sheet, a first terminal plate, a piezoelectric element, a second terminal plate, a second insulating sheet, a weight, and a disk spring is fitted over a cylindrical portion of a base, clamped and held between a nut an... | 02/20/2007 |
| 6659081 | Arrangement for mounting a sparkplug of an internal combustion engine The arrangement for mounting a sparkplug of an internal combustion engine includes mounting the sparkplug so that all of the outside electrodes are arranged at an intake port side area and/or an exhaust port side area. Alternatively, in the case where at ... | 12/09/2003 |
| 6655352 | Integrated bolt two-piece sleeve design for flat response knock sensor A mounting fixture for an engine knock sensor is provided. The fixture includes a base and a support member. The support member is joined to the base with a press fit joint. The base includes an aperture and the support member is inserted in the aperture.... | 12/02/2003 |
| 5960772 | Apparatus and method for knock detection in internal combustion engines The present invention provides a knock sensing system for an internal combustion engine which utilizes only a single knock sensor associated with one of the engine cylinders. Operation of the engine is controlled such that the cylinder which is equipped w... | 10/05/1999 |
| 5505176 | Valve seating noise discriminating system for engine with variable valve operating system A valve seating noise discriminating system discriminates valve seating noises caused by valves of a valve system in an engine from noises caused by knocking. Ignition timing can be prevented from being erroneously retarded due to the valve seating noises... | 04/09/1996 |
| 5404854 | Knock control system for internal combustion engine A knocking vibration detecting unit (1) and a knock deciding unit (c) are integrated, and the communications of a knock intensity between the knock deciding unit (c) and an engine controlling microcomputer (7) are carried out in combination of a change fr... | 04/11/1995 |
| 5136998 | Automotive control unit with internal sensor In applications involving automotive engines and transmissions that are controlled by an electronic controller (13) in response to inputs from a sensor (20), the sensor (e.g., temperature sensor, accellerometer, etc.) is enclosed in the same housing that ... | 08/11/1992 |
| 5131357 | Cylinder block for V-type engine A V-type engine cylinder block includes a mounting pedestal, integrally formed with the block in a V-shaped space between two cylinder banks and interconnecting the cylinder banks. A top wall is secured to the mounting pedestal and extends over almost the... | 07/21/1992 |
| 4969441 | Knocking suppression apparatus for an internal combustion engine A knocking suppression apparatus for a multi-cylinder engine has a knock sensor mounted on a bracket which is secured to the engine in at least two locations. Engine vibrations are transmitted from the engine to the knock sensor by the bracket. The knock ... | 11/13/1990 |
| 4903646 | V-type cylinder block of internal combustion engine A V-type cylinder block of internal combustion engine is disclosed, which provides two angularly disposed cylinder banks each having a cylinder row of cylinders. A plurality of ribs rise generally from head bolt hole portions defined between two cylinders... | 02/27/1990 |
| 4667637 | Gated knock detector for internal-combustion engines A system for use with an internal combustion engine which reduces, or eliminates, engine knock and attendant engine damage. An audio transducer is placed on an engine cylinder to convert audio signals occurring within the combustion chamber into an electr... | 05/26/1987 |
| 4598681 | Automotive engine with knock sensor An automotive internal combustion engine comprises a cylinder block having at its bottom part with a plurality of main bearings, a bearing beam structure secured to the bottom part of the cylinder block and including a plurality of main bearing cap sectio... | 07/08/1986 |
| 4562813 | Knock control system A knock control system which includes a knock control unit constructed of a transducer portion for detecting vibrations of an engine and converting the detected vibrations into an electric signal, and a knock signal processing unit for delivering a signal... | 01/07/1986 |
| 4517945 | Engine vibration transmission structure A structure for use in an internal combustion engine including a cooling passage between an engine block outer wall and cylinder walls each defining therein a cylinder. The engine block outer wall has a thickened portion with connection arms extending to ... | 05/21/1985 |
| 4475508 | Automotive engine cylinder block A cylinder block of an automotive engine comprises a cylinder wall section defining an engine cylinder and connected to a cylinder block skirt section. A water jacket outer wall section is connected to the cylinder wall section and located separate from t... | 10/09/1984 |