Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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 |
| 7797852 | Support devices and kits for piston rings A support device for a piston ring comprising a circular support defining a bore having an interior support surface to provide circumferential support to a piston ring. Also disclosed is a kit comprising a plurality of circular supports. ... | 09/21/2010 |
| 7263781 | Position-measuring device for fluidic cylinder-and-piston arrangements A position-measuring device for fluidic cylinder-and-piston arrangements having at least one Hall sensor, preferably arranged in the area of the cylinder wall, especially in a cylinder wall, and a magnetic region, arranged in the piston. At least one Hall sensor arr... | 09/04/2007 |
| 7231724 | Nozzle seal slot measuring tool and method A tool for measuring seal slot position includes a tool shaft having a longitudinal axis, a pin eccentrically disposed at one end of the tool shaft relative to the longitudinal axis, and a disk member disposed at an opposite end of the tool shaft that facilitates ro... | 06/19/2007 |
| 7143522 | Drop-in bore gauge apparatus for female articulated connector An apparatus for measuring wear and specified dimensions and aiding in the method of reconditioning of articulated connectors is disclosed. The apparatus is a drop-in bore gauge with a handle, a flange and at least one elongated fin for insertion into the bore of th... | 12/05/2006 |
| 7122989 | Multiple speed mover assembly A mover assembly (16) that moves or positions an object (12) includes a mover output (226), an actuator (230), and a control system (18). The mover output (226) is connected to the object (12), and the actuator (23... | 10/17/2006 |
| 7096553 | Piston ring sizing device A device (10) adapted to position a ring (R) in the bore (B) of a cylinder (C) so that the ring (R) is perpendicular to the axis of the cylinder (C) includes a first segment (11) and a second segment (12). The first segment (11) has a ton... | 08/29/2006 |
| 7096593 | Angle-measurement device An angle-measurement device comprising a carrier element with at least two tracers. At least one tracer is configured as an annular surface, and at least one tracer is configured as a cylindrical surface. Each tracer has essentially coinciding periodic patterns that... | 08/29/2006 |
| 7024273 | Probe driving mechanism for displacement measuring apparatuses A probe driving mechanism for displacement measuring apparatuses, capable of carrying out a stable, constant speed probe feeding operation without additionally providing a motor rotation detecting rotary encoder and a tachometer generator. When an output from a scal... | 04/04/2006 |
| 6643946 | Bearing clearance detector An operating apparatus and method for a bearing clearance detector. The apparatus is arranged such that an air pressure and vacuum may be applied to a probe inserted into the cylinder of an engine. The operator may apply the vacuum in incremented steps wh... | 11/11/2003 |
| 6619091 | Quick-change system for measuring probe assembly On a hard-rolling machine (41) for crankshafts (1) there is provided a plurality of measuring probes (4) corresponding to the number of main bearings (3) to be measured, which are arranged on a measuring-probe bridge (6) with the mutual spacing (5). The m... | 09/16/2003 |
| 6421930 | Piston ring locating system A piston ring locating system includes a resilient ring fabricated in a generally circular configuration having a short height and a length of between about 2 inches and 5 inches with overlapping free ends. One of the ends has a slight bend there adjacent... | 07/23/2002 |
| 6196063 | Method and apparatus for measuring piston ring tension An apparatus for measuring tension of piston rings includes a cylindrical support fixture having a circumferential groove formed therearound for receiving and holding a piston ring. A rigid base supports a plurality of components of the apparatus. A stron... | 03/06/2001 |
| 6003238 | Method for facilitating the installation of an axially adjustable driveshaft assembly in a vehicle A method for pre-positioning the driveshaft sections of an axially adjustable driveshaft assembly prior to installation within a vehicle to facilitate the installation process. An installation tool is provided with first and second members which are movab... | 12/21/1999 |
| 5979071 | Piston ring gap measuring device for a vehicle A piston ring gap measuring device for a vehicle includes a master bore having a guide slit on one side and a thickness gauge on the other side. A tolerance scale is provided adjacent to the guide slit and corresponds to tolerance thicknesses of the thick... | 11/09/1999 |
| 5814724 | Method and device for determining piston engine wear A device and a method for determining big end bearing and wrist pin bearing wear in a piston engine without complete disassembly of the engine. The device includes a probe rod which moves in response to the movements of the piston in a cylinder being test... | 09/29/1998 |
| 5744705 | Method and apparatus for engine testing The invention relates to a method of, and apparatus for, determining the clearance between wear surfaces of a reciprocating piston engine and the surrounding cylindrical bore of the engine block, without need for physical contact with the piston. As parti... | 04/28/1998 |
| 5675076 | Device for measuring cylinder deformations in piston-type internal-combustion engines A piston-type internal combustion engine includes an engine cylinder; a piston slidably received in the engine cylinder; and a device, carried by the piston, for measuring deformations in the cylinder wall. The piston has at least two radial bores. The me... | 10/07/1997 |
| 5542188 | Measuring apparatus for checking the dimensions of cylindrical workpieces A measuring apparatus checks crankshafts 6 and has a rotatable workpiece holder (4, 5), a first group of bifurcated measuring devices (12a, 12b, 12c, 12d) for measuring the main bearings of the crankshaft and a second group of bifurcated measuring devices... | 08/06/1996 |
| 5123173 | Apparatus for checking features of parts Checking apparatus comprising a support (1); sensing means (19; 71) adapted to provide signals depending on the features of the checked parts (3) with reference means (41, 42; 70) adapted to cooperate with the parts; and connection means (30; 66; 93) with... | 06/23/1992 |
| 5113592 | Master part and relevant manufacturing process A reference master part for linear dimensions and/or geometrical and/or shape features of determined workpieces (30) comprises precision-machined surfaces having mutual spatial arrangements such as to provide known references for said dimensions, etc. For... | 05/19/1992 |
| 5038449 | Piston ring end gap tool A tool for use in checking and filing the end gap of piston rings. The tool includes a cylindrical member having a shoulder adjacent one end thereof which will receive and seat a piston ring and position it at a predetermined depth below the deck of a bor... | 08/13/1991 |
| 4928400 | Bearing clearance detector A relatively simple device for measuring such variables as piston wrist pin and connecting rod big end clearances in internal combustion engines includes a cylindrical casing with a threaded front end for mounting in a spark plug hole; an elongated, arcua... | 05/29/1990 |
| 4570334 | Apparatus for adjusting the valve control of a reciprocating piston internal combustion engine An apparatus for the adjustment of the valve control of a reciprocating piston internal combustion engine with a cam shaft driven from the crankshaft by an endless, flexible transmission member, in which the cam shaft and a valve control adjustment device... | 02/18/1986 |
| 4521863 | Gauge for checking the clearance existing between the cams of a camshaft and the relevant valves A gauge for measuring the clearance between a cam of an engine camshaft and the relevant valve, during rotation of the camshaft, comprises a first movable feeler element, for contacting the cam profile, and a second movable feeler element, for contacting ... | 06/04/1985 |
| 4473950 | Crankshaft alignment tool A remote reading crankshaft alignment tool utilizes a differential transformer and live centers to measure the deflection of crankshaft webs as a function of crankshaft angle. The tool is positioned between adjacent webs to measure the difference in spaci... | 10/02/1984 |
| 4451186 | Tool for use in line boring of diesel engine blocks A tool for use in the line boring of diesel engine cylinder blocks. The tool includes a mounting pad having a pair of holes for fitting over dowel pins projecting from the end of the cylinder block. A central opening of the pad is then centered in alignme... | 05/29/1984 |
| 4397119 | Adjustable crankpin locators for a crankshaft grinding machine A pair of adjustable crankpin locators (40,100) for use on a crankshaft grinding machine (20) is disclosed. The adjustable crankpin locators (40,100) permit a size range of crankshafts (78) to properly be located in the grinding machine (20). One locator ... | 08/09/1983 |
| 4393693 | Apparatus and method for detecting crank shaft orientation and valve assembly in an internal combustion engine The positions of selected valves are determined by measurement of their respective retainers by means of displacement gauges. When a given piston is at top dead center in the compression stroke, the retainers of the intake and exhaust valves of that pisto... | 07/19/1983 |
