Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7146724 | Method of Assembling an internal combustion engine This invention provides a method of assembling a modular internal combustion engine. The modular engine includes a cast crankcase having an open top and a closed bottom, a mid-plate, and an extruded cylinder bore block. A pre-assembled crankshaft with bearings, conn... | 12/12/2006 |
| 7047619 | Seal installation tool and method A tool and method is provided for the installation of radial seals such as for example O-rings into radial grooves. The tool and method can be used to install an O-ring into a dovetailed groove of an items such as a valve stem. The tool includes a first part having ... | 05/23/2006 |
| 6789313 | Piston pin lock ring insertion tool and method A piston-pin lock-ring-insertion tool has a ring-insertion tube (1) in ring-insertion relationship to a ring pusher (2). The ring-insertion tube has an inside periphery with a press-close taper (8) that is tapered inwardly from a ring-feeder end... | 09/14/2004 |
| 6687993 | Method for fitting a cylinder assembly into a cylinder housing A method for fitting a cylinder assembly into an internal combustion cylinder housing includes the steps of gripping the connected rod-pin-piston assembly with a gripper or clamp and lowering the connected rod-pin-piston assembly, gripped by the gripper o... | 02/10/2004 |
| 6658713 | Semi-automatic engine piston assembly tool An assembly tool for insertion of engine piston/rod assemblies into an engine cylinder includes a frame, a support arm pivotally carried on the frame, an insertion cylinder carried by the support arm and including an extendable insertion rod having an end... | 12/09/2003 |
| 6591484 | Internal combustion engine piston insertion machine A piston insertion machine for inserting piston assemblies into respective cylinders of an internal combustion engine. The piston insertion machine eliminates the need for individually lifting and inserting the piston assemblies into the respective cylind... | 07/15/2003 |
| 6516511 | Position sensor for piston ring compressor A piston ring compressor having position sensors for aligning a piston assembly with a cylinder of an engine block. The position sensors enable a piston assembly to be properly aligned with the cylinder prior to inserting the piston assembly into the cyli... | 02/11/2003 |
| 6427301 | Piston ring compressor tool system The piston ring compressor tool system comprises a compression skirt. The skirt has an interior surface and an exterior surface. It also has an upper edge and a lower edge. The tool system has a hollow, generally tapered, cylindrical tubular form and is f... | 08/06/2002 |
| 6389667 | Piston ring compressor A piston ring compressor for compressing a piston ring about a circumference of a piston so that the piston can be inserted into a cylinder. The piston ring compressor includes a wall forming a hollow shaped member and an inner compression surface formed ... | 05/21/2002 |
| 6108883 | Retaining ring removal tool A tool to remove a retaining ring at least partially received in a groove of a cylinder has a handle lever constructed to engage the open end of the cylinder and a claw lever having a hooked end or claw constructed to be received at least partially undern... | 08/29/2000 |
| 5974644 | Bicycle pedal crank dismounting tool A tool for dismounting a bicycle pedal crankarm from a crankshaft. A bicycle crankshaft has a mounting end and the crankarm has a crank mount having a bore therethrough having on one end a socket mounted on the crankshaft mounting end. The tool includes a... | 11/02/1999 |
| 5435056 | Piston ring apparatus Piston-ringing apparatus comprises a tubular piston nest member for receiving each piston to locate the piston groove in a predetermined ring-receiving position, a plurality of ring cartridges positionable one at a time in alignment with the piston nest m... | 07/25/1995 |
| 4862777 | Method and apparatus for forming surfaces on piston rings Apparatus is described for machining the exterior peripheral surface of piston rings for internal combustion engines, particularly piston rings having a transverse shape other than circular, for example, oval or elliptical. A jig arrangement usable with t... | 09/05/1989 |
| 4495690 | O-ring placement tool A tool is provided for seating "O" rings in flanged pipe. An "O" ring positioning plate is held between two parallel facing plates. A flexible "O" ring support band is mounted in the tool and holds the "O" ring tightly against an arcuate cut in the lower ... | 01/29/1985 |
| 4495689 | Tool for placement of O-rings and method A tool is provided for positioning an "O" ring in a seating groove cut into the face of a section of flanged pipe. The tool includes a set of two adjustable tongs to grasp the "O" ring. The tongs are held in a fixed position by a pair of parallel facing p... | 01/29/1985 |
| 4125043 | Device for the centered clamping of annular workpieces for internal machining A device for the centered clamping of an annular workpiece or workpiece stack formed of a plurality of annular workpieces, to hold the same in position for the machining of the inner faces thereof, includes first and second axially aligned clamping rings ... | 11/14/1978 |
| 4042259 | Suspension strut assemblies for motor vehicle suspensions A suspension strut assembly for a motor vehicle suspension including a telescopic damper which is connected at its ends to a wheel carrier and to part of the vehicle superstructure, and a wheel suspension spring which surrounds the damper and is seated at... | 08/16/1977 |
