Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 7341256 | Seal ring A seal ring which maintains a stable sealing performance over a long term is provided. In a first seal portion, linear contact portions which come into linear contact with the sidewall surface of an annular groove on the unsealed fluid side are continuously extended... | 03/11/2008 |
| 6726220 | Dual seal assembly A dual seal assembly for providing a seal between a reciprocating rod and the gland is described. The dual seal includes first and second axially adjacent annular seal elements. The first seal element is constructed of a material having a different hardness than the... | 04/27/2004 |
| 6715767 | Angled gap compression rings with end relief An engine piston compression ring designed to reduce the negative effects of ring end butting and reduce blowby. The compression ring has a gap forming an angle with a longitudinal axis of the ring or with a radius drawn from the axis. A relieved portion is provided... | 04/06/2004 |
| 6517081 | Machinery seal A seal assembly for a groove or seal gland in a relatively displaceable machine part for sealing an axial machine part extending therethrough comprises a pair of annular seal elements and a support element disposed between the annular elements and radiall... | 02/11/2003 |
| 6386548 | Dual seal assembly A dual seal assembly for providing a seal between a reciprocating rod and the gland is described. The dual seal includes first and second axially adjacent annular seal elements. The first seal element is constructed of a material having a different hardne... | 05/14/2002 |
| 6340161 | Machinery seal A seal assembly 20 for a groove 12 or seal gland in a relatively displaceable machine part 10 for sealing an axial machine part 18 extending therethrough comprises a pair of annular seal elements 30 and a support element 50 disposed between the annular el... | 01/22/2002 |
| 5603512 | Side and gap sealed oil ring An oil control ring assembly having a sealing ring and a scraping is disposed within a groove in a piston. The scraping ring assembly has a scraping end portion and spaced apart ends defining a gap. The sealing ring has a sealing end portion and mated spa... | 02/18/1997 |
| 5564699 | Side and gap sealed oil ring An oil control ring assembly having a sealing ring and a scraping is disposed within a groove in a piston. The scraping ring assembly has a scraping end portion and spaced apart ends defining a gap. The sealing ring has a sealing end portion and mated spa... | 10/15/1996 |
| 5087057 | Helical cut seal A ring seal has a radial cut, so that the ring seal may be transversely installed over a coaxial element. The cut extends radially and circumferentially to provide cut surfaces that overlap in intimate contact and maintain intimate contact to inhibit leak... | 02/11/1992 |
| 4844487 | Lock-step duo step split sealing ring A split sealing ring has a latch structure of overlapping, interengaging surfaces inclined to the ring's axis, which inclined surfaces seat against each other and intersect only the outer circumferential face of the ring and one of the axial faces of the ... | 07/04/1989 |
| 4758005 | Piston rings with a gap seal A process for manufacturing a piston ring includes the step of forming a gap seal from an elongated member on one side and an "L-shape" on the other side; compressing the ring to close the gap seal and move the two ends into a nesting position; welding a ... | 07/19/1988 |
| 4576381 | Spiral piston ring with tapered ends and recesses A spiral piston ring made of self-lubricating material and having at least two complete convolutions and having a gradual and continuous taper except for the terminal portions thereof which taper at a steeper angle than the gradual and continuous taper, a... | 03/18/1986 |
| 4256318 | Piston ring A parted annular piston ring having an outer periphery for engaging a cylinder wall of an internal combustion engine. A band of hard, wear-resistant material is secured in a groove which extends circumferentially completely around the outer periphery. The... | 03/17/1981 |
| 3949997 | Piston ring structure A unitary spiral ring structure is fabricated from side-by-side split ring members with one end of one ring joined in overlapping relation to one end of the other ring by means of a silver soldered or other fused metal joint. The mating ends of each ring ... | 04/13/1976 |
