| Patent application number | Description | Published |
|---|
| 20090085300 | Mechanical Seal Device - A mechanical seal having a seal cover capable of being installed on the outer surface around the circumferential surface of a hole of a seal housing and having an inner circumferential surface surrounding a shaft; a bellows having a first installation portion and a second installation portion, the first installation portion being formed by sealingly fitting the inner circumferential surface of the seal cover to one end circumferential surface of the bellows, the seconds installation portion being at the other end circumferential surface of the bellows, the first installation portion and the second installation portion forming a tubular portion between the portions, the tubular portion being formed as an elastic means surrounding the shaft; a stationary sealing ring sealingly installed on the circumferential surface of the second installation/portion and having an annular sealing surface pressed by the elastic means of the bellows; a rotating sealing ring having an annular relative sealing surface facing the sealing surface of the stationary sealing ring and slidably in intimate contact with the sealing surface of the stationary sealing ring, and a seal collar sealingly fitted and joined in the rotating sealing ring and also sealingly fitted on the shaft. | 04-02-2009 |
| 20090174149 | MECHANICAL SEAL DEVICE - A mechanical seal device which is reduced in friction when seal surfaces slide on each other, prevented from abrasion on seal surfaces, is prevented from abnormal abrasion on the seal surface of a sealing ring and joining split surfaces, is prevented from seizure or squeal phenomena on seal surfaces when seal surfaces are abrasion-rotated and kept in a dry-friction state, is simplified in structure thereof, and is easier to assemble and disassemble. The mechanical seal device is a split type mechanical seal device that seals fluid to be sealed by being mounted to a surface outside a machine between a hole in a housing and a rotary shaft inserted into the hole, and comprises a split stationary sealing rig mounted and fixed to the rotary shaft by embracing it from the opposite sides, and a split rotating sealing ring fixed to the rotary shaft by embracing it from the opposite sides, wherein a clearance through which to permit fluid to be sealed to flow is provided between the inner peripheral surface of the split stationary sealing ring and the rotary shaft, and a rubber or resin sealing layer is provided on at least one of the seal surface of the split stationary sealing ring and the opposing seal surface of the split rotating sealing ring. | 07-09-2009 |
| 20090302546 | Mechanical seal device - A mechanical seal device has a stationary seal ring having a seal surface; a rotating seal ring having a facing seal section capable of being in intimate contact with the seal surface while facing it; a fixation section for sealingly holding the rotating seal ring and sealingly held by a rotating shaft; a seal part placed more on the machine exterior side than a mechanical seal and sealing between a seal cover and the rotating shaft; and a fluid chamber for containing lubrication liquid and formed between an intimate-contact surface, which is between the seal surface and the facing seal surface, and the seal part. The fluid chamber side of the seal surface or of the facing seal surface is formed in a lubrication region surface and the machine interior side is formed in a self-lubrication region surface. The mechanical seal device further has, in the lubrication region surface, an introduction opening for introducing the lubrication liquid, and an annular bloking groove formed in the self-lubrication region and blocking the lubrication liquid from the lubrication region surface. | 12-10-2009 |
| 20100117303 | MECHANICAL SEAL DEVICE - A mechanical seal device comprises an attachment component ( | 05-13-2010 |
| 20110018255 | ROTARY JOINT - The present invention provides a rotary joint which is available to maintain a cryogenic supplying refrigerant which flows in a fluid passage by a vacuum thermal insulation so that a cooling portion is cooled certainly. The rotary joint of the present invention comprises a vacuum use cylindrical shaft ( | 01-27-2011 |
| 20110031744 | ROTARY JOINT - A rotary joint of the present invention maintains cryogenic temperature of a supplying refrigerant flowing through a fluid passage, and makes available to lubricate a seal face by the supplying refrigerant as well as to minimize a running cost for the refrigerant. The rotary joint of the present invention is that, in a mechanical seal device ( | 02-10-2011 |
| 20110049870 | ROTARY JOINT - A rotary joint having a stationary section ( | 03-03-2011 |
| 20110198813 | MECHANICAL SEAL - A mechanical seal of an “outside type” for sealing a sealed fluid that may leak from an inside periphery of a sliding face towards an outside periphery is provided. The seal includes a rotating-side sealing element and a stationary-side sealing element disposed so as to be situated externally with respect to a stuffing box. The stationary-side sealing element, which accommodates a spring, is installed on a seal cover that is secured to the housing. The rotating-side sealing element is installed on a collar that is installed directly on the rotating shaft. The rotating side, which comprises the rotating-side sealing element and the collar, is positioned such that rotation takes place in the atmosphere on a machine-exterior side. A balance ratio A2/A1 is 1 or less, A1 being an axial-direction projection area of the sliding face of the stationary-side sealing element and A2 being an axial-direction projection area that is subjected to a seal fluid pressure acting as a motive force in the axial direction relative to the stationary-side sealing element. An annular cooling jacket is disposed between an inside periphery of the housing and an outside periphery of the rotating shaft. | 08-18-2011 |
