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81. 发明专利

GB2003998B ELASTIC POSITIVE DRIVE BELLOWS SEAL 未知
公开(公告)号：GB2003998B
公开(公告)日：1982-07-14
申请号：GB7834354
申请日：1978-08-23
申请人： CRANE PACKING CO
IPC分类号： F16J15/36
摘要： This specification discloses a mechanical bellows seal in which torsional forces acting upon the bellows unit are opposed and minimized by a circumferential biasing device. Through appropriate structure, the biasing means constrains the opposite ends of the bellows for joint rotation, minimizing vibrational forces and slip-stick phenomenon of such seals in highly viscous fluid sealing environments.

82. 发明专利

GB2007334A Ball valves 未知
公开(公告)号：GB2007334A
公开(公告)日：1979-05-16
申请号：GB7840955
申请日：1978-10-18
申请人： CRANE PACKING CO
IPC分类号： F16K5/06
摘要： This application discloses a sealing seat for a ball valve 10. Within a housing 12 is an apertured ball 29 which is rotatable between positions for permitting or precluding flow. The seats include a retainer 30 formed of soft metal having a projection 36 positioned to engage the ball 20 when fluid pressure acts thereon and to give structural integrity to an annular sealing member 42 formed of expanded graphite particles. This annular sealing member 42 also provides lubricity to the retainer 30 in the form of graphite particles transferred to the retainer 30 upon rotation of the ball 20 to minimize galling of the ball 20. In a modification, Fig. 5, (not shown), the projection 36 is provided with an annular groove to help retain the sealing member 42 which has metal screen wires embedded therein.

83. 发明专利

GB2003998A ELASTIC POSITIVE DRIVE BELLOWS SEAL 未知
公开(公告)号：GB2003998A
公开(公告)日：1979-03-21
申请号：GB7834354
申请日：1978-08-23
申请人： CRANE PACKING CO
IPC分类号： F16J15/36
摘要： This specification discloses a mechanical bellows seal in which torsional forces acting upon the bellows unit are opposed and minimized by a circumferential biasing device. Through appropriate structure, the biasing means constrains the opposite ends of the bellows for joint rotation, minimizing vibrational forces and slip-stick phenomenon of such seals in highly viscous fluid sealing environments.

84. 发明专利

GB1518566A ROTARY END FACE SEAL 未知
公开(公告)号：GB1518566A
公开(公告)日：1978-07-19
申请号：GB4668076
申请日：1976-11-09
申请人： CRANE PACKING CO
IPC分类号： F16J15/34
摘要： 1518566 Seals CRANE PACKING CO 9 Nov 1976 [2 Jan 1976] 46680/76 Heading F2B A rotary end face seal comprises relatively rotatable seal rings 14, 17 having radially contacting sealing surfaces 16, 29 respectively, the ring 17 being located and held against rotation relative to a gland plate 19 and being axially supported in the gland plate 19 with limited contact via a land 33 located at the radially outer region of the ring 17, the design of the seal rings 14, 17 being such that the centroid 31 of an axial section through the ring 17 is located radially inward of the land 33 so that sealing pressures on the contacting surfaces 16, 21 provide a clockwise turning moment about centroid 31 as shown, whilst the centroid 30 of an axial section through the ring 14 is located such that fluid pressures on selected portions of the ring will develop counterclockwise turning moments of force about the centroid of the ring 14. The arrangement is such that the combined effect of each ring 14, 17 tending to twist about its centroid 31, 30 will pinch off face leakage at the outer diameter of the sealing faces 16, 29 and also counteract distortion of the faces 16, 29 caused by pressure and temperature gradients across the surfaces thereof whereby the necessary sealing flatness of the faces 16, 29 is preserved. To achieve the above results, two further conditions are also required. (1) The ratio of the radial sealing faces width to the inner radius of the faces must be in the range of 0À085 to 0À30, and (2) hydro-pads, in the form of lubricant recesses 28, must be provided, and as shown are arranged around the periphery of the seal face 16. The ring 14 is of carbon.

85. 发明专利

CA1019787A BULKHEAD SEAL 未知
公开(公告)号：CA1019787A
公开(公告)日：1977-10-25
申请号：CA241467
申请日：1975-12-10
申请人： CRANE PACKING CO
发明人： MITRANI JOSEPH W
IPC分类号： B63H23/32 , F16J15/00 , F16J15/54
摘要： A segmented packing for a ship's propeller shaft at a bulkhead in the ship's hold to prevent water in one ship's compartment from passing through the propeller shaft opening in a bulkhead to an adjacent compartment. The seal is normally held out of contact with the propeller shaft by equally spaced pins. The pins have grooves into which the seal segments are forced by encircling garter springs when the pins are normally pushed axially to apply the packing. The pins can be pushed from either side of the bulkhead so that the operator need not enter the flooded compartment to make the packing effective. The packing can be cocked again after use by operating a threaded jack for each segment and then retracting the pins to their initial position in which the packing is held out of contact with the shaft.

86. 发明专利

DE2640687A1 未知
公开(公告)号：DE2640687A1
公开(公告)日：1977-06-08
申请号：DE2640687
申请日：1976-09-07
申请人： CRANE PACKING CO
发明人： ZOBENS ARTHUR
IPC分类号： F16J15/16 , F16J15/34 , F16J15/38
摘要： A mechanical face seal for application in high pressure sealing environments having a carbon sealing ring in sliding sealing contact with a sealing ring of dissimilar material. The carbon ring is supported on a rigid backing ring. A barrier is provided in overlying relation to the outer circumferential surface of the carbon ring to separate the outer circumferential surface from exposure to the pressure exerted by the sealed fluid.

87. 发明专利

GB1466733A HIGH PRESSURE LIP SEAL 未知
公开(公告)号：GB1466733A
公开(公告)日：1977-03-09
申请号：GB1753974
申请日：1974-04-22
申请人： CRANE PACKING CO
IPC分类号： F16J15/32
摘要： 1466733 Shaft seals CRANE PACKING CO 22 April 1974 17539/74 Heading F2B In order to maintain knife-edge sealing contact between ring 15 and shaft (12), however great the fluid pressure, surface 24 is sloped to provide a force to balance that which the fluid pressure exerts on surface 22. Ring 15 may be of elastomeric material or P.T.F.E. Grease consisting of powdered P.T.F.E. and a silicone is carried in groove 26.

88. 发明专利

FR2197333A5 未知
公开(公告)号：FR2197333A5
公开(公告)日：1974-03-22
申请号：FR7330775
申请日：1973-08-24
申请人： CRANE PACKING CO
IPC分类号： B24B41/06 , B24B47/00
摘要： Disclosed is an apparatus for handling workpieces to be polished on a rotatable disc type of polishing machine and comprising a workholder mounted on an arm oscillatable in a vertical plane through substantially 180 DEG so that in one position the workholder is inverted to facilitate loading and unloading thereof, and in another position the workholder supports the workpieces by differential pressure thereon over the polishing disc. The movement of the arm may be arrested as the workpieces touch the polishing disc, and an air cylinder on the arm moves the workholder against the disc and presses the workholder against the disc with a higher pressure than is permissible with wax-adhered workpieces. At the termination of the polishing operation the workholder is raised from the polishing disc and the arm is rotated to invert the workholder, after which a cleaning spray is automatically applied to the workpieces.

89. 发明专利

GB1244142A A ROTARY MECHANICAL SEAL 未知
公开(公告)号：GB1244142A
公开(公告)日：1971-08-25
申请号：GB544170
申请日：1970-02-04
申请人： CRANE PACKING CO
IPC分类号： F16J15/34
摘要： 1,244,142. Rotary shaft seals. CRANE PACKING CO. 4 Feb., 1970 [17 Feb., 1969], No. 5441/70. Heading F2B. A vertically disposed rotary shaft 11 is sealed where it extends through an opening 12 in a pressurized housing 10 by means comprising a rotary mechanical seal 29 and a supply of lubricant for the seal comprising upper and lower reservoirs 50 and 52 located respectively above and below the seal contact faces, the bottoms of the reservoirs being interconnected and the top of the lower reservoir 52 communicating with the interior of the housing 10. The seal 29 is housed with radial clearance in a recess 17 in a casting 13 secured to the housing 10 and comprises a rotatable sealing washer 34 which is slidably mounted on a sleeve 36 secured to the shaft 11 and urged by springs 49 into facial sealing contact with a stationary seating washer 30 sealed to an end plate 19 by an 0-ring 31. An annular space 16 is provided between the shaft and the casting 13 so that the lubricant is pressurized by the fluid in the housing 10. A filler plug 54 is fitted in the plate 19 and the washer 30 forms with the plate 19 and sleeve 36, a chamber 58 in which oil leakage past the contact faces 32, 33 of the seal is collected and drained through a tube 60 to a measuring vessel 61.

90. 发明专利

GB896176A Sealing device 未知
公开(公告)号：GB896176A
公开(公告)日：1962-05-09
申请号：GB3729060
申请日：1960-10-31
申请人： CRANE PACKING CO
IPC分类号： F16J15/38
摘要： 896,176. Stuffing-box substitutes; jointmaking packing. CRANE PACKING CO. Oct. 31, 1960 [Nov. 20, 1959], No. 37290/60. Classes 122 (3) and 122 (5). A ring 27 having an outwardly-tapered inner end surface 29 is sealed to a cylindrical surface, e.g. of a sleeve 14 secured to a shaft 12, by a deformable ring 28, e.g. of P.T.F.E., of substantially triangular cross-section wedged between the surfaces 14, 29 and having circumferential grooves 36, 37 formed in two of its surfaces, the walls of one of the grooves being spread apart by rigid means, such as a ring 40 of metal or thermosetting plastic, wedged into the groove so that one of the walls thereof is urged against the cylindrical surface. The ring 27 forms a rotary seal with a ring 16 held in a closure-plate 13 secured to a housing 10 in which the shaft 12 rotates. The ring 28 is urged axially by a plurality of helical springs 33 which are located in recesses in a retainer 30 mounted on the shaft and which press against a washer 35 in bearing engagement with the ring 40.

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