GB841902A - Improved sealing assembly - Google Patents
Improved sealing assemblyInfo
- Publication number
- GB841902A GB841902A GB30291/57A GB3029157A GB841902A GB 841902 A GB841902 A GB 841902A GB 30291/57 A GB30291/57 A GB 30291/57A GB 3029157 A GB3029157 A GB 3029157A GB 841902 A GB841902 A GB 841902A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- groove
- packing
- piston
- packing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/166—Sealings between relatively-moving surfaces with means to prevent the extrusion of the packing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Sealing Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
841,902. Piston packing; joint-making packing. PARKER-HANNIFIN CORPORATION. Sept. 27, 1957 [Sept. 28, 1956], No. 30291/57. Classes 122 (1) and 122 (3). Sealing means between cylindrical inner and outer members 10, 21, Fig. 2, comprises a resilient packing ring 17 mounted in a groove 11 in one member (the inner 10, as shown) and a continuous back-up ring 22 of a relatively harder material than the ring 17 mounted in a stepped recess 15 formed at one side of the groove 11. As shown in Fig. 2, applied to a piston 10, the packing ring 17, which may be of rubber, is a close fit between the walls 12, 14 of the groove 11 and has an inside diameter which, when the ring is initially assembled, may or may not contact the bottom 18 of the groove since, under pressure, sealing contact is provided between the ring and the wall 14. The back-up ring, which prevents extrusion of the packing ring, may be made of " Teflon " (Registered Trade Mark) and has an inside diameter at least equal to the mean diameter of the packing ring 17 so that, on assembly, a part of the ring may be passed over the flanged end 24 of the piston into the groove 11, thereby allowing the remainder to clear the flange and thus permit the fitting of the ring on to the step. Any undue twisting of the packing ring within the groove 11 during reciprocation of the piston is prevented by providing in the bottom of the groove recesses 26, 27 into which the ring may be deformed. As shown in Fig. 5, a packing ring 32 and back-up ring 33 are mounted in the closure ring 31 of an hydraulic cylinder 30 or, alternatively, both rings may be mounted within the cylinder wall and cooperate with an internal closure plug.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US841902XA | 1956-09-28 | 1956-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB841902A true GB841902A (en) | 1960-07-20 |
Family
ID=22183398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30291/57A Expired GB841902A (en) | 1956-09-28 | 1957-09-27 | Improved sealing assembly |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB841902A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2535816A1 (en) * | 1982-11-05 | 1984-05-11 | Teves Gmbh Alfred | SEALING ARRANGEMENT FOR THE PASSAGE OF A ROD HAVING A RECTANGULAR SECTION SEAL RING |
CN108775416A (en) * | 2018-07-19 | 2018-11-09 | 唐工阀门集团有限公司 | A kind of ball valve with valve body self-sealing mechanism |
-
1957
- 1957-09-27 GB GB30291/57A patent/GB841902A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2535816A1 (en) * | 1982-11-05 | 1984-05-11 | Teves Gmbh Alfred | SEALING ARRANGEMENT FOR THE PASSAGE OF A ROD HAVING A RECTANGULAR SECTION SEAL RING |
GB2129885A (en) * | 1982-11-05 | 1984-05-23 | Teves Gmbh Alfred | Sealing assembly for a rod duct |
CN108775416A (en) * | 2018-07-19 | 2018-11-09 | 唐工阀门集团有限公司 | A kind of ball valve with valve body self-sealing mechanism |
CN108775416B (en) * | 2018-07-19 | 2024-03-19 | 唐工阀门集团有限公司 | Ball valve with valve body self-sealing mechanism |
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