GB929528A - An improved piston packing for hydraulic pit props - Google Patents
An improved piston packing for hydraulic pit propsInfo
- Publication number
- GB929528A GB929528A GB2792861A GB2792861A GB929528A GB 929528 A GB929528 A GB 929528A GB 2792861 A GB2792861 A GB 2792861A GB 2792861 A GB2792861 A GB 2792861A GB 929528 A GB929528 A GB 929528A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- piston
- packing
- aug
- engaging
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- 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)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
929,528. Piston packing. RHEINSTAHI. WANKEIM G.m.b.H. Aug. 1, 1961 [Aug. 13, 1960], No. 27928/61. Class 122 (1). In a sealing arrangement between the piston 2 and the cylinder 1 of an hydraulic pit prop extension of the grooved piston packing ring 6 is prevented by a wedge-shaped supporting ring 11 of elastically deformable material, such as a polyamide resin, e.g. nylon, which bears against the cylinder wall and is arranged on that face of the ring not exposed to fluid pressure and a shoulder 4 of the piston. The packing ring 6 is mounted in a recess in the piston 2 and is retained by a flange 9 or by a ring engaging in the groove 16. The ring 11 which is slightly compressed radially abuts against inclined and plane surfaces on the ring 6 and piston 2 respectively and may extend over the whole width of the ring 6. In modifications, the inclined and plane surfaces are formed respectively on the piston and on the ring 6 or the ring 11 has an equilateral triangular crosssection engaging inclined surfaces on both the piston and the ring 6. In a further modification, Fig. 4, the bearing surface 25 of the ring 23 is inclined to the adjoining piston surface providing a gap 24 when the prop is unloaded.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER0028549 | 1960-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB929528A true GB929528A (en) | 1963-06-26 |
Family
ID=7402769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2792861A Expired GB929528A (en) | 1960-08-13 | 1961-08-01 | An improved piston packing for hydraulic pit props |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB929528A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3393917A (en) * | 1965-10-23 | 1968-07-23 | Menasco Mfg Company | Fluid seal |
| EP0015144A1 (en) * | 1979-02-22 | 1980-09-03 | Weatherford/Dmc | Piston and seal in a mud pump or the like |
| US4262915A (en) | 1978-04-17 | 1981-04-21 | Commercial Shearing, Inc. | Low friction drag seals |
| US4310163A (en) * | 1980-01-10 | 1982-01-12 | Utex Industries, Inc. | Anti-extrusion seals and packings |
| EP0052689B1 (en) * | 1980-11-26 | 1984-07-25 | Firma Carl Freudenberg | Sealing for rods or pistons |
| US4474106A (en) * | 1982-04-05 | 1984-10-02 | The United States Of America As Represented By The Secretary Of The Army | Fluidic self adjusting seal assembly |
| WO1993003298A1 (en) * | 1991-07-29 | 1993-02-18 | Allied-Signal Inc. | High temperature and high pressure seal retainer ring |
| EP2131079A1 (en) * | 2008-06-03 | 2009-12-09 | Carl Freudenberg KG | Radial shaft sealing system |
| US20150369190A1 (en) * | 2012-12-20 | 2015-12-24 | Robert Bosch Gmbh | Piston fuel pump for an internal combustion engine |
| CN111457018A (en) * | 2019-01-21 | 2020-07-28 | Fte汽车有限责任公司 | Central actuator for hydraulic or pneumatic clutch actuation |
-
1961
- 1961-08-01 GB GB2792861A patent/GB929528A/en not_active Expired
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3393917A (en) * | 1965-10-23 | 1968-07-23 | Menasco Mfg Company | Fluid seal |
| US4262915A (en) | 1978-04-17 | 1981-04-21 | Commercial Shearing, Inc. | Low friction drag seals |
| EP0015144A1 (en) * | 1979-02-22 | 1980-09-03 | Weatherford/Dmc | Piston and seal in a mud pump or the like |
| US4310163A (en) * | 1980-01-10 | 1982-01-12 | Utex Industries, Inc. | Anti-extrusion seals and packings |
| EP0052689B1 (en) * | 1980-11-26 | 1984-07-25 | Firma Carl Freudenberg | Sealing for rods or pistons |
| US4474106A (en) * | 1982-04-05 | 1984-10-02 | The United States Of America As Represented By The Secretary Of The Army | Fluidic self adjusting seal assembly |
| WO1993003298A1 (en) * | 1991-07-29 | 1993-02-18 | Allied-Signal Inc. | High temperature and high pressure seal retainer ring |
| EP2131079A1 (en) * | 2008-06-03 | 2009-12-09 | Carl Freudenberg KG | Radial shaft sealing system |
| DE102008026599A1 (en) * | 2008-06-03 | 2009-12-17 | Carl Freudenberg Kg | Radial shaft seal system |
| DE102008026599B4 (en) * | 2008-06-03 | 2016-09-01 | Rausch & Pausch Gmbh | Swivel motor with radial shaft seal system |
| US20150369190A1 (en) * | 2012-12-20 | 2015-12-24 | Robert Bosch Gmbh | Piston fuel pump for an internal combustion engine |
| US10428814B2 (en) * | 2012-12-20 | 2019-10-01 | Robert Bosch Gmbh | Piston fuel pump for an internal combustion engine |
| CN111457018A (en) * | 2019-01-21 | 2020-07-28 | Fte汽车有限责任公司 | Central actuator for hydraulic or pneumatic clutch actuation |
| CN111457018B (en) * | 2019-01-21 | 2024-01-30 | Fte汽车有限责任公司 | Central actuator for hydraulic or pneumatic clutch actuation |
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