GB897293A - Long travel hydraulic cushion device - Google Patents
Long travel hydraulic cushion deviceInfo
- Publication number
- GB897293A GB897293A GB3523860A GB3523860A GB897293A GB 897293 A GB897293 A GB 897293A GB 3523860 A GB3523860 A GB 3523860A GB 3523860 A GB3523860 A GB 3523860A GB 897293 A GB897293 A GB 897293A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- rod
- cylinder
- sleeve
- passages
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
- F16F9/486—Arrangements for providing different damping effects at different parts of the stroke comprising a pin or stem co-operating with an aperture, e.g. a cylinder-mounted stem co-operating with a hollow piston rod
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/342—Throttling passages operating with metering pins
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
897,293. Stuffing-box substitutes. PULLMAN Inc. Oct. 14 1960, No. 35238/60. Class 122 (5). [Also in Group XXXII] Hydraulic shock-absorbers are provided with flexible tubular seals between the piston-rod and cylinder to eliminate the necessity for sliding seals. In one example the piston-rod 44 Fig. 3 and cylinder end wall 150 guiding the piston-rod 44 are sealed externally of the cylinder by a flexible tubular sleeve 18 of rubber, neoprene, &c. clamped at its ends by metal clips 42, 46 and adapted to roll over the pistonrod 44. Passages 66 in the end wall 150 permit surplus hydraulic fluid to flow freely into the sealed space formed by the sleeve 18 during the compression stroke so that the sleeve becomes inflated and acts as a fluid recuperator on the return stroke. In a modification, the seal comprises bellows 41, Fig. 13, arranged between the piston-rod 139 and piston guide 152 internally of the cylinder so that hydraulic fluid is prevented from reaching the sliding surfaces. Brass wear-rings 191, 193 are provided on the inner face of the bellows where rubbing may take place against the piston-rod 139. Passages 66 in the guide permit free flow of ambient air.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3523860A GB897293A (en) | 1960-10-14 | 1960-10-14 | Long travel hydraulic cushion device |
FR844868A FR1282582A (en) | 1960-10-14 | 1960-11-24 | Improvements to long-stroke hydraulic shock absorbers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3523860A GB897293A (en) | 1960-10-14 | 1960-10-14 | Long travel hydraulic cushion device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB897293A true GB897293A (en) | 1962-05-23 |
Family
ID=10375450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3523860A Expired GB897293A (en) | 1960-10-14 | 1960-10-14 | Long travel hydraulic cushion device |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB897293A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3294388A (en) * | 1964-09-17 | 1966-12-27 | Pullman Inc | Hydraulic cushion |
FR2397282A1 (en) * | 1977-07-13 | 1979-02-09 | Usm Corp | SEALING DEVICE FOR EXTRUDER |
-
1960
- 1960-10-14 GB GB3523860A patent/GB897293A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3294388A (en) * | 1964-09-17 | 1966-12-27 | Pullman Inc | Hydraulic cushion |
FR2397282A1 (en) * | 1977-07-13 | 1979-02-09 | Usm Corp | SEALING DEVICE FOR EXTRUDER |
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