GB902217A - Improvements in or relating to hydraulic pumps - Google Patents
Improvements in or relating to hydraulic pumpsInfo
- Publication number
- GB902217A GB902217A GB299859A GB299859A GB902217A GB 902217 A GB902217 A GB 902217A GB 299859 A GB299859 A GB 299859A GB 299859 A GB299859 A GB 299859A GB 902217 A GB902217 A GB 902217A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plunger
- valve
- spindle
- fixed
- cam
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/0408—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics details, e.g. antifreeze for suspension fluid, pumps, retarding means per se
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
902,217. Reciprocating pumps. ARMSTRONG PATENTS CO. Ltd. March 7, 1960 [Jan. 28, 1959], No. 2998/59. Class 102(1). [Also in Group XXXII] A hydraulic pump supplying pressure liquid, e.g., to a ram in a road vehicle spring suspension system, comprises a pump body 10, Fig. 2, formed with a reservoir 12 and a bore 18 fitted with a screw-threaded sleeve 22 reciprocably mounting a pump plunger 24. The plunger 24 urged by a spring 28 into engagement with a cam 26 fixed on a spindle 14 oscillatable by a lever 16 is formed with a passage controlled by a ball valve 34 which opens on upward movement of the plunger. A ball valve 44 opens on downward movement of the plunger to deliver liquid into a conduit 50 connected to the ram cylinder. In another bore 20, a further screw-threaded sleeve 54 mounts a plunger 64 engaging a ball release valve 58 and urged by a spring 68 into engagement with a further cam 66 fixed to the spindle 14. The cams 26, 66 are arranged on the spindle 14 so that pressure liquid is -either supplied to or exhausted from the ram cylinder depending on the loading of the vehicle to maintain the vehicle in the same position relative to the ground. An overpressure valve fitted in a passage between the conduit 50 and the reservoir prevents the occurrence of hydraulic lock. In another embodiment, a pair of pump plungers 24, Fig. 4, are mounted side-by-side in bores 19 and co-operate with a single cam 27 fixed to the shaft 14. The valve 58 and its plunger 64 are replaced by a valve 82, Fig. 5, having a fluted stem 90 engaging a face cam 92 fixed to the spindle 14. Specification 867,514 is referred to.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB299859A GB902217A (en) | 1959-01-28 | 1959-01-28 | Improvements in or relating to hydraulic pumps |
| US15429A US3077837A (en) | 1959-01-28 | 1960-03-16 | Hydraulic pumps |
| FR821659A FR1251645A (en) | 1959-01-28 | 1960-03-17 | Improvements to hydraulic pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB299859A GB902217A (en) | 1959-01-28 | 1959-01-28 | Improvements in or relating to hydraulic pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB902217A true GB902217A (en) | 1962-08-01 |
Family
ID=9750013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB299859A Expired GB902217A (en) | 1959-01-28 | 1959-01-28 | Improvements in or relating to hydraulic pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB902217A (en) |
-
1959
- 1959-01-28 GB GB299859A patent/GB902217A/en not_active Expired
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