US4402336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic flow dividing and integrating equipment
Assignee: Bosch Rexroth AG
•
Filing: 1981-05-07
•
Granted: 1983-09-06
•
Expires: 2001-05-07
Abstract
Abstract The invention relates to hydraulic flow dividing and integrating equipment, having a regulating slide valve in its flow path and calibrated throttlings in an admission channel of the flow path. The calibrated throttlings are adjustable as a function of entering liquid flow. Mobile rings are arranged on the regulating slide valve. With these simple technical arrangements, the field of application of hydraulic systems, e.g. for gear synchronization, is considerably enlarged.
Inventors
- 👤 Gabor Kalmanczhelyi
- 👤 Pal Kiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:34
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/022; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2524; Y10T137/2559; Y10T137/2564; Y10T137/265; Y10T137/2657
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
178 words
In hydraulic flow dividing and integrating equipment comprising a valve body, a slide valve slidable in the valve body and dividing the valve body into two first chambers through which the slide valve passes, two passageways communicating with spaced portions of each of said first chambers, throttle means in some of said passageways and two second chambers disposed one at each end of the slide valve, each said first chamber communicating with its adjacent said second chamber; the improvement comprising rings slidable on the slide valve in each of said chambers, said rings being disposed between the said two passages that communicate with each of said chambers, the interior of each of the chambers having edges thereon coacting with edges on the rings whereby movement of the rings relative to the slide valve changes the spacing of said edges thereby automatically changing the cross section of the fluid path between the said two passages in each chamber, and a bypass (21) with throttle means (22) therein and a nonreturn valve (23) for bypassing the firstmentioned throttle means (3).
Claim 2
Dependent Claim
178 words
In hydraulic flow dividing and integrating equipment comprising a valve body, a slide valve slidable in the valve body and dividing the valve body into two first chambers through which the slide valve passes, two passageways communicating with spaced portions of each of said first chambers, throttle means in some of said passageways and two second chambers disposed one at each end of the slide valve, each said first chamber communicating with its adjacent said second chamber; the improvement comprising rings slidable on the slide valve in each of said chambers, said rings being disposed between the said two passages that communicate with each of said chambers, the interior of each of the chambers having edges thereon coacting with edges on the rings whereby movement of the rings relative to the slide valve changes the spacing of said edges thereby automatically changing the cross section of the fluid path between the said two passages in each chamber, and a bypass (21) with throttle means (22) therein and a nonreturn valve (23) for bypassing the firstmentioned throttle means (3).
Claim 3
Dependent Claim
25 words
Equipment as claimed in claim 1, two of said passages communicating with a single passage, said throttle means controlling the flow through said two passages.
Claim 4
Dependent Claim
19 words
Equipment as claimed in claim 2, said throttle means comprising a sleeve and a slide slidable in said sleeve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |