US3356261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control for asphalt spreader
Assignee: Enerpac Tool Group Corp
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Filing: 1965-04-22
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Granted: 1967-12-05
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Expires: 1985-04-22
Abstract
No abstract record available.
Inventors
- 👤 Stein Gary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:54
CPC Classifications
B; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/06; E; E01; E01C; E01C19/00; E01C19/12; E01C19/16; E01C19/17; E01C19/174; E01C19/20; E01C19/201; E01C19/202
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A DEVICE FOR CONTROLLING THE RATE OF DISTRIBUTION OF A FLUID MATERIAL FROM A MOVING VEHICLE COMPRISING AN ENGINE PROPELLING SAID VEHICLE, A HYDRAULIC PUMP DRIVEN BY SAID ENGINE, FIRST MEANS TO VARY THE OUTPUT OF SAID PUMP, A HYDRAULIC MOTOR DRIVEN BY SAID PUMP, AN OUTPUT SHAFT DRIVEN BY SAID MOTOR, A MATERIAL DISTRIBUTING MECHANISM DRIVEN BY SAID OUTPUT SHAFT AT A RATE CORRESPONDING TO THE SPEED AT WHICH SAID PUMP DRIVES SAID MOTOR, A VARIABLE FLUID DELIVERY MEANS ALSO DRIVEN BY SAID OUTPUT SHAFT, SECOND MEANS DETECTING THE SPEED AT WHICH SAID VEHICLE IS TRAVELING AND THIRD MEANS RESPONSIVE TO SAID SECOND MEANS FOR ADJUSTING SAID FIRST MEANS.
Claim 2
Independent Claim
110 words
A DEVICE FOR CONTROLLING THE RATE OF DISTRIBUTION OF A FLUID MATERIAL FROM A MOVING VEHICLE COMPRISING AN ENGINE PROPELLING SAID VEHICLE, A HYDRAULIC PUMP DRIVEN BY SAID ENGINE, FIRST MEANS TO VARY THE OUTPUT OF SAID PUMP, A HYDRAULIC MOTOR DRIVEN BY SAID PUMP, AN OUTPUT SHAFT DRIVEN BY SAID MOTOR, A MATERIAL DISTRIBUTING MECHANISM DRIVEN BY SAID OUTPUT SHAFT AT A RATE CORRESPONDING TO THE SPEED AT WHICH SAID PUMP DRIVES SAID MOTOR, A VARIABLE FLUID DELIVERY MEANS ALSO DRIVEN BY SAID OUTPUT SHAFT, SECOND MEANS DETECTING THE SPEED AT WHICH SAID VEHICLE IS TRAVELING AND THIRD MEANS RESPONSIVE TO SAID SECOND MEANS FOR ADJUSTING SAID FIRST MEANS.
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |