Patent US4409968A successfully refreshed from Google Patents.
US3285147A
Expired / Lapsed
US
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Apparatus for spreading road materials
Assignee: Individual
•
Filing: 1963-11-22
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Granted: 1966-11-15
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Expires: 1983-11-22
Abstract
No abstract record available.
Inventors
- 👤 Gruvris Anders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:21
CPC Classifications
E; E01; E01H; E01H10/00; E01H10/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A MOTOR VEHICLE FOR APPLYING A FLUID MATERIAL TO A ROADWAY OR THE LIKE AND INCLUDING FLUID SPREADING MEANS ADAPTED TO RECEIVE A FLUID, STORE THE FLUID AND APPLY THE FLUID TO SAID ROADWAY, THE IMPROVEMENT COMPRISING HEAT EXCHANGER MEANS CONNECTED BETWEEN THE EXHAUST SYSTEM OF SAID MOTOR VEHICLE AND SAID FLUID SPREADING MEANS TO HEAT THE FLUID THEREIN, FIRST TEMPERATURE RESPONSIVE MEANS ATTACHED TO SAID MOTOR VEHICLE TO SENSE THE AMBIENT TEMERATURE, AND TEMPERATURE CONTROL MEANS FOR VARYING THE LEVEL OF HEAT APPLIED TO SAID FLUID IN RESPONSE TO CHANGES IN THE AMBIENT TEMPERATURE.
Claim 2
Dependent Claim
96 words
IN A MOTOR VEHICLE FOR APPLYING A FLUID MATERIAL TO A ROADWAY OR THE LIKE AND INCLUDING FLUID SPREADING MEANS ADAPTED TO RECEIVE A FLUID, STORE THE FLUID AND APPLY THE FLUID TO SAID ROADWAY, THE IMPROVEMENT COMPRISING HEAT EXCHANGER MEANS CONNECTED BETWEEN THE EXHAUST SYSTEM OF SAID MOTOR VEHICLE AND SAID FLUID SPREADING MEANS TO HEAT THE FLUID THEREIN, FIRST TEMPERATURE RESPONSIVE MEANS ATTACHED TO SAID MOTOR VEHICLE TO SENSE THE AMBIENT TEMERATURE, AND TEMPERATURE CONTROL MEANS FOR VARYING THE LEVEL OF HEAT APPLIED TO SAID FLUID IN RESPONSE TO CHANGES IN THE AMBIENT TEMPERATURE.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |