Patent US3686959A successfully refreshed from Google Patents.
US3686959A
Expired / Lapsed
US
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Method and apparatus for determining the relative proportions by weight of asphalt components
Assignee: OFFRINGA NV
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Filing: 1971-02-09
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Granted: 1972-08-29
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Expires: 1991-02-09
Abstract
Abstract A method and an apparatus to determine the relative proportions by weight of the components of an asphalt sample, in which successively the sample is weighed, the gravel with mortar and bitumen adhering thereto is separated from said sample, said dirty gravel is washed, a small part of the rest of the sample is treated to separate the bitumen therefrom and both the bitumenless rest of said sample part and the washed gravel are weighed.
Inventors
- 👤 Kornelis Kruiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:22
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
The method of determining the relative proportions by weight of the components of an asphalt sample which consists of a gravel component, a mortar component and a bitumen component, which comprises the steps of: a. weighing the sample; b. separating the sample into a first part which consists of said gravel component plus mortar and bitumen adhering thereto and a second part consisting of mortar and bitumen adhering thereto; c. washing said first part to remove the mortar and bitumen therefrom; d. weighing the washed gravel of step (c); e. separating said second part of the sample into a small partial sample and a remaining portion; f. separating bitumen from said small partial sample by extraction to determine the bitumen content of the mixture of bitumen and mortar; g. weighing said remaining portion of said second part; and h. determining the relative proportions of said components by weight from the weight of the washed gravel determined in step (d), the bitumen content determined in step (f), and the weight determined in step (g).
Claim 2
Independent Claim
173 words
The method of determining the relative proportions by weight of the components of an asphalt sample which consists of a gravel component, a mortar component and a bitumen component, which comprises the steps of: a. weighing the sample; b. separating the sample into a first part which consists of said gravel component plus mortar and bitumen adhering thereto and a second part consisting of mortar and bitumen adhering thereto; c. washing said first part to remove the mortar and bitumen therefrom; d. weighing the washed gravel of step (c); e. separating said second part of the sample into a small partial sample and a remaining portion; f. separating bitumen from said small partial sample by extraction to determine the bitumen content of the mixture of bitumen and mortar; g. weighing said remaining portion of said second part; and h. determining the relative proportions of said components by weight from the weight of the washed gravel determined in step (d), the bitumen content determined in step (f), and the weight determined in step (g).
Claim 3
Dependent Claim
163 words
Apparatus for determining the relative proportions by weight of the components of an asphalt sample which consists of a gravel component, a mortar component and a bitumen component, which comprises: a horizontally disposed drum having a foraminous cylindrical side wall presenting openings of a size to pass all of said components except said gravel component; means for rotatably mounting said drum about its longitudinal axis and for disposition in any one of three laterally displaced positions; means for selectively rotating said drum; means for collecting mortar and bitumen components passing through said side wall of the drum as same is rotated at one of said positions thereof whereby the gravel component plus adhering mortar and bitumen remain in the drum; means for bathing the retained contents of said drum in a solvent bath as the drum is rotated at another of said positions thereof; and means for flushing the retained contents of said drum as same is rotated at the third position thereof.
Claim 4
Dependent Claim
163 words
Apparatus for determining the relative proportions by weight of the components of an asphalt sample which consists of a gravel component, a mortar component and a bitumen component, which comprises: a horizontally disposed drum having a foraminous cylindrical side wall presenting openings of a size to pass all of said components except said gravel component; means for rotatably mounting said drum about its longitudinal axis and for disposition in any one of three laterally displaced positions; means for selectively rotating said drum; means for collecting mortar and bitumen components passing through said side wall of the drum as same is rotated at one of said positions thereof whereby the gravel component plus adhering mortar and bitumen remain in the drum; means for bathing the retained contents of said drum in a solvent bath as the drum is rotated at another of said positions thereof; and means for flushing the retained contents of said drum as same is rotated at the third position thereof.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |