US4555182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for recycling asphaltic concrete
Assignee: Individual
•
Filing: 1984-07-26
•
Granted: 1985-11-26
•
Expires: 2004-07-26
Abstract
Abstract An improved process for recycling asphaltic concrete comprises introducing asphaltic concrete particles at one end of an elongated rotating drum while supplying flame and hot gases of combustion to the drum at the opposite end, and introducing virgin aggregate into the drum intermediate the two ends. The asphaltic concrete is heated as it travels along a portion of the length of the drum and is recovered just prior to reaching the position along the drum length at which the aggregate is introduced. The aggregate is heated as it travels toward the end of the drum at which the flame and hot gases are introduced. Heated aggregate may be returned to the drum for further heating, and may be directed to the opposite drum end and mixed with the asphaltic concrete in a section of the drum.
Inventors
- 👤 Robert L. Mendenhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:47
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/02; E01C19/10; E01C19/1013; E01C19/1027; E01C19/1036; E01C2019/1081; E01C2019/109
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
102 words
An apparatus for treating asphaltic concrete comprising an elongated rotatable drum having a burner at a first end thereof for directing flame and hot gases of combustion into said drum toward an opposite second end, first means for introducing composition into said drum intermediate said first and second ends in a first section of said drum, second means for introducing composition into said drum adjacent said second end in a second section of said drum, first means for recovering composition adjacent said first end, and second means for recovering composition from said drum between said first and second means for introducing composition.
Claim 2
Independent Claim
102 words
An apparatus for treating asphaltic concrete comprising an elongated rotatable drum having a burner at a first end thereof for directing flame and hot gases of combustion into said drum toward an opposite second end, first means for introducing composition into said drum intermediate said first and second ends in a first section of said drum, second means for introducing composition into said drum adjacent said second end in a second section of said drum, first means for recovering composition adjacent said first end, and second means for recovering composition from said drum between said first and second means for introducing composition.
Claim 3
Dependent Claim
28 words
Apparatus of claim 1 wherein said first means for introducing composition comprises a first input port communicating interiorly of said drum between said first and second ends thereof.
Claim 4
Dependent Claim
14 words
Apparatus of claim 2 wherein said first input port extends radially into said drum.
Claim 5
Dependent Claim
19 words
Apparatus of claim 3 wherein said first means for introducing composition includes a plurality of said first input ports.
Claim 6
Dependent Claim
14 words
Apparatus of claim 4 including means for feeding composition to said first input ports.
Claim 7
Dependent Claim
26 words
Apparatus of claim 2 wherein said first means for recovering composition comprises a first recovery port communicating interiorly of said drum adjacent said first input port.
Claim 8
Dependent Claim
23 words
Apparatus of claim 2 wherein said second means for introducing composition comprises a second input port adjacent said second end of said drum.
Claim 9
Dependent Claim
16 words
Apparatus of claim 1 wherein said second means for recovering composition comprises a second recovery port.
Claim 10
Dependent Claim
31 words
Apparatus of claim 1 including first conveyor means for directing at least a portion of composition recovered at said first end of said drum to said first section of said drum.
Claim 11
Dependent Claim
31 words
Apparatus of claim 9 including second conveyor means for directing at least a portion of composition recovered at said first end of said drum to said second section of said drum.
Claim 12
Dependent Claim
31 words
Apparatus of claim 1 including second conveyor means for directing at least a portion of composition recovered at said first end of said drum to said second section of said drum.
Claim 13
Dependent Claim
133 words
Apparatus for producing asphaltic concrete comprising: an elongated rotatable drum having a first end and a second end, a first section extending from a location intermediate said drum ends to said first drum end, and a second section extending from said second drum end to said intermediate location, a burner at said first end for introducing flame and hot gases of combustion into said drum, a first input port for introducing composition into said first section of said drum adjacent said intermediate location, a second input port for introducing composition into said second portion of said drum adjacent said second drum end, a first recovery port adjacent said first end for recovering composition from said first section, and a second recovery port adjacent said intermediate location for recovering composition from said second section.
Claim 14
Dependent Claim
133 words
Apparatus for producing asphaltic concrete comprising: an elongated rotatable drum having a first end and a second end, a first section extending from a location intermediate said drum ends to said first drum end, and a second section extending from said second drum end to said intermediate location, a burner at said first end for introducing flame and hot gases of combustion into said drum, a first input port for introducing composition into said first section of said drum adjacent said intermediate location, a second input port for introducing composition into said second portion of said drum adjacent said second drum end, a first recovery port adjacent said first end for recovering composition from said first section, and a second recovery port adjacent said intermediate location for recovering composition from said second section.
Claim 15
Dependent Claim
24 words
Apparatus of claim 12 including first conveyor means for directing a portion of composition from said first recovery port to said first input port.
Claim 16
Dependent Claim
24 words
Apparatus of claim 13 including second conveyor means for directing a portion of composition from said first recovery port to said second input port.
Claim 17
Dependent Claim
24 words
Apparatus of claim 12 including second conveyor means for directing a portion of composition from said first recovery port to said second input port.
Claim 18
Independent Claim
133 words
An apparatus for treating asphaltic concrete comprising: an elongated rotatable drum having a burner at a first end thereof for directing hot gases for heating composition therein, a first input port for introducing particulate composition into a first section of said drum extending between said first input port and said first end of said drum, a second input port at a second end of said drum opposite said first end for introducing particulate composition into a second section of said drum extending between said second input port and said first section, a first recovery port adjacent said first end of said drum for recovering heated composition from said first section, and a second recovery port located in said second section adjacent said second input port for recovery heated composition from said second section.
Claim 19
Independent Claim
133 words
An apparatus for treating asphaltic concrete comprising: an elongated rotatable drum having a burner at a first end thereof for directing hot gases for heating composition therein, a first input port for introducing particulate composition into a first section of said drum extending between said first input port and said first end of said drum, a second input port at a second end of said drum opposite said first end for introducing particulate composition into a second section of said drum extending between said second input port and said first section, a first recovery port adjacent said first end of said drum for recovering heated composition from said first section, and a second recovery port located in said second section adjacent said second input port for recovery heated composition from said second section.
References Cited (Backward Citations)
US1774649A
Cited
US3614071A
Cited
US3845941A
Cited
US4189238A
Cited
US4095284A
Cited
US4182631A
Cited
US3999743A
Cited
US4177080A
Cited
US4075710A
Cited
US4318619A
Cited
US4147436A
Cited
US4332478A
Cited
US4309113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |