Patent US4136966A successfully refreshed from Google Patents.
US4136966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt sleeve mixer apparatus
Assignee: Individual
•
Filing: 1977-01-10
•
Granted: 1979-01-30
•
Expires: 1997-01-10
Abstract
Abstract In a mixing apparatus for asphalt-aggregate compositions including a rotatable cylindrical drum and utilizing an input end for introducing composition and an opposite output end for recovering or removing composition from the drum interior, the improvement comprises a final mixing chamber comprising a sleeve extending around the drum exterior adjacent the output end and rearwardly along a portion of the drum length with the drum exterior and sleeve defining the final mixing chamber, a plurality of fins or paddles secured to the rotatable drum exterior for mixing composition in the final mixing chamber and which fins assist in directing and removing composition along and from the mixing chamber.
Inventors
- 👤 Robert L. Mendenhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:30
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/02; E01C19/10; E01C19/1013; E01C19/1027; E01C19/1036; F; F28; F28D; F28D11/00; F28D11/02; F28D11/04; E01C2019/1081; E01C2019/1086; E01C2019/1095
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
112 words
In a mixing apparatus for asphalt-aggregate compositions including a rotatable cylindrical drum, means for introducing composition at an input drum end and means for recovering composition at an opposite output drum end, the improvement comprising: a sleeve extending around the drum exterior from the output end along a portion of the drum length, the sleeve and drum exterior defining a mixing chamber therebetween, port means communicating between the mixing chamber and the drum interior for directing composition from the drum interior to the mixing chamber, means in the mixing chamber for advancing the composition therein from the port means to a recovery means, and means for recovering composition from the mixing chamber.
Claim 2
Dependent Claim
112 words
In a mixing apparatus for asphalt-aggregate compositions including a rotatable cylindrical drum, means for introducing composition at an input drum end and means for recovering composition at an opposite output drum end, the improvement comprising: a sleeve extending around the drum exterior from the output end along a portion of the drum length, the sleeve and drum exterior defining a mixing chamber therebetween, port means communicating between the mixing chamber and the drum interior for directing composition from the drum interior to the mixing chamber, means in the mixing chamber for advancing the composition therein from the port means to a recovery means, and means for recovering composition from the mixing chamber.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 including means for maintaining the sleeve in stationary position and means for rotating the drum.
Claim 4
Dependent Claim
28 words
The apparatus of claim 2 wherein the means for advancing the composition comprises a plurality of fins secured to the drum exterior and received in the mixing chamber.
Claim 5
Dependent Claim
37 words
The apparatus of claim 3 wherein the drum is tilted whereby the input end is elevated with respect to the output end with the sleeve having a circumferential interior surface uniformly spaced around the exterior drum surface.
Claim 6
Dependent Claim
21 words
The apparatus of claim 4 wherein a portion of the fins are disposed at different angles from other of said fins.
Claim 7
Dependent Claim
12 words
The apparatus of claim 5 including means for adjusting the fin angles.
Claim 8
Dependent Claim
20 words
The apparatus of claim 5 including a plurality of posts secured to drum exterior on which the fins are attached.
Claim 9
Dependent Claim
15 words
The apparatus of claim 5 wherein the sleeve includes a sleeve port for recovering composition.
Claim 10
Dependent Claim
27 words
The apparatus of claim 8 wherein the drum ports are located adjacent the forward drum end and the sleeve port is located adjacent the rear sleeve end.
Claim 11
Dependent Claim
34 words
The apparatus of claim 5 including a combustion chamber, a burner for supplying heat thereto, a jacket extending around a portion of the sleeve and a port communicating the combustion chamber and sleeve interior.
Claim 12
Dependent Claim
37 words
The apparatus of claim 5 including a combustion chamber, a burner for supplying heat thereto, and a conduit extending between the jacket and combustion chamber for directing volatile hydrocarbons from the sleeve interior to the combustion chamber.
Claim 13
Dependent Claim
126 words
In a mixing apparatus for asphalt-aggregate compositions comprising a rotatable cylindrical drum in which the composition is advanced gravitationally from an input end to an opposite output end, the improvement comprising: a sleeve extending around the drum exterior from the output end along a portion of the drum length and having a mixing chamber therein, said sleeve having a forward end adjacent said drum output end and an opposite rearward end, a plurality of ports in said drum output end for directing composition from the drum interior to the sleeve mixing chamber adjacent said forward sleeve end, means in said sleeve mixing chamber for advancing the composition from said forward sleeve end to said rearward end, and means for recovering composition from said sleeve mixing chamber.
Claim 14
Dependent Claim
126 words
In a mixing apparatus for asphalt-aggregate compositions comprising a rotatable cylindrical drum in which the composition is advanced gravitationally from an input end to an opposite output end, the improvement comprising: a sleeve extending around the drum exterior from the output end along a portion of the drum length and having a mixing chamber therein, said sleeve having a forward end adjacent said drum output end and an opposite rearward end, a plurality of ports in said drum output end for directing composition from the drum interior to the sleeve mixing chamber adjacent said forward sleeve end, means in said sleeve mixing chamber for advancing the composition from said forward sleeve end to said rearward end, and means for recovering composition from said sleeve mixing chamber.
References Cited (Backward Citations)
US2448042A
Cited
US2421345A
Cited
US2715517A
Cited
US3788609A
Cited
US3845941A
Cited
US3866888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |