Robert H Nath

US Patent:

53854012, Jan 31, 1995

Filed:

Oct 6, 1993

Appl. No.:

8/132359

Inventors:

Robert H. Nath - Albuquerque NM

Assignee:

Cyclean, Inc. - Austin TX

International Classification:

C08L 9500

US Classification:

366 7

Abstract:

A method of incorporating used automobile tire scrap into asphalt uses a step of saturating rubber particles with an aromatic oil. The rubber particle containing oil does not absorb additional oils from the asphalt binder materials and the integrity of the asphalt mix is not compromised.

US Patent:

53442296, Sep 6, 1994

Filed:

Sep 23, 1992

Appl. No.:

7/949564

Inventors:

Robert H. Nath - Albuquerque NM
John Wiley - Leander TX
Robert Erickson - Georgetown TX
Carl R. Hutchison - Austin TX
Mike Miles - Georgetown TX

Assignee:

Cyclean, Inc. - Round Rock TX

International Classification:

B28C 546

US Classification:

366 25

Abstract:

An apparatus for controlling the angular velocity and slope angle of a hot mix asphalt drum as a function of the temperature gradient across the drum outlet. Uneven gas outlet temperature indicates that the veil of RAP (Recycled Asphalt Pavement) in the drum is insufficient. The veil is increased by increasing drum speed. The complete recycled asphalt pavement hot mix asphalt plant uses uneven gas outlet temperatures to change drum operating parameters.

US Patent:

49127420, Mar 27, 1990

Filed:

May 12, 1988

Appl. No.:

7/193064

Inventors:

Robert H. Nath - Austin TX

International Classification:

H05B 664

US Classification:

219 1055M

Abstract:

An apparatus and method of destroying electronic surveillance devices inside building structures by the use of radio frequency energy is shown and described. Microwave energy is generated by a magnetron and directed to the building structure either by continuous waves of by short bursts of energy.

US Patent:

53223675, Jun 21, 1994

Filed:

Sep 23, 1992

Appl. No.:

7/948639

Inventors:

Robert H. Nath - Austin TX
John Wiley - Leander TX
Robert Erickson - Georgetown TX
Carl R. Hutchinson - Austin TX
Mike Miles - Georgetown TX

Assignee:

Cyclean, Inc. - Round Rock TX

International Classification:

B28C 546
B28C 702

US Classification:

366 7

Abstract:

A process for the production of hot mix asphalt (HMA) by the treatment of virgin material alone or adding reclaimed or recycled asphalt pavement (RAP) (up to 100% of the HMA). The HMA is first heated in either a parallel or a counter flow rotating drum which is supplied with hot combustion gases generated by a remote low NO. sub. x burner. The process is controlled by a micro-processor which controls RAP temperature, mixture gradation, emissions and production rate as a function of measured drum conditions such as temperature at the drum inlet, drum speed, drum slope, drum RPM, output hydrocarbons, drum gas outlet temperature, and amount of aggregate added.

US Patent:

58104712, Sep 22, 1998

Filed:

Jan 14, 1994

Appl. No.:

8/181445

Inventors:

Robert H. Nath - Austin TX
John Wiley - Leander TX
Robert Erickson - Georgetown TX

Assignee:

Cyclean, Inc. - San Fernando CA

International Classification:

B28C 546

US Classification:

366 25

Abstract:

An apparatus for the treatment of 100% reclaimed asphaltic pavement (RAP) uses low temperatures and no direct radiation from a burner flame to the RAP. The RAP is first heated in a counter flow drum which is supplied with hot combusting gases generated by a remote low NOx burner. The temperature of the drum input gases is preferably around 1100 degrees F and the output temperature of the gases may be 100 degrees F or less greater than the input temperature of the RAP. The RAP may be heated with a microwave oven to raise the RAP to a final temperature, although this step is not absolutely necessary in the counterflow design of this invention.

US Patent:

53039998, Apr 19, 1994

Filed:

Nov 27, 1991

Appl. No.:

7/803642

Inventors:

Robert H. Nath - Austin TX
John Wiley - Leander TX
Robert Erickson - Georgetown TX
Carl R. Hutchison - Austin TX
Mike Miles - Georgetown TX

Assignee:

Cyclean, Inc. - Round Rock TX

International Classification:

B28C 546

US Classification:

366 25

Abstract:

Apparatus which controls recycled asphalt production rate, emissions, mix and output temperature in an asphalt mixer. Computer flow charts show control decisions based upon measured parameters which include drum slope, drum RPM, gas volume into the drum, gas volume out of the drum, drum inlet gas temperature, drum outlet gas temperature, hydrocarbons in the exhaust, and recycled asphalt outlet temperature.

US Patent:

53522753, Oct 4, 1994

Filed:

Sep 25, 1992

Appl. No.:

7/951084

Inventors:

Robert Nath - Austin TX
Robert Erickson - Georgetown TX
John Wiley - Leander TX
Harry Hebard - Burnet TX
Michael Miles - Georgetown TX

Assignee:

Cyclean, Inc. - Round Rock TX

International Classification:

B01D 5304

US Classification:

95117

Abstract:

An apparatus and process is provided for the production of hot mix asphalt (HMA) by the treatment of virgin material alone or adding reclaimed or recycled asphalt pavement (RAP) of up to 100% of the HMA comprised of reclaimed asphaltic pavement (RAP). The HMA is first heated in either a parallel or a counter flow rotating drum which is supplied with hot combustion gases generated by a remote low NO. sub. x burner. The temperature of hot gases entering the drum is from about 400. degree. to 2,000. degree. F. , and the temperature of gases exiting from the drum is from about 130. degree. to 220. degree. F. The HMA material optionally can be subjected to microwave radiation to raise the material to a final temperature, or optionally to only reorient the dipolar molecules of the material without any measurable heating of the material. The exhaust gas is treated and made environmentally safe. The hot gases exiting from the drum are passed through a knockout box and then through a baghouse having acrylic bags coated with a protective layer of particulate material.

US Patent:

58862633, Mar 23, 1999

Filed:

Mar 27, 1997

Appl. No.:

8/826149

Inventors:

Robert H. Nath - Albuquerque NM
James J. Schwarz - Albuquerque NM
Jay G. Saxton - Corrales NM

Assignee:

Quatrosonics - Albuquerque NM

International Classification:

G01N 2912
G06G 768

US Classification:

73579

Abstract:

A method of resonant ultrasonic measurement frequencies to determine materials properties is combined with the use of a finite element model and empirical data made from an actual prototype part to create a validated finite element model. The validated finite element model is then used as a standard for comparison to additional production parts, and production part measurement data is stored and archived by part serial number for future comparison to part tests performed during periodic maintenance of equipment utilizing the part after shipment to customer.