U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Windshield stripper

Patent 5984216 Issued on November 16, 1999. Estimated Expiration Date: Icon_subject November 25, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

113443

1960626

3436028

3545690

3637146

Pulverizing and grinding hammer
Patent #: 5465912
Issued on: 11/14/1995
Inventor: Graybill, et al.

Two stage hammer mill with particle separator Patent #: 5505390
Issued on: 04/09/1996
Inventor: Rodgers

Inventors

Assignee

Application

No. 750207 filed on 11/25/1996

US Classes:

241/79.2, Rotating comminutor combined with a sifting device241/186.4, Rotating or oscillating feed or discharge conveyor241/189.1, Rotary striking member with circumferential or tangential flow241/194Striking member pivoted to rotor

Examiners

Primary: Husar, John M.

Attorney, Agent or Firm

International Classes

B02C 013/04
B02C 013/286

Abstract

A device for recycling automotive windshields. An automotive windshield is comprised of two layers of glass and a plastic liner sandwiched in between The present invention strips the glass from both surfaces of the inner plastic liner, comminutes the glass and separates the two substances for recovery. A windshield is fed into the unit by means of dual horizontal feed rollers. The windshield then passes over a stationery breaker bar and into the path of a plurality of rotating flexible impactors. The force of the rotating impactors on the top surface and the stationery breaker bar on the under surface act together to strip the glass from both sides of the inner plastic liner material. The glass is hammered into small particles the size of gravel and sand while the plastic breaks into much larger fragments. A shaker screen located below the rotating impactors serves to separate the two substances for individual recovery.

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