Reshaping a glass lens blank suspended on a flow of gas

Details Reshaping a glass lens blank suspended on a flow of gas Reshaping a glass lens blank suspended on a flow of gas

1993-06-01

1994-01-25

Jones, W. Gary

Glass manufacturing

Processes

Utilizing parting or lubricating layer

65102, 651822, 65285, 65286, C03B 2300

Patent

active

052812499

ABSTRACT:
A method and apparatus for imparting a predetermined contour to an ophthalmic glass lens.
The method comprises positioning a forming manifold in the base of a reshaping chamber, the upper surface of the manifold having a surface contour that is the reverse of the bottom contour surface of the reshaped lens, positioning the lens blank in the chamber, heating the lens blank to a temperature at which the blank deforms, and establishing a continuous, lateral flow of gas on the upper surface of the forming manifold whereby the glass is supported while it sags to the desired shape.
The apparatus comprises a reshaping chamber, a source of heat to bring a lens blank to its deforming temperature, a forming manifold having an upper surface contour that is the reverse of the desired contour on the lower surface of the reshaped lens blank, and means to supply a continuous, lateral flow of gas on the upper surface of the manifold whereby the glass blank is supported while it deforms to the desired shape.

REFERENCES:
patent: 2395727 (1943-01-01), Devol
patent: 2817928 (1957-12-01), Lambert et al.
patent: 3340032 (1967-09-01), Kasperowicz et al.
patent: 3449102 (1965-03-01), Nedelec
patent: 3756797 (1971-07-01), Akeyoshi
patent: 3961927 (1976-06-01), Alderson et al.
patent: 4115090 (1978-09-01), Comperatore

Affiliated with

Also associated with

Rating

Reshaping a glass lens blank suspended on a flow of gas does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reshaping a glass lens blank suspended on a flow of gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reshaping a glass lens blank suspended on a flow of gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-725073