Lens pattern blank

Details Lens pattern blank Lens pattern blank

1986-12-04

1988-03-01

Martin, Jr., William D.

Geometrical instruments

Gauge

Lens

33200, A61B 310

Patent

active

047276541

ABSTRACT:
A lens pattern blank has an axis scale pattern on the front face thereof to enable the user to check the axis of the pattern before cutting lenses, particular for bifocal lenses. The axis scale pattern includes a mark along the X axis and to the left of the origin on the front face of the blank and a range of angles with a 0 point at the X axis and a radial center at the cross. The angular markings are disposed to the right of the origin.

REFERENCES:
patent: 1520445 (1924-12-01), Rushmer
patent: 1648500 (1927-11-01), Newell et al.
patent: 1790572 (1931-01-01), Bugbee
patent: 2190582 (1940-02-01), Wolf
patent: 2413198 (1946-12-01), Stewart
patent: 3313031 (1967-04-01), Lowe
patent: 4244639 (1981-01-01), Kanda
patent: 4299032 (1981-11-01), Young
patent: 4656754 (1987-04-01), Cingone

Affiliated with

Also associated with

Rating

Lens pattern blank does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lens pattern blank, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lens pattern blank will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-990630