Directly machined raised structure retroreflective cube corner a

Details Directly machined raised structure retroreflective cube corner a Directly machined raised structure retroreflective cube corner a

1997-08-08

1999-06-22

Spyrou, Cassandra

Optical: systems and elements

Signal reflector

3-corner retroreflective

359530, 359514, G02B 5122, G02B 5124

Patent

active

059148128

ABSTRACT:
A cube corner article and method of manufacturing the article from a series of directly machinable unitary substrates. The method of manufacture comprises the first step of providing an initial unitary directly machinable substrate of material suitable for forming retroreflective surfaces. Then, a first cube corner element array zone is formed having a plurality of geometric structures including cube corner elements. The zone is created by directly machining at least two sets of parallel grooves in the substrate. A replica of the cube corner element array zone is formed as an additional unitary substrate suitable for forming retroreflective surfaces. Portions of the replica substrate material are removed. The removal of these portions forms at least two intersecting cavities bounded by side walls in the replica at a depth at least that of the cube corner elements formed by the groove sets. Each cavity comprises at least one side wall which extends to a depth into the replica substantially equal to the deepest depth of any other intersecting cavity.

REFERENCES:
patent: 1591572 (1926-07-01), Stimson
patent: 2310790 (1943-02-01), Jungersen
patent: 2407680 (1946-09-01), Palmquist et al.
patent: 3190178 (1965-06-01), McKenzie
patent: 3417959 (1968-12-01), Schultz
patent: 3632695 (1972-01-01), Howell
patent: 3684348 (1972-08-01), Rowland
patent: 3689346 (1972-09-01), Rowland
patent: 3712706 (1973-01-01), Stamm
patent: 3810804 (1974-05-01), Rowland
patent: 3811983 (1974-05-01), Rowland
patent: 3922065 (1975-11-01), Schultz
patent: 3924929 (1975-12-01), Holmen et al.
patent: 3926402 (1975-12-01), Heenan
patent: 3935359 (1976-01-01), Rowland
patent: 3948714 (1976-04-01), Steiner et al.
patent: 4025159 (1977-05-01), McGrath
patent: 4202600 (1980-05-01), Burke et al.
patent: 4208090 (1980-06-01), Heenan
patent: 4243618 (1981-01-01), Van Arnam
patent: 4349598 (1982-09-01), White
patent: 4498733 (1985-02-01), Flanagan
patent: 4576850 (1986-03-01), Martens
patent: 4582885 (1986-04-01), Barber
patent: 4588258 (1986-05-01), Hoopman
patent: 4618518 (1986-10-01), Pricone et al.
patent: 4668558 (1987-05-01), Barber
patent: 4726706 (1988-02-01), Attar
patent: 4801193 (1989-01-01), Martin
patent: 4895428 (1990-01-01), Nelson et al.
patent: 4938563 (1990-07-01), Nelson et al.
patent: 5122902 (1992-06-01), Benson
patent: 5171624 (1992-12-01), Walter
patent: 5272562 (1993-12-01), Coderre
patent: 5277513 (1994-01-01), Flanagan et al.
patent: 5340231 (1994-08-01), Steere et al.
patent: 5557836 (1996-09-01), Smith et al.
patent: 5564870 (1996-10-01), Benson et al.
patent: 5600484 (1997-02-01), Benson et al.
patent: 5614286 (1997-03-01), Bacon, Jr. et al.

Affiliated with

Also associated with

Rating

Directly machined raised structure retroreflective cube corner a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Directly machined raised structure retroreflective cube corner a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Directly machined raised structure retroreflective cube corner a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1711818