Folding and locking drafting aid apparatus and method

Details Folding and locking drafting aid apparatus and method Folding and locking drafting aid apparatus and method

1994-09-12

1996-04-23

Fulton, Christopher W.

Geometrical instruments

Gauge

Template

33500, 33483, 33465, 24543, G01B 306

Patent

active

055092128

ABSTRACT:
A folding drafting aid apparatus includes a planar member having a first and second planar member ends and a first planar member side and a second planar member side, and being foldable at a hinge structure so that the second planar member side pivots face to face against itself; a flexible, resilient first tab having a free end and retained on a first tab structure; and a flexible, resilient second tab having a tab free end and retained on a second tab structure; where the tabs are positioned relative to each other so that when the planar member is folded at the hinge structure to pivot the second planar member side face to face against itself, one tab overlays the other tab and so that pressing one tab against the other tab causes both tabs to bend until the free end of the one tab crosses over the free end of the other tab and remains in this crossed-over position to hold the planar member in the folded position.

REFERENCES:
patent: 827932 (1906-08-01), Morehouse
patent: 2151467 (1939-03-01), Harsin
patent: 2371485 (1945-03-01), Waldman
patent: 4887335 (1989-12-01), Folkmar
patent: 5307543 (1994-05-01), Krillenberger

Affiliated with

Also associated with

Rating

Folding and locking drafting aid apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Folding and locking drafting aid apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Folding and locking drafting aid apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2301289