Mantrap

Details Mantrap Mantrap

1994-04-15

1995-08-29

Kannan, Philip C.

Movable or removable closures

Plural wings radiate from common pivot; i.e., revolving

49 44, 49141, E06B 1108

Patent

active

054449413

ABSTRACT:
A mantrap in which a demarcation in shape of a segment of an arc is provided at one side of a passage. The open side of the demarcation faces the other side of the passage. The demarcation extends, furthermore, along a predetermined angle of circumference and has a barrier element that rotates around a vertical axis positioned approximately in the center of the demarcation and is provided with leaves extending out from the vertical axis of rotation and including equal angles. The leaves have grating rods positioned separately and one above another. A barrier rake extends out from an axis of the barrier element to the other side of the passage, and has grating rods displaced in position from the grating rods in the leaves and one above another. The barrier-rake rods allow unimpeded rotation of the barrier element. The barrier rake, furthermore, is a gate element, and the barrier element is a rotating door with at least two leaves.

REFERENCES:
patent: 2258896 (1941-10-01), Kelker, Jr.
patent: 3839825 (1974-10-01), Nica
patent: 4184289 (1980-01-01), Lambertson
patent: 4255900 (1981-03-01), Magnani
patent: 4358909 (1982-11-01), Trikilis
patent: 4562665 (1986-01-01), Blackston
patent: 4640046 (1987-02-01), Rushford

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1812058