Security gate operable with one hand

Details Security gate operable with one hand Security gate operable with one hand

1989-03-17

1990-11-06

Johnson, Blair M.

Closure fasteners

Bolts

Sliding

2923363, 292DIG37, 74483PB, E05C 104

Patent

active

049680714

ABSTRACT:
A security gate includes an installation and release mechanism that is operable with one hand. The gate comprises two panels which are extendible with respect to each other and lockable in the extended position. This makes it possible for the gate to expand across a wide variety of door openings. A handle located centrally on the top of the gate is connected by a pair of cranks and a pull rod to a pair of plungers which contact one side of the door frame. Spring bias on the plungers normally force the plungers into contact with the door frame. Slots in the upper and lower plunger links permit the plungers to accommodate irregular door frames. The handle is employed to withdraw the plungers from contact with the door frames and, conversely, the absence of handle pressure causes the gate to position itself solidly against the vertical door jamb. The handle is also employed by the operator to carry and position the gate in the doorway, allowing one-handed operation. A thumb operable handle interlock system prevents the handle from being accidentally manipulated unless one of two release interlock buttons is depressed by the thumb of the user. Also, the two extended panels are held in position by a second safety interlock which prevents a pair of extension adjustment knobs from rotating unless the extension interlock is released.

REFERENCES:
patent: 903564 (1908-11-01), Haben
patent: 1120361 (1914-12-01), Bauer
patent: 1662167 (1928-03-01), Rexinger
patent: 1683204 (1928-09-01), Mills
patent: 2559066 (1951-07-01), Diefenbronn
patent: 2581857 (1952-01-01), Harrison
patent: 2756469 (1956-07-01), Cattermole et al.
patent: 2851746 (1958-09-01), McPhaden
patent: 2896277 (1959-07-01), Halligan
patent: 2928146 (1960-03-01), Kuniholm
patent: 3000063 (1961-09-01), Hoog
patent: 3163205 (1964-12-01), Gottlieb
patent: 3216482 (1965-11-01), Lindholm
patent: 3737184 (1973-06-01), Swartz
patent: 3885616 (1975-05-01), Berkowitz
patent: 4088353 (1978-05-01), Meyer
patent: 4465262 (1984-08-01), Itri et al.
patent: 4492263 (1985-01-01), Gebhard
patent: 4607455 (1986-08-01), Bluem et al.

Affiliated with

Also associated with

Rating

Security gate operable with one hand does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1303047