Damper and method of controlling a door

Details Damper and method of controlling a door Damper and method of controlling a door

1992-11-19

1994-03-08

Larson, Lowell A.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Checks and closers

Liquid

16 56, E05F 310, E05F 322

Patent

active

052916308

ABSTRACT:
A door closer comprises a housing containing a cylinder and two movable pistons. When the associated door is opened, both of the pistons and the cylinder are moved relative to the housing to draw oil into the cylinder. Expulsion of oil from the cylinder through an orifice on closing of the door controls the closing movement.

REFERENCES:
patent: 3210796 (1965-10-01), Voester et al.
patent: 3259937 (1966-07-01), Kotikov

Affiliated with

Also associated with

Rating

Damper and method of controlling a door does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-147291