Door closer

Details Door closer Door closer

1990-10-11

1992-12-15

Seidel, Richard K.

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

Checks and closers

Liquid

188316, 16 57, 16DIG9, E05F 310

Patent

active

051705303

ABSTRACT:
A door closer of the kind which acts between a door hinge stile and a hinge jamb has a body for mounting usually in the stile, and from the body a spring-biased tension member extends for anchoring to the jamb. A hydraulic cylinder piston damper is interposed between the tension member and its biasing spring, the damper incorporating no unidirectional valve means and instead its piston being undersized relative to the cylinder by an amount predetermined by the viscosity of hydraulic fluid in the damper so as to allow fluid to flow restrictedly around the piston when the tension member is moved in door-closing and door-opening directions.

REFERENCES:
patent: 897825 (1908-09-01), Flynn
CRC Handbook of Chemistry and Physics, Forty-eighth edition, 1967-68. pp. F-33, F-38, F-3.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2084903