Pneumatic damper

Details Pneumatic damper Pneumatic damper

1986-03-10

1987-11-24

Rowan, Kurt

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

Checks and closers

Pneumatic

E05F 300

Patent

active

047078820

ABSTRACT:
A pneumatic damper for particular use as a door closer comprising a cylinder closed at one end having a piston axially slidable therein to define a pressurizable chamber between the piston and the closed end of the cylinder, the piston having a mechanism to allow air to flow past the piston when the piston slides axially away from the closed end and to prevent airflow past the piston as the piston moves towards the closed end, an elongate arm secured to the piston to extend out of the cylinder, the arm being displaceable to cause the piston to slide within the cylinder and an adjustable airflow control on the wall of the cylinder at a selected position to allow variation of flow of air between the piston and cylinder wall at the selected position, to cause, in use, a sudden reduction in the air pressure within the chamber.

REFERENCES:
patent: 1528195 (1925-03-01), Bush
patent: 2091904 (1937-08-01), Baumann
patent: 2453956 (1948-11-01), Angell
patent: 3059269 (1962-10-01), Selinger
patent: 3083399 (1963-04-01), Moran
patent: 3708826 (1973-01-01), Larson
patent: 4230309 (1980-10-01), Schnitzius
patent: 4382311 (1983-05-01), Watts

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2420715