Cylinder type air damper with filter for storage box

Details Cylinder type air damper with filter for storage box Cylinder type air damper with filter for storage box

1988-03-01

1989-08-15

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Resistance alters relative to direction of thrust member

16 66, 55528, 18832217, 220371, 277 23, 312327, F16F 950, E05F 300, B01D 3904, B65D 5116

Patent

active

048566250

ABSTRACT:
A cylinder type damper device for damping the opening and closing movement of a storage box includes a cylinder member enclosing air therein, an end cap with a filter therein and a rod reciprocally movably inserted into the cylinder member and provided at its front end with a piston for dividing the interior of the cylinder member into a head chamber and a rod chamber. The rod is moved in association with an opening or closing movement of the storage box. The piston has an orifice formed throughout its entire length in the axial direction thereof and being for interchanging air in the head and rod chambers by the axial movement thereof and also has air holes formed likewise throughout its entire length in the axial direction thereof and provided with a check valve for blocking the interchanging of air between the head and rod chambers in accordance with one directional movement in the axial direction of the piston.

REFERENCES:
patent: 1543098 (1925-06-01), Carter et al.
patent: 3071800 (1963-01-01), Patriquin
patent: 3380110 (1968-04-01), Daugirdas et al.
patent: 4054152 (1977-10-01), Ito et al.
patent: 4275942 (1981-06-01), Steidl
patent: 4416445 (1983-11-01), Coad
patent: 4418799 (1983-12-01), Hart et al.
patent: 4585099 (1986-04-01), Taylor
patent: 4617858 (1986-10-01), Hachiro

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