Apparatus for inspecting ventilation of filter cigarettes
AssigneeJapan Tobacco Inc.
InventorShinzo Kida
Life of this patent
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Abstract
An apparatus for inspecting ventilation of filter cigarettes FT has a plate-like packing 18a. The packing 18a covers the opening of a movable cylinder 10 and is relatively pressed with the end face of a filter cigarette FT. The packing 18a includes a hole 18c positioned to coincide with the center of the end face against the packing, an inner circular area 18f surrounding the hole 18c, and an outer circular area 18g surrounding the inner circular area 18f. The outer circular area 18g is elastically deformed more easily than the inner circular area 18f and is brought into tight contact with the outer circumferential edge of the end face pressed against the packing.
Claims8
An apparatus for inspecting ventilation of filter cigarettes, comprising:
- a fluid machine for producing pressure difference between both ends of a test-gas transmitting path including at least one end portion of a filter cigarette to be inspected;
- a measuring instrument provided on the transmitting path, for measuring a quantity of the test gas;
- a port provided in the transmitting path, for receiving the one end portion of the filter cigarette from one opening end of said port;
- and
- a plate-like packing covering another opening end of said port, for being pressed with the end face of the filter cigarette, the packing including a hole positioned in a center thereof, a flat inner circular area surrounding the hole, and a flat outer circular area surrounding the inner flat circular area, the flat outer circular area being elastically deformable more easily than the flat inner circular area, wherein, when a filter cigarette is inspected, the flat inner circular area of the plate-like packing is brought into surface contact with the end face of the filter cigarette, and the flat outer circular area of the plate-like packing is brought into tight contact with the outer circumferential edge of the end face of the filter cigarette.
An apparatus for inspecting ventilation of filter cigarettes, comprising:
- a fluid machine for producing pressure difference between both ends of a test-gas transmitting path including at least one end portion of a filter cigarette to be inspected;
- a measuring instrument provided on the transmitting path, for measuring a quantity of the test gas;
- a port provided in the transmitting path, for receiving the one end portion of the filter cigarette from one opening end of said port;
- and
- a plate-like packing covering another opening end of said port, for being brought into close contact and pressed with the end face of the filter cigarette, the packing including a hole positioned in a center thereof, a flat inner circular area surrounding the hole and a flat outer circular area surrounding the inner flat circular area, the flat outer circular area being elastically deformable more easily than the flat inner circular area, wherein, when a filter cigarette is inspected, the flat inner circular area of the plate-like packing is brought into surface contact with the end face of the filter cigarette, and the flat outer circular area of the plate-like packing is brought into tight contact with the outer circumferential edge of the end face of the filter cigarette for providing high sealing performance to reduce the force with which the packing is brought into close contact with the filter cigarette.
Dependencies are inferred from the claim text.