Fluent material handling – with receiver or receiver coacting mea – Filling means with receiver or receiver coacting means – With receiver and supply securing means
Patent
1995-03-14
1997-07-29
Jacyna, J. Casimer
Fluent material handling, with receiver or receiver coacting mea
Filling means with receiver or receiver coacting means
With receiver and supply securing means
141114, 141313, 410119, 137223, 137226, 383 66, 383904, B65D 3024
Patent
active
056514034
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a closure for sacks, bags and like containers with non-rigid walls, the containers to be pressurised and the closure comprising a filling nozzle with a valve (i.e., a tubular stub) and a separate flange having a cylindrical portion and a plate-shaped portion where said flange is adapted to be attached to the container through the plate-shaped portion.
BACKGROUND ART
Valves are known for sacks or bags to be pressurised, for instance with air, the valve comprising a flange and a threaded connection. The screwed connection has to be detached from the flange, if the valve is to be opened and tightened if the bag or sack is to maintain the air pressure. The valve per se can be further secured by means of a separate plug. Such valve constructions known inter alia from Swedish published specification No. 425.233 and PCT publication No. WO 91/10598.
SUMMARY OF THE INVENTION
The object of the invention is to provide a closure which is either opened or closed, and which closure can be completely opened by one single operation to obtain a high deflation rate and which closure equally can be closed by one single operation, so that the closure is either completely opened or completely closed both visibly and functionally.
The closure according to the invention is characterised in that the filling nozzle is hingedly connected to a lower portion which is adapted to be pivotally connected to the outer side of the cylindrical portion of the flange by means of a snap connection, and that the filling nozzle is adapted to be arranged in sealingly engagement with the flange by means of at least one snap connection. As a result, the filling nozzle is easy to secure to the flange, and from the flange it is easily caused to enter the closed or the completely open state. The pivotal securing implies that the filling nozzle can always be turned into a position in which it is easiest to handle, and the securing of the filling nozzle to the flange by means of a snap connection implies that the closure can be easily opened completely so as to allow a fast outflow of air from the sack or be closed for the filling in of air through the filling nozzle or be completely closed by means of a separate plug.
An embodiment of the closure according to the invention is characterised in that a seal is arranged between a valve holder placed in the filling nozzle and the interior face of the cylindrical portion of the flange. As a result, a suitable sealing compound may be used and the sealing portions are well-defined, for instance as a line seal or at large deformation of the sealing as a surface seal.
Moreover, according to the invention a protrusion for engagement with the flange at the transition between the cylindrical portion and the plate-shaped portion may be arranged on the valve holder of the filling nozzle, whereby the protrusion may be caused to interact with the flange when the closure is closed.
According to the invention, the position of the protrusion and of the snap connections may essentially define a plane intersecting a second plane essentially defined by the contact borders of the sealing ring to the valve holder and the flange, respectively. As a result, it is ensured that the sealing ring is always arranged at the same position in the cylindrical portion of the flange and that the protrusion together with the snap connection determine the position of the seal.
Furthermore, according to the invention the snap connection may comprise at least one snap hook arranged diametrally opposite the protrusion when seen in relation to the flange, whereby the point of engagement of the snap hook and that of the protrusion is arranged on opposite sides of the sealing.
Moreover, according to the invention the protrusion may abut an area of a circumferential recess provided in the flange between the cylindrical portion and the plate-shaped portion, whereby a more precise arrangement of the sealing ring is ensured. In addition, it is possible to turn the closure relative to the flange even when
REFERENCES:
patent: 3960281 (1976-06-01), Reeves
patent: 4073389 (1978-02-01), Angarola et al.
patent: 4146070 (1979-03-01), Angarola et al.
patent: 5111838 (1992-05-01), Langston
patent: 5367726 (1994-11-01), Chaffee
Bates Emballage A/S
Jacyna J. Casimer
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