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US 11,065,799 B2Granted
Adjustable venturi ring
AssigneeBrampton Engineering Inc.
InventorsRalph Brink, Laura Martin, Al-Amin Aziz, Winston Lewis, Gary Hughes
Life of this patent
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Abstract
An apparatus includes an upper lip positioned with respect to an air flow passage. The upper lip is to direct air flow from the air flow passage around a bubble of blown film. The apparatus further includes a Venturi ring movably mounted with respect to the upper lip and adjustable in position with respect to the upper lip. The Venturi ring is to adjustably lock the bubble of blown film.
Claims20
An apparatus comprising:
- a fixed upper lip positioned to define an air flow passage of fixed dimensions, the fixed upper lip to direct air flow from the air flow passage around a bubble of blown film;
- and
- a Venturi ring movably mounted with respect to the fixed upper lip and adjustable in position with respect to the fixed upper lip, the Venturi ring to adjustably lock the bubble of blown film.
An apparatus comprising:
- a fixed upper lip positioned with respect to an air flow passage, the fixed upper lip to direct air flow from the air flow passage around a bubble of blown film;
- and
- a Venturi ring positioned with respect to the fixed upper lip, the Venturi ring positioned at an outlet of the air flow passage, the Venturi ring to lock the bubble of blown film;
- wherein a position of the Venturi ring is independently adjustable with respect to a position of the fixed upper lip to change an angle of air flow against the bubble without altering a flow rate of air flow through the flow passage.
1 more element
Dependencies are inferred from the claim text.