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US 4,538,788 AGranted
Valve mechanism for can filling machines
AssigneeElmar Industries, Inc.
InventorEverett S. Minard
Life of this patent
Estimating the term…
Abstract
A valve mechanism for positive displacement, rotary receptacle filling machines having vertically movable valve stems operable by fixed cam tracks employs cam followers pivoted on the valve stems for movement in a vertical plane and horizontally settable means for locking them against such movement.
Claims1
A valve mechanism for filling machines comprising:
- a valve stem movable along a substantially vertical axis and having an upper portion presenting a substantially horizontal upper surface,
- a cam follower including a roller and a roller mounting plate presenting a substantially horizontal upper surface pivotally mounted for movement in a substantially vertical plane on said valve stem;
- said horizontal surfaces lying in substantially the same plane in their lowermost positions, and
- means for locking said cam follower plate against such pivotal movement including
- a member pivotally mounted on said valve stem for selective movement in a substantially horizontal plane into or away from a position overlying said upper surface of said roller mounting plate.
2 more elements
Dependencies are inferred from the claim text.