Humidifier pad
AssigneeB. D. Wait Co. Limited
InventorsRobert A. Wignall, Samuel Travale
Life of this patent
Estimating the term…
Abstract
A humidifier pad for use in humidifiers suitable for adding moisture to the air circulated by a forced air furnace is described together with its method of manufacture. A slab of open-cell foam is stamped using a reciprocating cutter to form humidifier pads which are seamless. These seamless pads are adapted to be fitted onto the cylindrical support frame of the humidifier and the pad is especially useful in a combination with a type of frame which is collapsible cylindrical and which facilitates removal and replacement of the pad.
Claims3
A seamless humidifier pad of formed synthetic plastic material, the pad comprising:
- a pair of similar side walls having rectangular shape and having inwardly facing surfaces in contact with one another across the entire surface;
- and
- a pair of rounded ends, each of the ends blending into and connecting opposite ends of the side walls to one another, the thickness of each of the rounded ends being a maximum at the junctions with the side walls and a minimum in a plane containing said surfaces, whereby upon deforming the pad by stretching the pad onto a cylindrical support, the pad exhibits a substantially uniform cylindrical outer surface.
Dependencies are inferred from the claim text.