US Patent 9113733 Ventilation cup lid

A ventilation cup lid includes a lid, a sealing portion to mount the lid onto a cup and an orifice sealing member located on the lid. The lid has a drinking orifice, a severed coupling portion extended from the lid to the drinking orifice, and a wedge notch. The orifice sealing member includes a cover sheet, a protrusive latch portion located at one side of the cover sheet remote from the cup, and a bent connecting section to bridge the cover sheet and lid. The cover sheet and lid are interposed by a ventilation gap. The severed coupling portion strides the ventilation gap to connect to the cover sheet. The ventilation gap forms an exit to release thermal pressure and enhance heat dissipation efficacy. The force applied by users to push the protrusive latch portion to open the cover sheet and expose the drinking orifice also is reduced.