|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/254 ; 220/904 ; 220/355 ; 229/7R|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 49 인용 특허 : 2|
A drinking receptacle cover comprises two layers of a rigid resilient material which are circular in shape. An annular downwardly opening channel is formed at the periphery of the two layers which are snugly assembled. This channel receives the top rim portion of a drinking receptacle, and to secure the assembled relation the outer wall of the channel is formed with an inwardly extending bead which engages said rim portion. Both layers have an opening adjacent to the channel. This opening is normally closed by a valve which is generally of the same shape...
In a cover for a drinking receptacle having a lip operated valve, with the receptacle having an open top defined by a circular rim portion of the receptacle: a. two thin layers of a rigid resilient material of circular formation presenting a circular periphery and snugly assembled in a nested relation; b. a downwardly opening channel formed immediately adjacent to said periphery for receiving the rim portion of said receptacle; c. both of said layers being formed with an opening defined by a straight edge margin proximate the center of the cover divergin...