Patent ID: 11858734
Assignee: nan
Field: Environmental technology (Chemistry)
Classification: CPC B | IPC B

Claim 2:
3. A trash can for mounting a trash bag therein, comprising:
a tubular shell having an upper end defining a top opening, a lower end and a receiving cavity defined therein for receiving the trash bag therein;
a base mounted to said lower end of the shell;
a foot pedal pivotally coupled at a side of said base;
a lid assembly, comprising:
a retainer rim, having a predetermined outer size and a rim opening, pivotally coupled to said shell is such a manner that said retainer rim is able to be selectively moved to site on an upper edge of said shell while said rim opening is communicating with said receiving cavity through said top opening of said shell or pivotally lifted up from said upper edge of said shell, wherein said retainer rim has a top ring surface and a circular sealing slot indented in said top ring surface and extended around said rim opening, and
a lid pivotally mounted to said shell and configured to selectively move between an open state and a close state, wherein an outer size of said lid is the same as said predetermined outer size of said retainer rim, such that in the close state, said lid fittingly sits on said retainer rim to cover said rim opening of said retainer rim and said top opening of said shell while a bottom surface of said lid seats on said top ring surface of said retainer rim and an outer surrounding side of said lid is aligned with an outer annular wall of said retainer rim, wherein said lid has a circular ridge protruded on said bottom surface of said lid and sized and shaped to engage with said sealing slot to form a sealing arrangement;
a link assembly coupling said foot pedal to said lid in such a manner that said lid is able to be lifted up pivotally from said retainer rim to said open state in response to a pressing force applied to said foot pedal, wherein in said open state, said lid is pivotally lifted up to have an included angle of 90 degrees or less from said retainer rim sited on said upper of said shell, and said lid falls back to said close state when the pressing force applied to said foot pedal is released, wherein a retaining gap is formed between said link assembly and said upper edge of said shell for a respective portion of the opening portion of said trash bag to be folded and retained therein; and
a transition arrangement coupled with said lid of said lid assembly that enables said lid to be selectively transited between a normal state and a transition state, wherein in said normal state, said lid is operable between said open state and said close state through said foot pedal, wherein when said lid is pivotally lifted up to have said included angle larger than 90 degrees, said lid is in said transition state and would not fall back toward said retainer rim, such that said receiving cavity is remained opened through said top opening of said shell and said rim opening of said retainer rim, and that said retainer rim is able to be pivotally lifted up to rest against said lid for replacing the trash bag in said shell and inverting an opening portion of the trash bag over said upper edge of said shell until said retainer rim is moved back to site on said upper edge of said shell to sandwich the opening portion of the trash bag between said upper edge of said shell and said retainer rim.