|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||405/053; 220/567.1; 220/567.2|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 3 인용 특허 : 35|
An underground storage tank riser assembly comprises a riser member and at least one riser alignment spacer assembly. The riser member comprises an inferior riser end and an outer riser surface. The outer riser surface at the inferior riser end comprises a plurality of paired, optionally color-coded, curvilinear score indicia. The curvilinear score indicia enable a user to remove paired inferior end portions from the inferior riser end for forming a tank-engaging, saddle-shaped mouth at the inferior riser end. The saddle-shaped mouth comprises a vertical...
I claim: 1. A storage tank access system, the storage tank access system for enabling access to underground storage, the storage tank access system being cooperatively associated with an underground system-receiving cavity, the underground system-receiving cavity being spatially located intermediate inferior backfill material and a superior surface layer, the superior surface layer comprising a superior layer surface, an inferior layer surface, and a surface layer thickness, the surface layer thickness extending intermediate the superior and inferior la...