Extendable trays for use in conventional rural route mailboxes for facilitating the placement and removal of mail with respect thereto wherein the trays are constructed utilizing scored or integrally hinged sheet material which is selectively folded into a generally flat or planar configuration or package for shipping or distribution and which is assembled by a postal customer so as to be of a size and configuration to be cooperatively and slidingly received within a particular mailbox. In one form of the invention, the sheet material may be selectively folded into a number of sizes so that trays of varying dimensions may be formed from the same sheet of material.
申请公布号
US4753385(A)
申请公布日期
1988.06.28
申请号
US19860829899
申请日期
1986.02.18
申请人
BENEDICT ENGINEERING COMPANY, INC.
发明人
PHIPPS, COLIN S.;ARNETT, JOSEPH W.;THOMPSON, WILLIAM P.;BENEDICT, CHARLES E.