Patent 4399596 Issued on August 23, 1983. Estimated Expiration Date: November 2, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
A blank for erection into a coffin for the disposal of a human corpse is cut from a sheet of cardboard. It comprises a base (B) with ends pieces (C,D) and sides (E,F), the end pieces having lateral extensions (CC,DD), all integral yet separated by crease lines. The sides (E,F) have ends (e,f) cut into the adjacent extensions (CC,DD) at angles such as each to give an upright corner in the erected coffin. The extensions (CC,DD) are connected to the insides of the adjacent sides (E,F). A separate coffin lid fits down inside the coffin lid and rests on strengthening strips (A) adhering to the inside of the coffin. Depending upon configuration, the base and/or side pieces have free edges cut out in dove-tailed or mating segments for joining together the edges upon erection of the blank into the coffin.