A truck trailer or similar bulk storage area is heated by providing electrical resistance heaters in longitudinally-extending metal ducts extending from and to a short distance below the floor level. Electrical sheet resistance heaters are attached to the underside of the metal plate forming the duct top, each duct is placed between a longitudinally-extending pair of wooden floor boards, and a pair of ducts are placed side-by-side near each edge of the trailer bed or floor of the storage area.
申请公布号
US5038018(A)
申请公布日期
1991.08.06
申请号
US19890411703
申请日期
1989.09.25
申请人
FLEXWATT CORPORATION
发明人
GRISE, FREDERICK G. J.;BODENSIEK, PAUL H.;MORGAN, LAWRENCE;MAIKANTIS, DEMETRIUS;MARSTILLER, JOHN A.