US 12,495,469 B2
Modular platform electric trench heater
Brett Starr, Michigan City, IN (US); Brian Lynn, Michigan City, IN (US); Andrew J. Martin, Chicago, IL (US); and Patrick A. von zur Muehlen, Valparaiso, IN (US)
Assigned to The Marley Company LLC, Burr Ridge, IL (US)
Filed by The Marley Company LLC, Burr Ridge, IL (US)
Filed on Aug. 29, 2023, as Appl. No. 18/458,025.
Application 18/458,025 is a continuation of application No. 16/797,579, filed on Feb. 21, 2020, granted, now 11,743,974.
Prior Publication US 2024/0114600 A1, Apr. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H05B 3/60 (2006.01); H05B 1/02 (2006.01); H05B 3/14 (2006.01); H05B 3/84 (2006.01)
CPC H05B 3/60 (2013.01) [H05B 3/84 (2013.01); H05B 1/0202 (2013.01); H05B 3/141 (2013.01); H05B 3/148 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A modular platform electric trench heater, comprising:
a case having a first end and a second end;
an electrical heating unit disposed in the case and designed to generate heat and create an upward convection current therethrough;
a baffle dividing the case in a longitudinal direction into a first portion and a second portion, wherein the baffle is designed to direct the upward convection current from the first portion of the case to the second portion of the case; and
a connecting unit provided in the form of a connecting plate and a plate fixing mechanism that couples the connecting plate to the first end of the case.