An air return bulkhead may be removably mounted to the front wall of a cargo container such that the air return bulkhead is releasable and securable without the use of handheld tools. Accordingly, in various embodiments the bulkhead may be quickly and easily uninstalled and reinstalled so as to perm
An air return bulkhead may be removably mounted to the front wall of a cargo container such that the air return bulkhead is releasable and securable without the use of handheld tools. Accordingly, in various embodiments the bulkhead may be quickly and easily uninstalled and reinstalled so as to permit system maintenance, such removal of debris from a filter screen.
대표청구항▼
1. A method of using an air return bulkhead in a refrigerated trailer, comprising: releasably engaging the air return bulkhead with a plurality of mounting brackets coupled to a trailer wall by extending each of the mounting brackets through a corresponding slot in an offset portion of the bulkhead
1. A method of using an air return bulkhead in a refrigerated trailer, comprising: releasably engaging the air return bulkhead with a plurality of mounting brackets coupled to a trailer wall by extending each of the mounting brackets through a corresponding slot in an offset portion of the bulkhead positioned in an internal portion of the bulkhead, the internal portion of the bulkhead completely surrounding the offset portion, so that a peripheral flange portion of the bulkhead is urged against the trailer wall, the mounting brackets maintaining the bulkhead in an elevated position above a trailer floor;releasably engaging a face panel of the bulkhead with a strap that extends from the trailer wall, the face panel being coupled to the peripheral portion to define a plenum between the face panel and the trailer wall, and the strap being adjustable to urge the peripheral flange portion of the bulkhead toward the trailer wall, wherein the bulkhead is toollessly mounted to the trailer wall in the elevated position above the trailer floor using the strap and the mounting brackets; andmanually removing the bulkhead from the elevated position above the trailer floor without the use of handheld tools. 2. The method of claim 1, wherein the plurality of mounting brackets engage the bulkhead in a manner that compels the bulkhead against the trailer wall. 3. The method of claim 2, wherein each of the mounting brackets comprises an angled portion that extends from the trailer wall at an upward angle so that the peripheral flange portion of the bulkhead is increasingly compelled against the trailer wall as the bulkhead engages the mounting brackets. 4. The method of claim 1, wherein the bulkhead is removably mounted to the trailer wall in an orientation such that a lower panel portion of the bulkhead is substantially wider than an upper panel portion. 5. The method of claim 1, further comprising forming a seal between the peripheral flange portion and the trailer wall. 6. The method of claim 1, wherein the bulkhead defines one or more air return channels proximate to the trailer floor. 7. The method of claim 6, further comprising accessing a filter element coupled to the panel, the filter element being disposed in the plenum area and spaced apart from the air return channels proximate to the trailer floor. 8. The method of claim 1, wherein each of the mounting brackets comprises an angled portion that extends toward a tip portion offset from the trailer wall. 9. The method of claim 8, wherein the tip portion of each of the mounting brackets passes through the corresponding slot. 10. A method of installing an air return bulkhead on a trailer wall, comprising: providing the air return bulkhead comprising a peripheral flange portion to abut the trailer wall and a panel portion to be positioned generally parallel to and apart from the trailer wall to define an air return channel between the panel portion and the trailer wall when the air return bulkhead is in an installed condition, wherein the air return bulkhead includes a plurality of mounting apertures spaced apart from the trailer wall when the air return bulkhead is in the installed condition and wherein the air return bulkhead is manufactured of a resilient material;releasably engaging the mounting apertures with a plurality of inclined mounting brackets coupled to the trailer wall by extending each of the mounting brackets through a corresponding slot in an offset portion of the bulkhead positioned in an internal portion of the bulkhead, the internal portion of the bulkhead completely surrounding the offset portion, so that the panel portion of the air return bulkhead is pulled toward the trailer wall, thereby to urge the peripheral flange portion against the trailer wall, wherein the mounting brackets hold the air return bulkhead in an elevated position above a floor of the trailer; andreleasably engaging an upper region of the panel portion with a strap that extends from the trailer wall, the strap being adjustable to urge the peripheral flange portion of the air return bulkhead toward the trailer wall,wherein the air return bulkhead is toollessly mounted to the trailer wall in the elevated position above the floor of the trailer using the strap and the mounting brackets and without the use of fastening devices extending through the peripheral flange portion. 11. The method of claim 10, wherein the flange peripheral portion includes no apertures through which fasteners extend. 12. The method of claim 10, wherein the mounting apertures are disposed in one or more recessed regions of the panel portion. 13. The method of claim 12, wherein each of the recessed regions extends partially from the panel portion to the trailer wall when the air return bulkhead is in the installed condition. 14. The method of claim 10, wherein the air return bulkhead further includes a filter element disposed between the panel portion and the trailer wall. 15. The method of claim 14, further comprising removing the air return bulkhead by adjusting the straps and disengaging the air return bulkhead from the mounting brackets in order to clean the filter element, said step of removing being accomplished without actuation of a fastening device extending through the peripheral flange portion. 16. The method of claim 15, further comprising reinstalling the air return bulkhead by engaging the air return bulkhead with the mounting brackets and adjusting the straps, said step of reinstalling being accomplished without actuation of a fastening device extending through the flange portion. 17. The method of claim 10, wherein each of the mounting brackets includes a generally flat upwardly inclined surface to engage a corresponding slot. 18. The method of claim 1, wherein each of the offset portions of the bulkhead are positioned in the internal portion of the face panel of the bulkhead. 19. The method of claim 18, wherein the peripheral flange portion of the bulkhead forms a seal with the trailer wall. 20. The method of claim 18, wherein each of the offset portions of the bulkhead extend from the face panel towards the trailer wall. 21. The method of claim 18, wherein each of the offset portions of the bulkhead do not contact the trailer wall. 22. The method of claim 1, wherein each of the mounting brackets comprise an angled portion that extends from the trailer wall at an upward angle such that at least a portion of the bulkhead is maintained between the angled portion and the trailer wall.
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이 특허에 인용된 특허 (60)
Delatush John J. (Freehold NJ), Adjustable container bulkhead assembly.
Ziegler David B. ; Sirotek ; Jr. Robert L. ; Hotch Pat ; George Gregg ; Kiefer Kevin W. ; Gast Randal, Air return bulkhead for temperature controlled trailers.
Renken David J. (Minneapolis MN) Pfankuch Robert D. (Chanhassen MN) Bongaards Donald J. (Shorewood MN), Compartmentalized transport refrigeration system.
Kiefer Kevin W. (Prior Lake MN) Gast Randal W. (Jordan MN) Sirotek ; Jr. Robert L. (Apple Valley MN), Shipping crate and air return bulkhead for a transport refrigeration unit.
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