IP Library Granted Patent US 7,475,910
Granted Patent B1
US 7,475,910 · App. 11/113,284 · Granted Jan 13, 2009

Container having internal bulkhead

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Quick Facts
Patent No.
US 7,475,910
App. No.
11/113,284
Granted
Jan 13, 2009
Kind
B1
Abstract

A container assembly for a container trailer includes a generally cylindrical elongate container with a bulkhead mounted internally within the container. The bulkhead comprises a non-flanged curved plate having a curve of constant radius, and it includes a horizontally-oriented stiffening rib. The trailer also includes a structural frame which supports all or a portion of the container, a plurality of axles and a suspension system.

Claims (55)

1. A container trailer comprising:

(a) a generally cylindrical elongate container;

(b) a bulkhead mounted internally within the container, said bulkhead:

(i) having a width;

(ii) having a height;

(iii) comprising a plate which does not comprise a portion of a sphere and which includes no peripheral flange, said plate having a curve of constant radius across its width;

(iv) including a horizontally-oriented stiffening rib;

(c) a structural frame which:

(i) supports all or a portion of the container;

(ii) includes a plurality of axles and a suspension system therefor.

2. The container trailer of claim 1 wherein the radius of the curve across the width of the bulkhead is within the range of 90-95% of the width of the bulkhead.

3. The container trailer of claim 1 wherein:

(a) the bulkhead is generally elliptical;

(b) the minor radius is within the range of 30-50% of the major radius.

4. The container trailer of claim 1 wherein the horizontally-oriented stiffening rib is formed in the bulkhead.

5. The container trailer of claim 4 wherein the horizontally-oriented stiffening rib has:

(a) a length;

(b) a depth;

(c) a radius at the center of its length that is within the range of 1-2 times its depth at the center of its length.

6. A container trailer comprising:

(a) a generally cylindrical elongate container;

(b) a bulkhead mounted internally within the container, said bulkhead comprising a plate which comprises a segment of a cylinder, said plate:

(i) having no peripheral flange;

(ii) including a horizontally-oriented stiffening rib;

(c) a structural frame which:

(i) supports all or a portion of the container;

(ii) includes a plurality of axles and a suspension system therefor.

7. The container trailer of claim 6 wherein:

(a) the bulkhead has a width;

(b) the bulkhead has a height;

(c) the radius of the curve of the bulkhead across its width is within the range of 90-95% of the width of the bulkhead.

8. The container trailer of claim 6 wherein:

(a) the bulkhead is generally elliptical;

(b) the minor radius is within the range of 30-50% of the major radius.

9. The container trailer of claim 6 wherein the horizontally-oriented stiffening rib is formed in the bulkhead.

10. The container trailer of claim 6 wherein the horizontally-oriented stiffening rib has:

(a) a length;

(b) a depth;

(c) a radius at the center of its length that is within the range of 1-2 times its depth at the center of its length.

11. A container trailer comprising:

(a) an elongate container;

(b) a bulkhead mounted internally within the container, said bulkhead:

(i) having a width;

(ii) having a height;

(iii) comprising a plate with no peripheral flange, said plate having a curve of constant radius across its width and no curve across its height;

(iv) including a horizontally-oriented stiffening rib;

(c) a structural frame which:

(i) supports all or a portion of the container;

(ii) includes a plurality of axles and a suspension system therefor.

12. The container trailer of claim 11 wherein the radius of the curve across the width of the bulkhead is within the range of 90-95% of the width of the bulkhead.

13. The container trailer of claim 11 wherein the horizontally-oriented stiffening rib is formed in the bulkhead.

14. The container trailer of claim 13 wherein the horizontally-oriented stiffening rib has:

(a) a length;

(b) a depth;

(c) a radius at the center of its length that is within the range of 1-2 times its depth at the center of its length.

Assignments (19)
RELEASE OF SECURITY INTEREST Recorded Mar 17, 2025
From: ALLY BANK, AS COLLATERAL AGENT
To: ENTRANS INTERNATIONAL, LLC; SERVA CORPORATION; HEIL TRAILER INTERNATIONAL, LLC; SERVA GROUP LLC; POLAR, LLC; POLAR TANK TRAILER, LLC; SG HOLDINGS I LLC
Reel/Frame 070534/0650 →
RELEASE OF SECURITY INTEREST Recorded Jun 1, 2022
From: BARCLAYS BANK PLC, AS COLLATERAL AGENT
To: ENTRANS INTERNATIONAL, LLC; SERVA CORPORATION; HEIL TRAILER INTERNATIONAL, LLC; SERVA GROUP LLC; POLAR, LLC; POLAR TANK TRAILER, LLC; SG HOLDINGS I LLC
Reel/Frame 060077/0515 →
SECURITY AGREEMENT Recorded May 31, 2022
From: ENTRANS INTERNATIONAL, LLC; SERVA CORPORATION; HEIL TRAILER INTERNATIONAL, LLC; SERVA GROUP LLC; POLAR TANK TRAILER, LLC; SG HOLDINGS I LLC; POLAR, LLC
To: ALLY BANK, AS COLLATERAL AGENT
Reel/Frame 060243/0776 →
RELEASE OF SECURITY INTEREST Recorded May 25, 2022
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
To: ENTRANS INTERNATIONAL, LLC; SERVA CORPORATION; HEIL TRAILER INTERNATIONAL, LLC; SERVA GROUP LLC; POLAR, LLC; POLAR TANK TRAILER, LLC; PSC CUSTOM, LLC; SG HOLDINGS I LLC
Reel/Frame 060010/0951 →
SECURITY INTEREST Recorded Nov 2, 2018
From: ENTRANS INTERNATIONAL, LLC; SERVA CORPORATION; HEIL TRAILER INTERNATIONAL, LLC; SERVA GROUP LLC; POLAR, LLC; POLAR TANK TRAILER, LLC; PSC CUSTOM, LLC; SG HOLDINGS I LLC
To: CREDIT SUISSE, AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 047390/0522 →
SECURITY INTEREST Recorded Nov 2, 2018
From: ENTRANS INTERNATIONAL, LLC; SERVA CORPORATION; HEIL TRAILER INTERNATIONAL, LLC; SERVA GROUP LLC; POLAR, LLC; POLAR TANK TRAILER, LLC; PSC CUSTOM, LLC; SG HOLDINGS I LLC
To: BARCLAYS BANK PLC, AS COLLATERAL AGENT
Reel/Frame 047397/0048 →
RELEASE OF SECURITY INTEREST Recorded Nov 1, 2018
From: ALLY BANK
To: HEIL TRAILER INTERNATIONAL, LLC; SERVA CORPORATION; SERVA GROUP LLC
Reel/Frame 047387/0750 →
RELEASE OF SECURITY INTEREST Recorded Jun 5, 2015
From: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT (FIRST LIEN 2014)
To: HEIL TRAILER INTERNATIONAL, CO.
Reel/Frame 035796/0505 →
RELEASE OF SECURITY INTEREST Recorded Jun 5, 2015
From: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT (SECOND LIEN 2014)
To: HEIL TRAILER INTERNATIONAL, CO.
Reel/Frame 035796/0468 →
RELEASE OF SECURITY INTEREST Recorded Jun 5, 2015
From: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT (FIRST LIEN 2011)
To: HEIL TRAILER INTERNATIONAL, CO.
Reel/Frame 035796/0550 →
RELEASE OF SECURITY INTEREST Recorded Jun 5, 2015
From: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT (SECOND LIEN 2011)
To: HEIL TRAILER INTERNATIONAL, CO.
Reel/Frame 035796/0606 →
SECURITY INTEREST Recorded Jun 5, 2015
From: HEIL TRAILER INTRNATIONAL, LLC; SERVA CORPORATION; SERVA GROUP LLC
To: CORTLAND CAPITAL MARKET SERVICES LLC, AS AGENT
Reel/Frame 035834/0157 →
SECURITY AGREEMENT Recorded Jun 5, 2015
From: HEIL TRAILER INTERNATIONAL, LLC; SERVA CORPORATION; SERVA GROUP LLC
To: ALLY BANK, AS AGENT
Reel/Frame 035836/0989 →
CHANGE OF NAME Recorded May 15, 2015
From: HEIL TRAILER INTERNATIONAL, CO.
To: HEIL TRAILER INTERNATIONAL, LLC
Reel/Frame 035685/0821 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 17, 2012
From: THE HEIL COMPANY
To: HEIL TRAILER INTERNATIONAL, CO.
Reel/Frame 027540/0474 →
SECURITY AGREEMENT Recorded Jan 3, 2012
From: HEIL TRAILER INTERNATIONAL, CO.
To: U.S. BANK NATIONAL ASSOCIATION (AS COLLATERAL AGENT FOR FIRST LIEN)
Reel/Frame 027468/0738 →
SECURITY AGREEMENT Recorded Jan 3, 2012
From: HEIL TRAILER INTERNATIONAL, CO.
To: U.S. BANK NATIONAL ASSOCIATION (AS COLLATERAL AGENT FOR SECOND LIEN)
Reel/Frame 027468/0754 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 4, 2006
From: DELAWARE CAPITAL FORMATION, INC.
To: THE HEIL COMPANY
Reel/Frame 017418/0427 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 25, 2005
From: CALONGE, JOE; MCCLOUD, TRAVIS S.
To: DELAWARE CAPITAL FORMATION, INC.
Reel/Frame 016510/0377 →