|
The ornamental design for a tubing assembly unit for boilers for use in connection with combustion on pressurized fluidized beds, as shown. |
|||||||||||||||||
FIG. 1 is a top view of the tubing assembly unit of the present invention;
FIG. 2 is a right side view of the tubing assembly unit of the present invention;
FIG. 3 is a left side view of the tubing assembly unit of the present invention;
FIG. 4 is a bottom view of the tubing assembly unit of the present invention;
FIG. 5 is a front view of the tubing assembly unit of the present invention; and,
FIG. 6 is a rear view of the tubing assembly unit of the present invention.
| Patent | Priority | Assignee | Title |
| Patent | Priority | Assignee | Title |
| 4357907, | Oct 27 1980 | Rockwell International Corporation | Fluidized bed combustor with improved indirect heat exchanger units |
| 4770128, | Apr 05 1988 | THE BABCOCK & WILCOX POWER GENERATION GROUP, INC | Heat exchanger support |
| 4790267, | Dec 23 1986 | Deutsche Babcock Werke Aktiengesellschaft | Arrangement for burning fuels in a fluidized bed with an augmented solids circulation in a combustion chamber of a steam generator |
| D280545, | Jul 29 1982 | Nisshin Chemical Industry Co., Ltd. | Heat exchanger |
| D280547, | Jul 29 1982 | Nisshin Chemical Industry Co., Ltd. | Heat exchanger |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 22 1993 | ABB Carbon AB | (assignment on the face of the patent) | / | |||
| Aug 11 1993 | OSTMAN, SVEN-OLOV | ABB Carbon AB | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007125 | /0881 | |
| Jan 16 1998 | ASPEN PET PRODUCTS, INC | FLEET NATIONAL BANK, N A , AS AGENT | SEE RECORDING AT REEL 9187, FRAMW 0600 RE-RECORD | 009168 | /0900 | |
| Jan 16 1998 | ASPEN PET PRODUCTS, INC | FLEET NATIONAL BANK, N A AS AGENT | NOTICE OF COLLATERAL ASSIGNMENT OF PATENTS, RE-RECORD TO CORRECT THE RECORDATION DATE OF 05-15-1998 TO 02-09-1998, PREVIOUSLY RECORDED AT REEL 9168 FRAME 0900 | 009187 | /0600 | |
| Nov 21 2000 | FLEET NATIONAL BANK, AS AGENT | ASPEN PET PRODUCTS, INC | TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS | 011356 | /0122 |
| Date | Maintenance Fee Events |
| Date | Maintenance Schedule |