|
PTO
Wrapper
PDF
|
|
Dossier
Espace
Google
|
|
|
|
Patent
D574938
|
|
Priority
Apr 26 2007
|
|
Filed
Apr 26 2007
|
|
Issued
Aug 12 2008
|
|
Expiry
Aug 12 2022
|
|
|
|
Assg.orig
|
|
|
|
Entity
unknown
|
|
7
|
|
30
|
|
n/a
|
|
|
|
The ornamental design for a heat exchanger, as shown and described.
|
FIG. 1 is a perspective view of a heat exchanger showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
Li, Gang, Martin, David, Schardt, David L.
| Patent |
Priority |
Assignee |
Title |
| 11225807, |
Jul 25 2018 |
HAYWARD INDUSTRIES, INC |
Compact universal gas pool heater and associated methods |
| 11649650, |
Jul 25 2018 |
Hayward Industries, Inc. |
Compact universal gas pool heater and associated methods |
| 12110707, |
Oct 29 2020 |
HAYWARD INDUSTRIES, INC |
Swimming pool/spa gas heater inlet mixer system and associated methods |
| 7971603, |
Jan 26 2007 |
HAYWARD INDUSTRIES, INC |
Header for a heat exchanger |
| 9353998, |
Jan 26 2007 |
Hayward Industries, Inc. |
Header for a heat exchanger |
| D936193, |
Jun 30 2020 |
|
Water heat exchanger |
| D936194, |
Sep 09 2020 |
|
Water heat exchanger |
| Patent |
Priority |
Assignee |
Title |
| 1742362, |
|
|
|
| 176964, |
|
|
|
| 2259433, |
|
|
|
| 3568764, |
|
|
|
| 3840175, |
|
|
|
| 4257479, |
Apr 02 1979 |
ACRO ENERGY CORPORATION |
Heat exchanger and drain down for solar collector |
| 4595825, |
Jun 18 1984 |
PUREX POOL SYSTEMS, INC |
Thermostatically controlled electric water heater |
| 4907418, |
Nov 14 1988 |
|
Liquid heating system particularly for use with swimming pools or the like |
| 5201307, |
Nov 07 1991 |
PUREX POOL SYSTEMS, INC |
Insulated firebox for swimming pool or spa heaters for reduction of smoke or odor |
| 5216743, |
May 10 1990 |
|
Thermo-plastic heat exchanger |
| 5228618, |
Nov 26 1991 |
PUREX POOL SYSTEMS, INC |
Thermal and flow regulator with integrated flow optimizer |
| 5318007, |
Sep 12 1991 |
Pentair Pool Products, INC |
Heat exchanger manifold for swimming pool or spa heaters |
| 5487423, |
Feb 16 1993 |
Piscine Service Anjou SA |
Heat exchanger |
| 556630, |
|
|
|
| 5775267, |
Aug 26 1996 |
HOU, LIANG-YU |
Instant hot water boiler structure |
| 5802864, |
Apr 01 1997 |
PEREGRINE INDUSTRIES, INC |
Heat transfer system |
| 6026804, |
Dec 28 1995 |
HAYWARD INDUSTRIES, INC |
Heater for fluids |
| 6082993, |
May 28 1999 |
HAYWARD INDUSTRIES, INC |
Induced draft heater with premixing burners |
| 6293335, |
Jun 24 1999 |
AquaCal, Inc. |
Method and apparatus for optimizing heat transfer in a tube and shell heat exchanger |
| 6295980, |
Jan 12 2000 |
Pentair Pool Products, INC |
Composite polymer manifold for water heating unit |
| 6321833, |
Oct 15 1999 |
HAYWARD INDUSTRIES, INC |
Sinusoidal fin heat exchanger |
| 6499534, |
Feb 15 2002 |
AquaCal |
Heat exchanger with two-stage heat transfer |
| 753250, |
|
|
|
| 20020157815, |
|
|
|
| 20030209345, |
|
|
|
| D264500, |
Oct 22 1979 |
|
Heat retrieval unit |
| D265236, |
Apr 23 1979 |
Produtos Eletricos Corona Ltda. |
Electric water heater |
| D397191, |
Nov 13 1996 |
Sta-Rite Industries, Inc. |
Pool and spa water heater |
| D412567, |
Sep 12 1997 |
Donaldson Company, Inc |
Housing for an air cleaner |
| JP60048496, |
|
|
|
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Apr 26 2007 | | Hayward Industries, Inc. | (assignment on the face of the patent) | | / |
| Jul 18 2007 | MARTIN, DAVID, MR | H-TECH, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 019836 | /0814 |
pdf |
| Jul 23 2007 | LI, GANG, MR | H-TECH, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 019836 | /0844 |
pdf |
| Aug 12 2007 | SCHARDT, DAVID L , MR | H-TECH, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 019836 | /0800 |
pdf |
| Dec 19 2007 | H-TECH, INC | HAYWARD INDUSTRIES, INC | MERGER SEE DOCUMENT FOR DETAILS | 020362 | /0622 |
pdf |
| Aug 04 2017 | HAYWARD INDUSTRIES, INC | BANK OF AMERICA, N A , AS COLLATERAL AGENT | FIRST LIEN PATENT SECURITY AGREEMENT | 043796 | /0407 |
pdf |
| Aug 04 2017 | HAYWARD INDUSTRIES, INC | BANK OF AMERICA, N A , AS COLLATERAL AGENT | SECOND LIEN PATENT SECURITY AGREEMENT | 043790 | /0558 |
pdf |
| Aug 04 2017 | HAYWARD INDUSTRIES, INC | BANK OF AMERICA, N A , AS COLLATERAL AGENT | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 043812 | /0694 |
pdf |
| Mar 19 2021 | BANK OF AMERICA, N A , AS COLLATERAL AGENT | GSG HOLDINGS, INC | RELEASE OF PATENT SECURITY INTEREST SECOND LIEN | 056122 | /0218 |
pdf |
| Mar 19 2021 | BANK OF AMERICA, N A , AS COLLATERAL AGENT | HAYWARD INDUSTRIES, INC | RELEASE OF PATENT SECURITY INTEREST SECOND LIEN | 056122 | /0218 |
pdf |
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a