HVAC systems and methods with improved heat exchangers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9714775
APP PUB NO 20150377512A1
SERIAL NO

14315251

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Systems, tools, and methods are presented that enable a plurality of turbulators to enhance heat transfer within a heat exchanger of a heating, ventilating, and air conditioning (HVAC) system. The plurality of turbulators each include a ribbon member having a variable pattern formed over a length. In one instance, the variable pattern of the ribbon member includes a plurality of bends defining intervals of alternating pitch. The intervals progressively increase in dimension as the ribbon member is traversed over the length. In another embodiment, the intervals contain apertures whose area increases as the length is traversed. Other systems, tools and methods are presented.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
LENNOX INDUSTRIES INC2140 LAKE PARK BLVD RICHARDSON TX 75080

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Burmania, Ian Carrollton, US 14 38
Kowald, Glenn W Carrollton, US 39 242
Muley, Kirankumar Maharashtra, IN 1 1
Sahu, Kapil Chennai, IN 3 6
Swornalatha, Ajay C P Tamilnadu, IN 1 1
Whitesitt, John Carrollton, US 1 1
Zimmer, Donald Carrollton, US 1 1

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Jan 25, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 25, 2029
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00