Automatic draining back flow prevention device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11788264
APP PUB NO 20230058099A1
SERIAL NO

17929818

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A double check valve is provided that includes an in-line inlet check valve and an outlet check valve that cooperate to prevent back flow of fluid through the valve. The check valve also includes at least one vent that allows for fluid trapped within the check valve to drain, thereby preventing freezing of the check valve and hydrant to which it is interconnected. The check valve provided omits many superfluous components and thus is smaller and easier to install than check valves of the prior art.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
WCM INDUSTRIES INCCOLORADO SPRINGS CO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ball, William T Colorado Springs, US 211 3813
Pilarczyk, Eric Colorado Springs, US 97 816

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
3.5 Year Payment $1600.00 $800.00 $400.00 Apr 17, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Apr 17, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 17, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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