A.Y. McDonald Patents
Virtual Patent Marking (US Patents)
The following products are protected by patents in the U.S.. This website is provided to satisfy the virtual patent marking provisions of various jurisdictions including the virtual patent marking provisions of the America Invents Act and provide notice under 35 U.S.C. §287 (a). The following list of products may be covered by one or more of the following U.S. Patents.
| DESCRIPTION | PATENT NUMBER | EXPIRATION DATE | PRODUCT/MODEL NUMBERS |
| Single Valve Bypass Meter Bar | US 11215491 B2 | 6/1/40 | Not Released Yet |
| Telescoping Meter Flange | US 10851924 B2 | 12/25/38 | 7E4602, 7E4604 & setters using them |
| US 11421805 B2 | 12/1/37 | ||
| Height Adjustable Meter Pit | US 10914048 B2 | 11/28/38 | L style adjustable 770 series (not all) |
| Compression Pipe Fittings with Wide Range Grip Rings | US 11635159 B2 | 4/20/38 | Ranger (-11) |
| US 11015748 B2 | 4/20/38 | ||
| US 12078267 B2 | 4/20/38 | ||
| Pipe Coupling Fitting w/Internal Spacer Sleeve | US 10323777 B2 | 7/22/37 | Fast Connect |
| Control Apparatus for a Water Powered Sump Pump | US 8920131 B2 | 3/25/35 | Guardian 747H |
| Pump Control and Method | US 8920131 B2 | 1/31/32 | 17044 & 17060 series boosters (Dual mode) |
| Universal Coupling and Parts | US 9383049 B2 | 5/2/31 | Cambridge Couplings |
| US 2012/0280486 A1 | 5/2/31 | ||
| Meter Bar | US 7584765 B2 | 1/16/28 | Vertical inlet Elbow (6569 series) |
| Bypass Meter Bar and Metering System | US 7347219 B2 | 4/3/26 | 6410 & 6722 |
| Angle Dual Check Valve | US 7185671 B2 | 7/16/25 | 712 Series Dual Checks |
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WARNING: It is unlawful in CALIFORNIA, VERMONT, MARYLAND, LOUISIANA and the UNITED STATES OF AMERICA to use any product in the installation or repair of any public water system or any plumbing in a facility or system that provides water for human consumption if the wetted surface area of the product has a weighted average lead content greater than 0.25%. This prohibition does not extend to service saddles used in California, Louisiana or under USA Public Law 111-380.