Use a blade guard, not a blade cover.
Original-Mount Brett-Guard® Saw Guards for Table Saws
Brett-Guard Table Saw Guards are designed for craftsmen who want quality, function and performance, without sacrificing safety and flexibility. Brett-Guard systems are exceptionally effective and easy to use. They are designed to overcome the objection "We can't guard that operation".
The original Brett-Guard Model 12A-L provides excellent protection, in a package ideally suited to contractor-style saws -- although it works great on cabinet saws too! Easy adjust crank housing, clear shield with retractable anti-kick fingers, and hold down capabilities make the original Brett-Guard a "safe" choice.
Left, rear mount