Patent ID: 7017974

Claim:
A cover arrangement for a rotary door operator for opening and closing a door of a transit vehicle door system, said rotary door operator having a mounting bracket with a first surface portion for attachment to a structure of such transit vehicle and a second surface portion, a drive cylinder enabled by a source of fluid pressure, an output shaft connected to a piston of said drive cylinder for reciprocal movement therewith, said cover arrangement comprising: (a) a cover having a cavity for encasing at least a portion of said rotary door operator, said cavity disposed adjacent such structure of such transit vehicle, at least one mounting cavity for attachment to said second surface portion of said mounting bracket for ease of attachment and removal, and an output shaft aperture; and (b) a first seal means of a predetermined material and of a first predetermined thickness having a perimeter groove disposed within said first predetermined thickness for capturing an edge of said output shaft aperture, said perimeter grove is formed by a pair of side wall surfaces and a bottom wall surface.