Motorized tilting window operator and window

A motorized tilting window operator for installation on a tilting window fitted with multiple manual tilting window operators spaced apart relative to each other and installed on a window frame of the tilting window, comprising:

• multiple motorized drive units spaced apart relative to each other, each motorized drive unit comprising:
• an electric motor;
• a drive unit connected to the electric motor, the drive unit comprising:
• a drive unit housing comprising a first drive unit housing and a second drive unit housing configured to releasably connect together, the drive unit housing having upper and lower longitudinal grooves;
• a drive shaft rotatably disposed within the drive unit housing along a longitudinal axis of the drive unit housing;
• a set of bearings provided on the drive shaft, each of said bearings being received within a corresponding recess provided within the drive unit housing;
• a worm installed on the drive shaft;
• a worm gear rotatably disposed within a through hole provided in the drive unit housing and in operational engagement with the worm, a rotational axis of the worm gear being oriented perpendicular relative to a rotational axis of the drive shaft and worm, the worm gear comprising a splined through hole for receiving a splined end of one of the manual tilting window operators, the splined through hole in the worm gear also being accessible through an access hole in the drive unit housing so that a hand tool can access and engage the splined through hole of the worm gear and rotate the worm gear to operate the one of the manual tilting window operators, the through hole of the drive unit housing confines and rotatably guides the worm gear and maintains the worm gear in the operational engagement with the worm;
• an electronic control connected to and controlling the motorized drive units to open or close the titling window;
• and
• a channel-shaped cover configured to removably connect to the drive unit housings and cover the drive units of the tilting window, the cover including upper and lower protrusions configured to snap fit into the upper and lower grooves of the drive unit housings to removably connect the cover to the drive units.

A motorized tilting window operator for installation on a tilting window having multiple tilting window sashes and multiple corresponding manual tilting window operators, the manual window operators spaced apart relative to each other and installed on a window frame of the tilting window, the motorized tilting window operator comprising:

• a first motorized drive unit connectable to one of the manual tilting window operators, the first motorized drive unit comprising a first housing having an upper longitudinal groove provided in an upper side surface of the first housing and a lower longitudinal groove provided in a lower side surface of the first housing;
• a second motorized drive unit connectable to another one of the manual tilting window operators, the second motorized drive unit comprising a second housing having an upper longitudinal groove provided in an upper side surface of the second housing and a lower longitudinal groove provided in a lower side surface of the second housing;
• an electronic control connected to and controlling the motorized drive units to open or close the tilting window sashes of the tilting window;
• and
• a channel-shaped cover configured to removably connect to and cover the motorized drive units of the tilting window, the cover including an upper inner surface having an downwardly extending protrusion and a lower inner surface having an upwardly extending protrusion, the protrusions of the cover being configured to snap fit into the upper and lower grooves of the first housing and the second housing to removably connect the cover to the drive units, the cover, the first housing, and the second housing being configured so that the upper side surface of each of the first housing and the second housing are located adjacent to the upper inner surface of the cover and the lower side surface of each of the first housing and the second housing are located adjacent to the lower inner surface of the cover when the cover is installed on the drive units,
• wherein each of the motorized drive units comprises an electric motor, a drive shaft, a worm and a worm gear,
• wherein for each of the drive units, the drive shaft is fitted with the worm which cooperates with the worm gear, each of the drive shafts and the worm gears being received within a respective one of the housings, and
• wherein each of the worm gears is provided with a splined through hole for receiving a splined end of a drive shaft of the respective manual tilting window operator.