Patent ID: 8769871
Filing Date: 2014-07-08
Classification: E05D,E05F,E05Y,E06B

Abstract:
1. A tilt-up door system for a building having an opening comprising: first and second juxtaposed members having upper and lower portions extending substantially vertically along opposite sides of the opening; first and second curved cam surfaces connected at one end to and extending generally laterally from respective ones of the first and second juxtaposed members at the upper portion thereof and having a second end; a door sized to span the opening having: first and second carriages each including a horizontally extending pivot shaft journal, each of the carriages being arranged for vertical movement along respective ones of the first and second juxtaposed members; a pair of horizontally extending pivot shafts, each pivot shaft pivotally connecting a pivot shaft tube to a pivot shaft journal; and at least one actuator connected to the first and second carriages operable to move the first and second carriages along respective ones of the first and second juxtaposed members; whereby when the door is placed in alignment with the opening in a closed, lowered position, the first and second carriages are positioned for vertical movement along respective ones of the first and second juxtaposed members and the first and second cam followers are in register with respective ones of the first and second cam surfaces, when the at least one actuator is operated to move the first and second carriages vertically along respective ones of the first and second juxtaposed members the first and second cam followers move along respective ones of the first and second cam surfaces to tilt the door to a generally horizontal position as the door is moved vertically upward by the first and second carriages.