Patent ID: 7685679
Filing Date: 2010-03-30
Classification: E05D,E05Y,G06F,Y10T

Abstract:
1. A pivotal hinge with an oil-retaining collar having a shaft having a rotating bracket being mounted securely on the distal end of the fastening rod; a stationary bracket being mounted around the extension rod and having multiple washers being mounted around the extension rod and each having a stationary positioning spacer being mounted around the extension rod adjacent to one of the washers and having a rotating positioning spacer being mounted around the extension rod adjacent to the stationary positioning spacer and having a biasing member being mounted around the extension rod adjacent to the rotating positioning spacer; a nut being screwed onto the fastening thread on the extension rod; and an oil-retaining collar being mounted around the washers and the positioning spacers and having two edges each having a long hook protruding from the edge of the oil-retaining collar, each said long hook being mounted between the stationary bracket and the stationary positioning spacer and around the washers.