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公开(公告)号：US3552474A
公开(公告)日：1971-01-05
申请号：US3552474D
申请日：1969-02-17
Applicant: JOHN E FINNEGAN
Inventor： FINNEGAN JOHN E
CPC classification number: E05D15/24 , E05D15/165 , E05Y2201/684 , E05Y2900/531 , Y10T16/3813
Abstract: An improved roller for supporting an overhead sliding door to a track, the roller comprising a diamond configurated roller element movable along a transversely configurated diamond track, the roller being mounted on a roller bearing at one end of a shaft fitted into a bracket plate and urged into longitudinal or axial adjustment by means of a back up compression spring.
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