The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 1979
Filed:
Sep. 16, 1977
Maw H Lee, Cincinnati, OH (US);
Barry V Prehodka, Cincinnati, OH (US);
Clopay Corporation, Cincinnati, OH (US);
Abstract
Improved traveler and guide rail apparatus for use with a garage door operator includes an elongated guide rail having a longitudinal screw channel and outwardly extending integral flanges disposed along the screw channel. An elongated T-shaped flange extends upwardly from the screw channel. An improved traveler apparatus for use with the guide rail includes a screw-driven traveler and a coupling traveler, each mounted on respective tracks formed by separate outside surfaces of the guide rail. The screw-driven traveler carries a nut engaging a screw in the screw channel through a slot between the flanges and further includes opposed U-shaped channels slidably mounted over the exterior surfaces of the guide rail flanges for slidable movement along the guide rail. The coupling traveler surrounds the screw-driven traveler and a substantial portion of the guide rail and includes a bore in an upper portion thereof, the bore having an interior surface slidably engaging the exterior surface of the screw channel for slidable movement along the guide rail. Upper shoulders of the coupling traveler above the bore are sufficiently close to the T-shaped flange to be guided thereby to prevent undesirable vertical or horizontal movement of the coupling traveler. Also, the coupling traveler is sufficiently relieved in the flange area to accommodate the screw-driven traveler therein. The coupling traveler is further provided with means for connecting it to a garage door, and carries a manually actuable bistable latch for selectively engaging and disengaging the coupling traveler with the screw-driven traveler for respective cooperative and independent slidable movement along the guide rail.