ApplicationNo. 06/783304 filed on 10/02/1985
US Classes:248/284.1, Horizontal pivots188/70R, Axially and transversely movable362/427, Pivoted lamp or lamp support403/129, Spring biased segments403/146, Interposed spring means coaxial with pivot403/91Including pivot stud
ExaminersPrimary: Husar, Cornelius J.
Assistant: Knight, Anthony
Attorney, Agent or Firm
International ClassesF16M 11/02 (20060101)
F16M 11/10 (20060101)
F21V 21/30 (20060101)
F21V 21/14 (20060101)
AbstractApparatus is provided for adjustably supporting an object, such as a surgical light, between two points on a yoke-type frame. A housing having a cylindrical cavity and a threaded axial bore therethrough is secured to one of two hubs provided on the legs of the yoke. An adjustment screw having a face plate passes through the aperture. Wave washers and a spherical washer having a spherically concave friction surface are provided within the housing's cavity. A shaft is supported within the housing by a spherical bearing and terminates in a nut having a spherically convex friction surface. A keyway and recessed area on the shaft serve to secure the light to the shaft. The hub on the other leg is provided with a spherical bearing which supports a second shaft. The second shaft has a keyway and a recessed area which are engaged by a key and adjusting screw on a second mounting bracket in the opposite side of the light. As such, the axial force generated by the adjusting screw creates a force on, respectively, the face plate, wave springs and the spherical washer. Such axial force creates a frictional force between the mating surfaces of the spherical washer and nut thereby adjustably retaining the light.