Patents Examined by Machado Reinaldo P.
  • Roof ladder attachment
    Patent number: 4787478
    Abstract: A ladder attachment consisting of 2 pair of bars with holes, connecting rods, locknuts and washers to an extension ladder it forms a frame on the outsides of the ladder that can be adjustably extended over the ridge of a roof.The attachment allows the ladder to conform to the roof's pitch and be secured to the roof's ridge, or to stabilize the ladder against a wall or over the eve of the roof avoiding damage to the gutters.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: November 29, 1988
    Inventor: John W. Stakes, Jr.
  • X, Y, Z positioner
    Patent number: 4705252
    Abstract: A three-axis control for precisely and conveniently adjusting items such as irrors and lenses is disclosed. The adjuster apparatus includes a vertical stack of three rotatable adjusters. Rotation of the first effects vertical translation, whereas the second and third are eccentric assemblies which interact to effect movement along two angled axes perpendicular to the vertical axis.
    Type: Grant
    Filed: August 8, 1986
    Date of Patent: November 10, 1987
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: George F. Goers