Patents Assigned to American Optical Corporation
  • Microscope eyeshield
    Patent number: 4307931
    Abstract: A microscope eyeshield of flexible material has internal ribs of different diameters. Small diameter ribs frictionally engage small diameter eyepieces while the larger diameter ribs are for larger diameter eyepieces. A groove adjacent each small diameter rib permits the respective small diameter rib to be displaced into the groove when the eyeshield is fitted to a larger diameter eyepiece.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: December 29, 1981
    Assignee: American Optical Corporation
    Inventor: Charles S. Blake
  • Method of fitting ophthalmic lenses in spectacles frames
    Patent number: 4300317
    Abstract: Glazing spectacles frames with correction of attending lens rim distortions by measuring the inner perimeter of the rims and edging the lenses to the measured perimetric size and proper pattern shape. Insertion of the edge lenses into the measured lens rims will cause the rims to conform to the edged lens profile and correct preexistent rim distortions.
    Type: Grant
    Filed: January 10, 1980
    Date of Patent: November 17, 1981
    Assignee: American Optical Corporation
    Inventors: George T. Croft, Rato R. Buhler
  • Spectacles lens-frame fitting coordinator
    Patent number: 4299032
    Abstract: A device for use in determining the minimum size of ophthalmic lens blank which may be made to fit a desired spectacles frame or the largest frame for a given lens blank size.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: November 10, 1981
    Assignee: American Optical Corporation
    Inventor: John M. Young
  • Hydrophilic silicone compounds and contact lenses containing polymers thereof
    Patent number: 4294974
    Abstract: Homopolymers and copolymers of compounds according to the formula: ##STR1## wherein R is an alkyl having 1 to 3 carbons, a+b+c+d=e, b=O to e, c=O to e, b+c>1, d=0 to 5, e=1 to 100, and Y is an organic group containing at least one>C.dbd.C<are hydrophilic as well as exhibiting properties similar to silicone compounds. The polymers are particularly useful in contact lenses having enhanced oxygen permeability.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: October 13, 1981
    Assignee: American Optical Corporation
    Inventor: Albert R. LeBoeuf
  • Aerosol filter cartridge
    Patent number: 4294599
    Abstract: An aerosol respirator cartridge employing a prefilter having the form of a closely spiraled fiberglass mat functioning to distribute captured aerosol particles substantially uniformly therethrough for avoidance of prior art aerosol skin affect and the accompanying increased inhalation resistance.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: October 13, 1981
    Assignee: American Optical Corporation
    Inventors: William R. Grovesteen, John A. Jones
  • Lens surfacing pad
    Patent number: 4291508
    Abstract: A cutaway pad for surfacing lenses with grinding or polishing slurries which flow into and along the cuts for distribution across a lens surface worked thereover. The heretofore pad floppiness is relieved with a continuous film backing which is readily conformable to a surfacing tool face and affords large area contact to prevent pad slippage during lens surfacing.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: September 29, 1981
    Assignee: American Optical Corporation
    Inventor: Louis Prunier
  • Fiberscope
    Patent number: 4290421
    Abstract: Universal articulation of the end of a medical or industrial fiberscope is accomplished with three-wire control for reducing space requirements in small diameter instruments.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: September 22, 1981
    Assignee: American Optical Corporation
    Inventor: Walter P. Siegmund
  • Gradient photochromic lens and method selectively reducing photochromic activity
    Patent number: 4289497
    Abstract: A new gradient photochromic lens having a uniform resistance to fatigue is disclosed. A method for selectively reducing photochromic activity in one or more portions of a lens having a photochromic dye uniformly disposed across the surface thereof is also disclosed.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: September 15, 1981
    Assignee: American Optical Corporation
    Inventor: Richard J. Hovey
  • Drive mechanism
    Patent number: 4288710
    Abstract: Driving an object along a given path with a standard pitch lead screw operated by a stepping motor. Adjustment is provided for accurately completing, with full motor steps, various excursions of object travel ordinarily requiring less than a full motor step for completion of the travel. The above is accomplished by driving the lead screw askew of the axis of desired object travel.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: September 8, 1981
    Assignee: American Optical Corporation
    Inventor: W. Duane Hamilton
  • Tape head mount
    Patent number: 4287543
    Abstract: An adjustable tape head mounting mechanism includes a housing for engaging the tape, and comprises structure for supporting the head housing relative to a head carriage at at least three spaced positions on the housing for head adjustment.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: September 1, 1981
    Assignee: American Optical Corporation
    Inventor: David Banks
  • Contact lens mold
    Patent number: 4284399
    Abstract: A two piece contact lens mold having a pair of blunt, continuous mating surfaces extending around the periphery of the mold cavity is disclosed. Location of the mold parting line tangent to the lens edge substantially eliminates registration problems when a relief groove is provided at the edge of the female member. Parameters for mold materials and important dimensions are also disclosed. The mold can produce finished contact lenses which do not require further machining.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: August 18, 1981
    Assignee: American Optical Corporation
    Inventors: Paul D. Newcomb, Paul A. Davignon, Harold M. Miller
  • Instrument for optically measuring soft contact lens parameters
    Patent number: 4283139
    Abstract: Apparatus is disclosed for determining, with improved accuracy, the back vertex power of a hydrated soft contact lens. The increased accuracy is determined by sequentially using several optical modes to provide additional information needed to accurately calculate back vertex power. Lens thickness, sagittal height and posterior radius values are also accurately obtained with the apparatus.Optionally, a mode for determining lens radius and thickness is also disclosed.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: August 11, 1981
    Assignee: American Optical Corporation
    Inventor: C. Hermas Swope
  • Apparatus and method for making cast ophthalmic lenses
    Patent number: 4279401
    Abstract: Cast multifocal lenses are produced from ledged casting pieces molded from a master die having a molding surface made up of juxtapositioned die components each precision surfaced to a curvature and finish corresponding to a multifocal surface desired to be cast upon a lens and relatively prearranged according to desired height and position of cast lens ledging.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: July 21, 1981
    Assignee: American Optical Corporation
    Inventors: Peter R. Ramirez, Bradford Canterbury
  • Lens tape cutter
    Patent number: 4277891
    Abstract: Surface protecting tape is cut away from a lens edge with an annular cutting blade after application to the lens. The blade is pressed and/or rotated into portions of the tape extending over the lens edge for cutting therethrough and freeing the lens. Knife edge serrations enhance the cutting action and blade holding means facilitates its operation.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: July 14, 1981
    Assignee: American Optical Corporation
    Inventor: Harold R. Dick
  • Quick-release clamp for microtomes
    Patent number: 4278263
    Abstract: A quick-release clamp particularly suitable for microtomes is disclosed. The clamp has several fingers protruding from the face of the clamp assembly to grip an object. A pivotally mounted control arm first moves the protruding fingers away from the face of the assembly and then moves them away from the center axis of the assembly to provide clearance for removal of the object. The object preferably has tabs adapted to extend under a lip portion of the fingers.
    Type: Grant
    Filed: October 24, 1979
    Date of Patent: July 14, 1981
    Assignee: American Optical Corporation
    Inventor: Julius S. Rosen
  • Bilirubin concentration analyzer
    Patent number: D261033
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: September 29, 1981
    Assignee: American Optical Corporation
    Inventor: John T. Armbruster
  • Medical instrument housing
    Patent number: D261034
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: September 29, 1981
    Assignee: American Optical Corporation
    Inventor: John T. Armbruster
  • Bilirubinometer
    Patent number: D261173
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: October 6, 1981
    Assignee: American Optical Corporation
    Inventor: John T. Armbruster
  • ECG Tape playback/recorder/monitor/analyzer system
    Patent number: D262401
    Type: Grant
    Filed: July 13, 1979
    Date of Patent: December 22, 1981
    Assignee: American Optical Corporation
    Inventors: Richard A. Hawes, John B. MacDonald, Michael L. Sokol
  • Pair of spectacles
    Patent number: D263058
    Type: Grant
    Filed: May 25, 1979
    Date of Patent: February 16, 1982
    Assignee: American Optical Corporation
    Inventor: David W. Johnsen