Robert L Welsh

US Patent:

40735788, Feb 14, 1978

Filed:

Apr 21, 1975

Appl. No.:

5/570218

Inventors:

Robert C. Welsh - Coconut Grove FL

International Classification:

G02C 702
G02B 304

US Classification:

351167

Abstract:

A spectacle lens having an anterior surface curvature, the anterior surface having a spherically shaped central vision surface area from 12 to 16 diopters and a peripheral, aspherical surface area surrounding the center vision spherical area, the aspherical surface area formed with a uniform diopter gradient varying from the central vision surface area edge to the outer circumference of the lens. The aspherical diopter rate of change, approximately one-third diopter per millimeter which is reduced from the spherical area toward the outer lens circumference, improves the peripheral vision of a person having aphakia when looking through the central vision portion, while eliminating the pin cushion effect found in conventional lenses which result from overpowering in the outer areas of the lens. The lens is useful for improving the vision of one having aphakia when looking through the central vision area and teaching the patient to rotate his head rather than his eyes to more clearly observe objects by re-establishing a new center vision point.

US Patent:

48567426, Aug 15, 1989

Filed:

May 18, 1988

Appl. No.:

7/195157

Inventors:

Robert C. Welsh - Miami FL

International Classification:

G02B 2100

US Classification:

248124

Abstract:

The invention relates to a portable bracket for holding a microscope, especially a heavy surgical eye-operating microscope. The bracket has an inverted L-shape with an upright column or stand and a horizontal arm member. A hollow tube is located at the outer end of the horizontal arm to receive a vertical support tube or neck of a microscope. The hollow tube is adaptable to receive various sizes of microscopes and render any heavy microscope more portable by eliminating the normally cumbersome attachment mechanisms. The neck of the miroscope is secured in the tube by a side lock knob which clamps the neck within the tube and/or a top lock knob which is attached to the neck of the microscope and abuts against a top face of the tube.

US Patent:

41737989, Nov 13, 1979

Filed:

May 4, 1978

Appl. No.:

5/902830

Inventors:

Robert C. Welsh - Miami FL

International Classification:

A61F 116
A61F 124

US Classification:

3 13

Abstract:

An improved iris plane intra-ocular lens for implantations into an aphakic human eye wherein the back side of the haptic crotch regions of each of the horizontal haptics is substantially chamfered for substantially decreasing warping of the iris at the pupillary margin.

US Patent:

46905227, Sep 1, 1987

Filed:

Jul 1, 1985

Appl. No.:

6/750279

Inventors:

Robert C. Welsh - Miami FL

International Classification:

G02B 2108

US Classification:

350528

Abstract:

The invention relates to illuminator support for supporting an illuminator such that a beam of light projected from the illuminator is generally coaxial with a line of vision to the subject to be viewed. In a preferred embodiment, the illuminator includes a plate having an aperture therethrough for reception of a lens for a microscope. The line of vision is defined by the axis of the lens. The plate supports a bracket which holds an illuminator on a side of the microscope, the illuminator projecting a beam of light on the subject beneath the lens. In the preferred embodiment, the bracket supports the illuminator so that the beam of light is projected along an axis at an angle of 5. degree. -8. degree. with respect to the axis of the line of vision.

US Patent:

20210394197, Dec 23, 2021

Filed:

Jun 22, 2021

Appl. No.:

17/353930

Inventors:

- New Britain CT, US
Mark T. MAYBURY - Chelmsford MA, US
Bhanuprasad V. GORTI - Perry Hall MD, US
Robert P. WELSH - Phoenix MD, US
Sky R. VAN IDERSTINE - Davidsonville MD, US
Adan AYALA - Idlwylde MD, US

International Classification:

B03C 3/017
A61L 9/16
A61L 9/012
B03C 3/66
B03C 3/47
B01D 46/00
A62B 9/00
A62B 23/02
A62B 18/00

Abstract:

An air purifying device has a housing, a blower assembly disposed within the housing for blowing air, an electrically-charged electrostatic plate, and a thermal layer for heating the air to a temperature of at least 75 degrees Celsius, and preferably at least 180 degrees Celsius. The electrostatic plate is connected to a high voltage power supply providing a voltage of at least 3 kilovolts and preferably at least 30 kilovolts. The blower assembly moves the air through the thermal layer at a volume of at least 0.25 cfm and preferably at a volume of less than 15 cfm.