Patents by Inventor William R. Helms

William R. Helms has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for elevating load-bearing access devices
    Patent number: 4158515
    Abstract: This invention pertains to a method and apparatus whereby, when a thoroughfare is to be resurfaced, the covers for the openings that extend downwardly beneath such thoroughfares may be raised to a level corresponding to the raised level of the resurfaced thoroughfare. Such raising is accomplished without the need for digging up the framework that supported the cover.
    Type: Grant
    Filed: March 2, 1978
    Date of Patent: June 19, 1979
    Inventor: William R. Helms
  • Manhole cover and frame work
    Patent number: 4145151
    Abstract: A method for inhibiting movement between a load bearing access device, such as a manhole cover or catch basin grate and its supporting framework which involves drilling a plurality of vertical passageways at spaced apart intervals adjacent to the circumference of said access device, said passageways also extending into said supporting framework, and fixing vertical studs in said passageways.
    Type: Grant
    Filed: March 30, 1978
    Date of Patent: March 20, 1979
    Inventor: William R. Helms