Back to results
US 5,913,447 AGranted
Instrument casing assembly
AssigneeDresser Industries, Inc.
InventorDavid M. Carpenter
Life of this patent
Estimating the term…
Abstract
An instrument casing assembly and a method of forming the casing that includes a case for receiving a lens having an integral peripheral shoulder engageable with a sidewall of the case. The sidewall when crimped about the shoulder, providing a gasketless water-tight seal to protect the internal parts of the instrument assembly.
Claims20
A casing assembly for a pressure gauge comprising:
- A) a cup-like case internally defining when unassembled a radially extending shoulder and an annular sidewall in an upstanding relation from about the periphery of said shoulder;
- and
- B) a lens within said sidewall supported on said shoulder and defining an exterior periphery from a lower periphery at said shoulder to an upper periphery above said shoulder;
- C) said sidewall when assembled being crimped from said upstanding relation directly against and about the upper periphery of said lens for effecting a gasketless moisture seal extending substantially from between about the shoulder of said case to about the upper periphery of said lens.
1 more element
A method of forming a water tight seal for a pressure gauge casing assembly comprising the steps of:
- a) providing a cup-like case internally defining a radially extending shoulder and an annular sidewall in an upstanding relation about the periphery of said shoulder;
- b) providing on said shoulder and within the sidewall of said case a lens defining an exterior periphery from a lower periphery at said shoulder to an upper periphery above said shoulder;
- c) crimping said sidewall from said upstanding relation directly against and about the periphery of said lens for effecting a gasketless moisture seal extending substantially from between about said shoulder to about the upper periphery of said lens.
A casing assembly for a pressure gauge comprising:
- A) a cup-like case internally defining a radially extending shoulder and an annular sidewall in an upstanding relation from about a lower periphery of said shoulder;
- and
- B) a lens supported on said shoulder peripherally surrounded by said sidewall from a lower periphery at said shoulder to an upper periphery above said shoulder;
- C) said sidewall being crimped from said upstanding relation directly against and about the periphery of said lens for effecting a gasketless moisture seal extending substantially from between about said shoulder to about the upper periphery of said lens.
1 more element
Dependencies are inferred from the claim text.