The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 1976
Filed:
Jan. 30, 1975
Antonio Ferrentino, Monza, IT;
Industrie Pirelli Societa per Azioni, Milan, IT;
Abstract
Method and a tool for accurately aligning the axis of a flexible waveguide of circular section with another similarly shaped element of a telecommunication line, such as another flexible waveguide or a terminal, in which an accurately machined tool having a first cylindrical portion expansible in diameter and a second portion with an outer cylindrical surface accurately co-axial with the first portion is inserted into the waveguide with the first portion therein and the second portion extending therefrom. The first portion is expanded until it engages the inner surface of the waveguide and then a frusto-conical sleeve is mounted around the waveguide end in accurate axial alignment with the inner surface of the waveguide using a further sleeve mounted on the second portion of the tool. The space between the sleeve around the waveguide end and the outer surface of the waveguide is filled with a purable resin, e.g., epoxy resin, which sets holding the last-mentioned sleeve co-axial with the inner surface of the waveguide. The end of the waveguide is levelled using a milling machine supported by said second portion of said tool. The other element is similarly prepared, and the sleeves are joined by bolts and an accurately ground ring encircling surfaces at the sleeve ends.