Lightweight fire hose coupling with protective shoulder and method of manufacturing the coupling
AssigneeMercedes Textiles Ltd.
InventorRobert RICHARDSON
Life of this patent
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Abstract
A fire hose coupling comprises a substantially annular body having a first end adapted to connect to a fire hose and a second end having male threads, the annular body having a central bore. The coupling includes a plurality of circumferentially spaced-apart lugs extending radially outwardly from an outer surface of the first end of the body. The coupling further includes a protective shoulder extending radially outwardly from the body between the male threads and the lugs, the protective shoulder having an outer diameter greater than an outer diameter of the male threads to thereby protect the male threads.
Claims8
A fire hose coupling comprising:
- a substantially annular body having a first end adapted to connect to a fire hose and a second end having male threads, the annular body having a central bore;
- a plurality of circumferentially spaced-apart lugs extending radially outwardly from an outer surface of the first end of the body;
- and
- a protective shoulder extending radially outwardly from the body between the male threads and the lugs, the protective shoulder having an outer diameter greater than an outer diameter of the male threads to thereby protect the male threads.
A method of manufacturing a fire hose coupling, the method comprising:
- providing metal bar stock;
- boring a hole in the metal bar stock;
- cutting away an outer portion of the metal bar stock to define an annular body having a constant outer diameter and to define a plurality of lugs extending radially outwardly from the annular body and to further define a shoulder that extends radially outwardly from the annular body;
- and
- cutting male threads on a second end of the annular body such that the shoulder lies between the male threads and the lugs and such that an outer diameter of the male threads is less than an outer diameter of the shoulder so that the shoulder will protect the male threads.
Dependencies are inferred from the claim text.