Brake cable fitting including scraper means

Claim 1

A cable assembly, comprising (a) a tubular outer cable sleeve (18); (b) an inner cable member (12) adapted for longitudinal displacement within said sleeve, said inner cable member including a stranded metal core portion (12a), and a protective outer synthetic plastic layer (12b) surrounding said core portion; (c) a fitting body (1008, 1108, 1206) containing at one end thereof a longitudinal bore defining at the other end of the fitting a first end wall containing a through opening (1012, 1110, 1208), said fitting body also containing at said one end a longitudinal counterbore (1014, 1108c, 1214) defining a second end wall, said counterbore having a diameter corresponding generally with the outer diameter of said cable sleeve; and (d) a tubular resilient seal member (1022, 1112, 1212) arranged concentrically within said bore in abutting engagement with said first end wall, said seal member containing a longitudinal through bore (1026, 1126, 1226) the diameter of which is greater than that of said inner cable member, thereby to define an annular lubrication chamber (1027, 1127, 1227) extending generally the length of said fitting body, said seal member including at one end an annular projecting portion (1022a, 1112a, 1212a) that extends through said wall opening, said outer sleeve member being mounted in said fitting counterbore with said inner cable member extending longitudinally through said seal member projecting portion; (e) said seal member including at the free extremity of said projecting portion radially inwardly directed annular first sealing means (1022d, 1112c, 1212d) in concentric sealing engagement with said protective outer layer of said cable member, said projecting portion having at its free end a cylindrical inner peripheral surface of a diameter corresponding with the diameter of said inner cable member, said cylindrical inner surface terminating in a sharp scraper edge (1022c, 1114, 1214), thereby to scrape impurities from the inner cable member upon longitudinal displacement thereof relative to said sleeve; (f) said seal member further including at its other end an outwardly extending annular flange portion (1022g, 1112d, 1212c) defining second sealing means compressed between the end of said sleeve and said second end wall, said first and second sealing means being operable to close the ends of said lubrication chamber.