Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
387 words
A clamping device for the end of a hollow pipe comprising in combination: a hollow joint member having a cylindrical clamping end portion with an enlarged cross-sectional area, said enlarged area having a first internal stepped portion with female-type threads tapering inwardly from the outer end of said joint member, said first stepped portion defining an annular spacing between said joint member and said pipe, said enlarged area having a second internal stepped portion located and arranged more remote from the outer end of said joint member than said first stepped portion, a first radially extending shoulder joining said first and second step portions, a second radially extending shoulder at the inner end of said second step portion and adapted to abut the end of said pipe; a hollow cylindrical clamping assembly having a nut portion means and a thread portion means, said thread portion means being positioned within said annular spacing, said nut and thread portion means being structurally arranged as two semi-cylindrical portions provided with longitudinal slits diametrically opposite one another and together forming the split hollow cylindrical clamping assembly, said longitudinal slits extending the full length of said thread portion means, a pair of outwardly projecting means being formed on the longitudinal split edges of each of said semi-cylindrical portions, one projecting means positioned intermediate said thread portions means, and the othEr projecting means positioned at the outer end of said nut portion means, and corresponding recess means being formed on said thread and nut portion means for respectively receiving said projecting means therein to secure said semi-cylindrical portion firmly together, said thread portion means having external male-type threads tapering away from the outer end of said clamping assembly and being operatively engaging said female-type threads of said first stepped portion, said thread portion means having internal threads of the same pitch as said external male-type threads of said thread portion means, said internal threads of said thread portion means being adapted to engage said pipe; and an annular packing member positioned within said annular spacing adjacent the inner end of said thread portion means of said clamping assembly and engaging said first shoulder, the penetration of said thread portion means into said annular spacing urging said packing member into a fluid tight relationship between said joint member and the surface of the pipe.
Claim 2
Dependent Claim
387 words
A clamping device for the end of a hollow pipe comprising in combination: a hollow joint member having a cylindrical clamping end portion with an enlarged cross-sectional area, said enlarged area having a first internal stepped portion with female-type threads tapering inwardly from the outer end of said joint member, said first stepped portion defining an annular spacing between said joint member and said pipe, said enlarged area having a second internal stepped portion located and arranged more remote from the outer end of said joint member than said first stepped portion, a first radially extending shoulder joining said first and second step portions, a second radially extending shoulder at the inner end of said second step portion and adapted to abut the end of said pipe; a hollow cylindrical clamping assembly having a nut portion means and a thread portion means, said thread portion means being positioned within said annular spacing, said nut and thread portion means being structurally arranged as two semi-cylindrical portions provided with longitudinal slits diametrically opposite one another and together forming the split hollow cylindrical clamping assembly, said longitudinal slits extending the full length of said thread portion means, a pair of outwardly projecting means being formed on the longitudinal split edges of each of said semi-cylindrical portions, one projecting means positioned intermediate said thread portions means, and the othEr projecting means positioned at the outer end of said nut portion means, and corresponding recess means being formed on said thread and nut portion means for respectively receiving said projecting means therein to secure said semi-cylindrical portion firmly together, said thread portion means having external male-type threads tapering away from the outer end of said clamping assembly and being operatively engaging said female-type threads of said first stepped portion, said thread portion means having internal threads of the same pitch as said external male-type threads of said thread portion means, said internal threads of said thread portion means being adapted to engage said pipe; and an annular packing member positioned within said annular spacing adjacent the inner end of said thread portion means of said clamping assembly and engaging said first shoulder, the penetration of said thread portion means into said annular spacing urging said packing member into a fluid tight relationship between said joint member and the surface of the pipe.