Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
313 words
In combination with masonry or other material having a hole of predetermined diameter drilled therein, an anchor bolt assembly adapted to tightly fasten a fixture having a hole therein against the surface of said masonry, said assembly comprising: A. A bolt insertable through the fixture hole into said masonry hole, the bolt being provided with an enlarged head engageable by a torque tool for turning the bolt, said bolt having a main section and a threaded rear section; B. an expansible shell loosely encircling the upper portion of the rear section to define an annular space therebetween, the normal diameter of the shell being substantially no greater than that of the masonry hole; and C. a wedge nut provided with an internally-threaded bore threadably received on the lower portion of the rear section, said nut having a conical upper zone and means defining a compressible lower zone whose normal diameter defines a transverse dimension which is greater than that of any other part of the assembly except for the enlarged head of the bolt and exceeds the diameter of the masonry hole to the extent that the assembly has to be driven into the masonry hole in order to insert the assembly therein, thereby subjecting the lower zone to compression preventing rotation of the nut whereby when the bolt is then turned in, the wedge nut advances axially toward the shell and the conical zone thereof enters the annular space to expand the shell and force it outwardly against the masonry hole, the lower zone remaining outside the shell and and having a configuration such that compression of the lower zone acts to constrict the internally threaded bore therein whereby when the threaded rear section of the bolt enters therein it expands the lower zone against the masonry hole to provide a first anchoring force, the expanded shell providing a second anchoring force.
Claim 2
Dependent Claim
313 words
In combination with masonry or other material having a hole of predetermined diameter drilled therein, an anchor bolt assembly adapted to tightly fasten a fixture having a hole therein against the surface of said masonry, said assembly comprising: A. A bolt insertable through the fixture hole into said masonry hole, the bolt being provided with an enlarged head engageable by a torque tool for turning the bolt, said bolt having a main section and a threaded rear section; B. an expansible shell loosely encircling the upper portion of the rear section to define an annular space therebetween, the normal diameter of the shell being substantially no greater than that of the masonry hole; and C. a wedge nut provided with an internally-threaded bore threadably received on the lower portion of the rear section, said nut having a conical upper zone and means defining a compressible lower zone whose normal diameter defines a transverse dimension which is greater than that of any other part of the assembly except for the enlarged head of the bolt and exceeds the diameter of the masonry hole to the extent that the assembly has to be driven into the masonry hole in order to insert the assembly therein, thereby subjecting the lower zone to compression preventing rotation of the nut whereby when the bolt is then turned in, the wedge nut advances axially toward the shell and the conical zone thereof enters the annular space to expand the shell and force it outwardly against the masonry hole, the lower zone remaining outside the shell and and having a configuration such that compression of the lower zone acts to constrict the internally threaded bore therein whereby when the threaded rear section of the bolt enters therein it expands the lower zone against the masonry hole to provide a first anchoring force, the expanded shell providing a second anchoring force.
Claim 3
Dependent Claim
100 words
An anchor bolt assembly as set forth in claim 1, wherein said threaded rear section is of reduced diameter to define a shoulder between the main and rear sections and further including a collar of deformable material interposed between the shoulder and the shell, whereby when no further advance of the wedge nut toward the shell is possible, further turning of the bolt causes the shoulder thereof to compress said collar and to permit the bolt to advance further into the masonry hole until the bolt head presses against the fixture to tighten it against the surface of the masonry.
Claim 4
Dependent Claim
17 words
An assembly as set forth in claim 1, wherein said collar is formed by a lead alloy.
Claim 5
Dependent Claim
17 words
An assembly as set forth in claim 1, wherein said collar is formed of synthetic plastic material.