Dual expansion and non-expansion anchor
AssigneeU.S.E. Diamond, Inc.
InventorsAlfred A. Shamah, James R. Schroeder
Life of this patent
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Abstract
A dual expansion and non-expansion anchor comprising a pair of inner and outer expansion fasteners connected to each other by means of a screw-threaded connecting tie, said expansion fasteners being adjustable on the connecting tie to adjust to the spaced positions of an inner supporting structure and an outer supported wall. Insertion limiting means is provided to limit insertion of the inner fastener into the inner supporting structure in order to fix the position of said inner fastener in said supporting structure. Torque applying means applied to the connecting tie inserts and sets the inner fastener. Torque applying means applied to a nut on the connecting tie expands the outer expansion fastener.
Claims7
A dual anchor comprising:
- a. a screw-threaded connecting tie,
- b. a first non-expansion fastener on said connecting tie at one end thereof,
- c. a second expansion fastener on said connecting tie at the opposite end thereof;
- d. a wedge nut of said second expansion fastener mounted on, but free from threaded engagement with, said connecting tie,
- e. first stop means on said connecting tie engaging a structural member for said first non-expansion fastener,
- f. said first non-expansion fastener being rotatable when the connecting tie is rotated to insert it into said structural member and secure it thereto,
- g. second stop means on said connecting tie engaging an expansion sleeve of the second expansion fastener,
- h. an additional nut threaded to said connecting tie,
- i. said additional nut abutting the wedge nut of the second expansion fastener, and
- j. the expansion sleeve of the second expansion fastener being expandable when the additional nut is rotated relative to the connecting tie to drive said wedge nut of the second expansion fastener against said expansion sleeve.
Dependencies are inferred from the claim text.