The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2001
Filed:
May. 26, 1999
John F. Trout, Geneva, IL (US);
Other;
Abstract
An injection packer, injection packer installation/removal tool, and method of use thereof are especially suited for use in the repair of concrete structures and the like. The injection packer includes a body that is removable from a nonmetallic expansion member that may remain within a repair bore after the injection material is injected into the repair bore. The packer body includes a shank, nozzle, and keyed head with an injection bore therethrough. The nozzle is threaded to engage a nonmetallic nut attached to the expansion member. In use, as the packer body is rotated in a first direction the expansion member is compressed between the nut and the packer body shank, thereby radially bulging the expansion member. At this point fluid may be injected through the injection packer and into the bore and crack(s). As the packer body is rotated in a second direction the expansion member is uncompressed. The packer body is easily detachable from the expansion member. However, the expansion member may be removed completely from the bore. Ribs or ears on the expansion member assist in preventing rotation of the injection packer during compression. The tool includes a driver member slidably coupled to a socket keyed to receive the keyed head and adapted to rotate the injection packer in the correct direction for insertion and removal thereof.