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:
Jan. 29, 2019
Filed:
Mar. 17, 2016
Shonan Gosei-jushi Seisakusho K.k., Kanagawa, JP;
Takao Kamiyama, Kanagawa, JP;
Abstract
A spacer is inserted in a gap between an existing pipe and a rehabilitation pipe to adjust the position of the rehabilitation pipe inside the existing pipe. The spacer comprises first and second wedge-shaped members each having an inclined surface of the same inclination angle and being overlapped with the inclined surfaces thereof overlapped. Latching teeth are formed in the inclined surfaces of the first and second wedge-shaped members so that the second wedge-shaped member is movable relative to the first wedge-shaped member in the insertion direction of the spacer to stepwise increase an overall height thereof, but immovable in the reverse direction. Either one of the first and second wedge-shaped members is provided at the engaging teeth portions with an elastic deformable member that can be elastically deformed to disengage the latching teeth of the first and second wedge-shaped members to enable movement of the second wedge-shaped member in the reverse direction for re-adjustment of the position of the rehabilitation pipe inside the existing pipe.