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Metal Working

Jack-bolt-assembly

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Jack bolt assembly

Details

Inventors: Neill, David C.;
Assignee:
Primary Examiner: Arola; Dave W.
Assistant Examiner:
Attorney, Agent or Firm: Glaser, Griggs & Schwartz

A jack bolt assembly for separating joined first and second flange members of a flange assembly including a longitudinally extending, generally rod-shaped jack bolt member adapted to extend between first and second flange members of the flange assembly and a thrust member, the jack bolt member having a primary threaded portion for threadedly engaging at least one of the openings formed in the first flange member, a radial engaging surface, and a thrust member receiving portion in axial alignment with the primary threaded portion, the thrust member mounted with the thrust member receiving portion and between the first and second flange members for separating the flange members of the flange assembly upon rotation of the jack bolt member with respect to the first flange member of the flange assembly. The jack bolt assembly further includes an improved tool engaging adapter for removable mounting with the jack bolt member.

DETAILED DESCRIPTION The present invention relates to a new and improved jack bolt assembly for separating first and second flange members of a releasably secured flange assembly including a jack bolt member extending between the flange members of the flange assembly.
The jack bolt member is of a longitudinally extending generally rod-shaped configuration and includes a primary threaded portion for threadedly engaging one of the openings in the first flange member, a radial engaging surface formed adjacent to the primary threaded portion, a thrust member receiving portion formed adjacent to the threaded portion and axially aligned therewith, with the thrust member receiving portion partially extending into the aligned opening formed in the second flange member of the flange assembly.
The jack bolt assembly further includes a thrust member movably mounted with the thrust member receiving portion for abutting the radial engaging surface and second flange member upon initial rotation of the primary threaded portion, the engagement of the thrust member with the second flange member for separating the first and second flange members of the flange assembly upon continued rotation of the primary threaded portion.
The jack bolt assembly further includes an improved tool engaging adapter for removable mounting with the tool engaging end of the primary threaded portion.

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