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US 4,066,270 AGranted
Nipple chuck
AssigneeCollins Machinery Corporation
InventorRobert D. Elkin
Life of this patent
Estimating the term…
Abstract
Pipe chucking apparatus comprises: A. a tubular mandrel, B. driver means to engage the exterior of the mandrel and rotate same, C. a work pipe to be rotated relative to a forming tool, D. jaws on the mandrel and releasably coupled to the bore of the work pipe, E. actuator means within the mandrel to displace the jaws into and out of coupling engagement with the bore of the work pipe.
Claims13
In pipe chucking apparatus,
- a. an axially elongated tubular mandrel receivable within a bore formed by the pipe,
- b. a plurality of jaws spaced about said mandrel axis at the mandrel exterior,
- c. an axially elongated actuator extending radially inwardly of the jaws and axially within the mandrel, the actuator being operatively connected with the jaws and axially movable relative to the mandrel bodily to displace the jaws axially, and
- d. structure on the mandrel supporting the jaws for radially outward displacement to engage the pipe bore in response to said axial displacement, and for subsequent limited rocking movement of the jaws circumferentially about said axis in response to rotation of the mandrel and jaws relative to the pipe.
1 more element
In combination,
- a. a tubular mandrel,
- b. driver means to engage the exterior of the mandrel and rotate same,
- c. jaws on the mandrel and releasably coupled to the bore of a work pipe to be rotated by said jaws,
- d. actuator means extending axially within the mandrel and radially inwardly of the jaws and through said driver means to displace the jaws into and out of coupling engagement with the bore of the work pipe, and
- e. a hand manipulable rotor on the actuator means at a portion thereof remote from said jaws to advance the actuator axially endwise to effect said jaw displacement,
- f. there being structure on the mandrel supporting the jaws for limited rocking movement circumferentially about said axis in response to rotation of the mandrel and jaws relative to the pipe.
3 more elements
Dependencies are inferred from the claim text.