Metal working – Means to assemble or disassemble – Coupling to conduit
Reexamination Certificate
2000-12-05
2001-11-20
Hail, III, Joseph J. (Department: 3723)
Metal working
Means to assemble or disassemble
Coupling to conduit
C029S268000, C029S243560, C029S283500
Reexamination Certificate
active
06317950
ABSTRACT:
This invention relates to a pipe crimping apparatus for crimping the joints of pipe connections of the type having non-flux, non-solder joints, for example, those described in my UK Patent No. GB 2 219 644. The purpose of crimping is to secure one length of pipe to another length of pipe or to a pipe connector by impressing portions of the outer socket end onto the inner spigot end of the connection.
Accordingly, the present invention is a pipe crimping apparatus comprising holding means to externally engage and hold a joint to be crimped, the holding means having a concavity defining a part cylindrical clamping zone, at least one pair of crimping arms pivotally mounted on the holding means, each arm being movable relative to the clamping zone and means to cause movement of the arms relative to the clamping zone wherein the arms, in a crimping movement, extend radially into the clamping zone to engage a joint, and impress by indentation portions of an outer socket end onto an inner spigot end to secure the same together wherein the holding means is an elongate block with the concavity in one peripheral side with both ends of the block rebated to provide two cheeks between which a respective crimping arm is pivoted, the crimping arms being similarly cranked and mounted in mirror-image on the block with each arm provided at its crank to the respective cheeks of the block and the distal en of the outer part of each arm having a protuberance directed inwardly towards the clamping zone.
Preferably, a part cylindrical plate member is secured in the concavity with its axis normal to the longitudinal axis of the block, the clamping zone being provided in the plate member. Movement apart of the inner ends of the inner parts of the arms causes inward movement of the distal ends of the outer part of the arms. The plate member has desirably opposed cut-outs extending inwards from its respective sides to allow for movement of the arms therethrough.
Preferably also, the means to cause movement is a pair of handles with one end of each handle pivoted to a respective inner end of one inner part of an arm, the handles being pivoted together through a link near to the one end with the other end of the handles serving as hand grips. Movement of the hand grips together causes movement apart of the inner ends of the arms and consequential inward crimping movement of the distal ends of the arms.
Preferably further, the block has a spindle extending normally from the other longitudinal side to pass through a bore in the link, the spindle moving freely through the bore on closing and opening of the hand grips.
REFERENCES:
patent: 2235616 (1941-03-01), Ice
patent: 2739373 (1956-03-01), Kane, Jr.
patent: 4080820 (1978-03-01), Allen
patent: 4829805 (1989-05-01), Koehn
patent: 5511297 (1996-04-01), Cross
patent: 6185980 (2001-02-01), Law
patent: 6202272 (2001-03-01), Jackson
Greigg Ronald E.
Hail III Joseph J.
Resources Conservation Incorporated
Wilson Lee
LandOfFree
Pipe crimping apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pipe crimping apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pipe crimping apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2594718