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US 6,637,115 B2Granted
Pipe cutter
OwnerRichard T. Walsh, Richard T. Walsh, Jr.inventors
Life of this patent
Estimating the term…
Abstract
A cutting head for a portable, hand-held, power-operated pipe cutter is constructed with at least one channel in a rotating mounting plate assembly, to permit lateral insertion of a pipe. The power-transmission arrangement employed includes at least one component that effectively spans the entrance to the channel in the mounting plate so as to ensure that driving engagement therebetween is constantly maintained.
Claims25
A cutting head for a power-operated pipe cutter, comprising:
- a support member having a supporting portion;
- a mounting member supported by said supporting portion of said support member for rotation about a central axis of said head, said mounting member having at least a first channel extending inwardly from the periphery thereof for permitting lateral insertion of a pipe thereinto, for disposition on said axis, and said support member being constructed to permit such pipe insertion;
- cutting means mounted on said mounting member for rotation therewith and comprising at least two contact elements disposed generally diametrically of said axis and along opposite sides of said first channel, said cutting means being constructed for varying the spacing between said at least two contact elements to permit such lateral insertion of a pipe therebetween and to enable said contact elements to engage opposite sides of a pipe disposed on said axis, at least one of said two contact elements being a cutting element;
- said cutting means including mounting means comprised of a pair of confronting portions, each said portion supporting at least one of said contact elements thereon, and self-centering adjustment means operatively connected to said confronting portions for varying said spacing between said at least two contact elements, said adjustment means being effective for simultaneously moving said two contact elements toward and away from one another through substantially equal distances;
- and said head further comprising cooperative means for causing said adjustment means to operatively engage said support member for advancing and retracting said confronting portions of said mounting means upon rotation of said mounting member in one or the other direction;
- and
- a power-transmission arrangement comprising driven means, on a peripheral portion of said mounting member, and drive means interengaged with said driven means, said power-transmission arrangement including at least one component that effectively spans the entrance to said first channel at said periphery of said mounting member for enabling the constant delivery of power to said mounting member.
4 more elements
A cutting head for a power-operated pipe cutter, comprising:
- support member having a supporting portion;
- a mounting member supported by said supporting portion of said support member for rotation about a central axis of said head, said mounting member having at least a first channel extending inwardly from the periphery thereof for permitting lateral insertion of a pipe thereinto, for disposition on said axis, and said support member being constructed to permit such pipe insertion;
- cutting means mounted on said mounting member for rotation therewith and comprising at least two contact elements disposed generally diametrically of said axis and along opposite sides of said first channel, said cutting means being constructed for varying the spacing between said at least two contact elements to permit such lateral insertion of a pipe therebetween and to enable said contact elements to engage opposite sides of a pipe disposed on said axis, at least one of said two contact elements being a cutting element;
- and
- a power-transmission arrangement comprising driven means, on a peripheral portion of said mounting member, and drive means interengaged with said driven means, said power-transmission arrangement including at least one component that effectively spans the entrance to said first channel at said periphery of said mounting member for enabling the constant delivery of power to said mounting member, said at least one component comprising a peripheral segment piece that is dimensioned and configured to to effectively span said first channel entrance, and said segment piece and said mounting member being cooperatively constructed for displaceably positioning said segment piece in substantial spanning relationship across said first channel entrance, said segment piece being slidably mounted on said mounting member.
2 more elements
A power-operated pipe cutter, comprising in combination:
- (a) body;
- (b) a motor;
- and
- (c) a cutting head operatively supported on said body and comprising:
- a support member having a supporting portion;
- a mounting member supported by said supporting portion of said support member for rotation about a central axis of said head, said mounting member having at least a first channel extending inwardly from the periphery thereof for permitting lateral insertion of a pipe thereinto, for disposition on said axis, and said support member being constructed to permit such pipe insertion;
- cutting means mounted on said mounting member for rotation therewith and comprising at least two contact elements disposed generally diametrically of said axis and along opposite sides of said first channel, said cutting means being constructed for varying the spacing between said at least two contact elements to permit such lateral insertion of a pipe therebetween and to enable said contact elements to engage opposite sides of a pipe disposed on said axis, at least one of said two contact elements being a cutting element;
- said cutting means including mounting means comprised of a pair of confronting portions, each said portion supporting at least one of said contact elements thereon, and self-centering adjustment means operatively connected to said confronting portions for varying said spacing between said at least two contact elements, said adjustment means being effective for simultaneously moving said two contact elements toward and away from one another through substantially equal distances;
- and said head further comprising cooperative means for causing said adjustment means to operatively engage said support member for advancing and retracting said confronting portions of said mounting means upon rotation of said mounting member in one or the other direction;
- and
- a power-transmission arrangement comprising driven means, on a peripheral portion of said mounting member, and drive means operatively connected to said motor and interengaged with said driven means, said power-transmission arrangement including at least one component that effectively spans the entrance to said first channel at said periphery of said mounting member for enabling the constant delivery of power to said mounting member.
8 more elements
Dependencies are inferred from the claim text.