Tube scraper with biased blades
AssigneeGeorg Fischer Central Plastics LLC
InventorsRobert A. Goodman, Michael D. Smith
Life of this patent
Estimating the term…
Abstract
A tube scraping apparatus comprises a body having a passageway for receiving a piping component; and a first blade and a second blade. The first blade and second blade each: are mounted to the body and shiftable between a first condition and a second condition; and having an engagement portion positioned to engage an outer diameter (OD) surface of the received piping component in at least one condition, the first blade engagement portion comprising a cutting edge for removing material from the OD surface. The second blade engagement portion comprises a partial thread for engaging the piping component to convert a rotation of the piping component relative to the body to an axial movement of the piping component relative to the body.
Claims16
A tube scraping apparatus comprising:
- a body having a passageway for receiving a piping component;
- and
- a first blade and a second blade, the first blade and second blade each:
- mounted to the body and shiftable between a first condition and a second condition;
- and
- having an engagement portion positioned to engage an outer diameter (OD) surface of the received piping component in at least one condition, the first blade engagement portion comprising a cutting edge for removing material from the OD surface,
- wherein:
- at least one spring biases the first blade and the second blade from the second condition toward the first condition and into engagement with the OD surface;
- and
- the second blade engagement portion comprises means for engaging the piping component to convert a rotation of the piping component relative to the body to an axial movement of the piping component relative to the body.
A tube scraping apparatus comprising:
- a body having a passageway for receiving a piping component;
- a first blade and a second blade, the first blade and second blade each:
- mounted to the body and shiftable between a first condition and a second condition;
- and
- having an engagement portion positioned to engage an outer diameter (OD) surface of the received piping component in at least one condition;
- and
- a fixed position third blade positioned to cut material from the OD surface of the received the piping component,
- wherein:
- the first blade engagement portion is a scraper having an edge for engaging the OD surface to remove material as the piping component is rotated against the edge;
- and
- an open channel extends outboard from the edge along one face of the first blade to allow passage of cut material out of the apparatus.
A tube scraping apparatus comprising:
- a body having a passageway for receiving a piping component;
- and
- a first blade and a second blade, the first blade and second blade each:
- mounted to the body and shiftable between a first condition and a second condition;
- and
- having an engagement portion positioned to engage an outer diameter (OD) surface of the received piping component in at least one condition,
- further characterized by:
- a fixed position third blade positioned to cut material from the OD surface of the received the piping component, the third blade being reorientatably mounted to allow a fresh cutting edge portion to be brought into an operative position.
A tube scraping apparatus comprising:
- a body having a passageway for receiving a piping component;
- and
- a first blade and a second blade, the first blade and second blade each:
- mounted to the body and shiftable between a first condition and a second condition;
- and
- having an engagement portion positioned to engage an outer diameter (OD) surface of the received piping component in at least one condition, the first blade engagement portion comprising a cutting edge for removing material from the OD surface;
- and
- a fixed third blade having a circular edge and positioned to cut material from a location on the piping component prior to said location encountering a cutting edge of the first blade, wherein:
- the second blade engagement portion comprises means for engaging the piping component to convert a rotation of the piping component relative to the body to an axial movement of the piping component relative to the body.
Dependencies are inferred from the claim text.