
Many of Castool products and processes are “PATENTED”
This outlines what to look for when identifying product or technologies that possibly overlap with CASTOOL patents.

WEAR RING FOR DIE-CASTING PISTON

What we are looking for:
ANY Wear Ring for a Die-Casting Piston having:
- Ring-shaped body with cut having 2 pairs of opposing faces
- Opposing faces are angled to allow faces to contact each other flush manner when ring is compressed
IMPROVED WEAR RINGS WITH SLOTS

What we are looking for:
ANY Wear Ring for a Die-Casting Piston having:
- Ring-shaped body with cut having 2 pairs of opposing faces
- One or more slots on face of body

What we are looking for:
ANY Die-Casting Shot Sleeve having:
- Body having an axial bore
- Sleeve liner formed on bore surface
- Sleeve insert abutting the liner
ALLPER PISTON

What we are looking for:
ANY Die-Casting Piston having:
- Piston cover
- Piston body supporting bushing
- Piston carrier
- Bayonet connectors on piston cover and on piston
DIE-CASTING PISTON WITH IMPROVED TOUGHNESS

What we are looking for:
ANY Die-Casting Piston having:
- Piston head, made 1st material
- Inner carrier coupled to piston head
- Sleeve on inner carrier
- Wear ring mounted on piston head and made of 2nd material with higher hardness and lower toughness than 1st material
- Piston head, made of any of AISI grade 4340, 300M or 4140 steel
- Inner carrier coupled to piston head
- Sleeve on inner carrier
- Wear ring mounted on piston head
The Director of the United States Patent and Trademark Office
Has received an application for a patent for a new and useful invention. The title and description of the invention are enclosed. The requirements of law have have been complied with, and it has been determined that a patent on the invention shall be granted under the law.
UNITED STATES PATENT
Grants to the person(s) having title to this patent the right to exclude others from making, using, offering for sale, or selling the invention throughout the United States of America or importing the invention into the United State of America, and if the invention is a process, of the right to exclude other from using, offering for sale or selling throughout the United State of America, or importing into the United States of America, products made by that process, for the term set forth in 35 U.S.C. 154(a)(2) or (c)(1), subject to the payment of maintenance fees as provided by 35 U.S.C. 41(b). See the Maintenance Fee Notice on the inside of the cover.
SOME OF DIE CASTING PATENT
If you see any product or technology that has ALL of the features identified by a bullet point,
Please contact PAUL ROBBINS
Results may vary depending on individual press characteristics and setup.