Grinding tool and spacer assembly for use therein
OwnerGerard O'Reillyinventor
Life of this patent
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Abstract
A grinding tool includes a rotary motor driving a rotary drive shaft, a first grinding disc having a center opening for receiving the drive shaft, with the outer end of the drive shaft projecting through the opening in the grinding disk, a spacer assembly having a socket at one end receiving the projecting end of the drive shaft, a pin at the opposite end, and a spacer between said socket and pin, a second grinding disc having a center opening for receiving the pin of the spacer assembly with the outer end of the pin projecting through the latter opening and an outer collar attached to the projecting end of the pin for securing the two grinding discs to the drive shaft in spaced-apart relationship such as to enable the grinding tool to simultaneously cut two spaced grooves.
Claims20
A grinding tool, comprising:
- a rotary motor driving a rotary drive shaft;
- a first grinding disc having a center opening for receiving said drive shaft with the outer end of the drive shaft projecting through the opening in the grinding disc;
- a spacer assembly having a socket at one end receiving the projecting end of said drive shaft, a pin at the opposite end, and spacer means between said socket and pin;
- a second grinding disc having a center opening for receiving said pin of the spacer assembly with the outer end of the pin projecting through the latter opening;
- and an outer collar attached to said projecting end of the pin for securing the two grinding discs to the drive shaft in spaced apart relationship such as to enable the grinding tool to simultaneously cut two spaced grooves.
A spacer assembly for use with a grinding tool comprising a rotary motor driving a rotary drive shaft, a first grinding disc having a center opening for receiving said drive shaft with the outer end of the drive shaft projecting through the opening in the grinding disc, and an outer collar attached to the projecting end of the pin for securing the grinding disc to the drive shaft comprising:
- a socket at one end receiving the projecting end of said drive shaft, a pin at the opposite end, and spacer means between said socket and pin;
- said pin being adapted to project through the opening of said first grinding disc to thereby enable the spacer assembly to receive a second grinding disc having a center opening receiving said pin with the outer end of the pin projecting through the latter opening, whereby said outer collar may be attached to said projecting end of the pin to secure the two grinding discs to the drive shaft in spaced apart relation, and thereby to enable the grinding tool to simultaneously cut two spaced grooves.
Dependencies are inferred from the claim text.