SAFETY COVER FOR SAND GRINDER
First Claim
1. A safety cover used in a sand grinder comprising a base and a sand wheel rotatably mounted at said base, the safety cover comprising:
- a cover body mounted at said base and rotatably surrounding a part of an outer perimeter of said sand wheel, said cover body comprising a plurality of oval locating holes;
a positioning device comprising a movable pin adapted for selectively engaging into one of said oval locating holes of said cover body subject to rotation of said cover body relative to said sand wheel; and
a switching lever mounted at said base and biasable relative to said base between a locking position and an unlocking position, said switching lever comprising an abutment portion and a bearing portion adjoined to said abutment portion, the distance between said abutment portion of said switching lever and said cover body being shorter than the distance between said bearing portion of said switching lever and said cover body, wherein when said switching lever is set in said locking position, said abutment portion of said switching lever is abutted against said positioning device to lock said positioning device in one said oval locating hole of said cover body;
when said switching lever is set in said unlocking position, said bearing portion of said switching lever faces toward said positioning device for enabling said positioning device to be disengaged from the respective said oval locating hole of said cover body.
1 Assignment
0 Petitions
Accused Products
Abstract
A safety cover used in a sand grinder is disclosed to include a cover body rotatably mounted at the base of the sand grinder around the sand wheel and having equiangularly spaced oval locating holes, a positioning device selectively engaged into one of the oval locating holes, and a switching lever mounted at the base and biasable between a locking position where an abutment portion of the switching lever is abutted against the positioning device to lock the positioning device in one oval locating hole and an unlocking position where a bearing portion of the switching lever faces toward the positioning device for enabling the positioning device to be disengaged from the respective oval locating hole.
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Citations
5 Claims
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1. A safety cover used in a sand grinder comprising a base and a sand wheel rotatably mounted at said base, the safety cover comprising:
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a cover body mounted at said base and rotatably surrounding a part of an outer perimeter of said sand wheel, said cover body comprising a plurality of oval locating holes; a positioning device comprising a movable pin adapted for selectively engaging into one of said oval locating holes of said cover body subject to rotation of said cover body relative to said sand wheel; and a switching lever mounted at said base and biasable relative to said base between a locking position and an unlocking position, said switching lever comprising an abutment portion and a bearing portion adjoined to said abutment portion, the distance between said abutment portion of said switching lever and said cover body being shorter than the distance between said bearing portion of said switching lever and said cover body, wherein when said switching lever is set in said locking position, said abutment portion of said switching lever is abutted against said positioning device to lock said positioning device in one said oval locating hole of said cover body;
when said switching lever is set in said unlocking position, said bearing portion of said switching lever faces toward said positioning device for enabling said positioning device to be disengaged from the respective said oval locating hole of said cover body. - View Dependent Claims (2, 3, 4, 5)
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Specification