Guard attachment system with knurled clamp ring
First Claim
1. A removable power tool guard configured to cover an area proximate a spindle assembly of a power tool between a spindle assembly and a user of the tool, the guard further being configured to be securely mounted to a semi-elastic lower bearing housing supporting the spindle assembly of the power tool, wherein the guard, when mounted to the lower bearing housing, and when in use during operation of the tool, must remain in place even under conditions of flying debris, such as under conditions of an exploding, rotating abrasive grinder wheel mounted on the lower bearing housing of the tool, the guard comprising:
- a guard hood configured to cover an area proximate the spindle assembly between the spindle assembly and the user of the tool;
a clamp ring mechanically coupled to the guard hood;
the clamp ring depending from the guard hood;
the clamp ring having an inner circumferential portion;
the clamp ring being configured so that the inner circumferential portion at least partially surrounds, and can be secured tightly around, at least a portion of the semi-elastic lower bearing housing;
the clamp ring being configured so that at least a portion of the semi-elastic lower bearing housing can pass essentially concentrically through the clamp ring;
the inner circumferential portion of the clamp ring defining at least a partially-knurled surface; and
whereby, when securely tightened around the semi-elastic lower bearing housing, the at least partially-knurled surface of the clamp ring inner circumferential portion compresses into the semi-elastic lower bearing housing to securely mount the guard member to the tool.
2 Assignments
0 Petitions
Accused Products
Abstract
A removable guard for a hand-held power tool. The guard is configured to cover an area proximate a spindle assembly of the tool between the spindle assembly and a user of the tool. The guard is further configured to be securely mounted to a semi-elastic lower bearing housing supporting the spindle assembly of the tool. The guard, when mounted to the semi-elastic lower bearing housing of the tool, and when in use during operation of the tool, must remain functional under conditions of flying debris, such as under conditions of an exploding, rotating abrasive grinding wheel mounted on the spindle assembly of the tool.
The guard includes a clamp ring depending from a guard hood. The clamp ring'"'"'s inner circumferential portion has at least a partially-knurled surface, whereby when securely tightened around the semi-elastic lower bearing housing, the at least partially-knurled surface of the clamp ring inner circumferential portion compresses into the semi-elastic lower bearing housing to securely mount the guard to the tool.
132 Citations
51 Claims
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1. A removable power tool guard configured to cover an area proximate a spindle assembly of a power tool between a spindle assembly and a user of the tool, the guard further being configured to be securely mounted to a semi-elastic lower bearing housing supporting the spindle assembly of the power tool, wherein the guard, when mounted to the lower bearing housing, and when in use during operation of the tool, must remain in place even under conditions of flying debris, such as under conditions of an exploding, rotating abrasive grinder wheel mounted on the lower bearing housing of the tool, the guard comprising:
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a guard hood configured to cover an area proximate the spindle assembly between the spindle assembly and the user of the tool;
a clamp ring mechanically coupled to the guard hood;
the clamp ring depending from the guard hood;
the clamp ring having an inner circumferential portion;
the clamp ring being configured so that the inner circumferential portion at least partially surrounds, and can be secured tightly around, at least a portion of the semi-elastic lower bearing housing;
the clamp ring being configured so that at least a portion of the semi-elastic lower bearing housing can pass essentially concentrically through the clamp ring;
the inner circumferential portion of the clamp ring defining at least a partially-knurled surface; and
whereby, when securely tightened around the semi-elastic lower bearing housing, the at least partially-knurled surface of the clamp ring inner circumferential portion compresses into the semi-elastic lower bearing housing to securely mount the guard member to the tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A removable guard configured to attach to an angle grinder, the angle grinder having a motor housing portion and a gear housing portion, a semi-elastic lower bearing housing adjacent the gear housing portion with the semi-elastic lower bearing housing supporting a spindle assembly with the spindle extending outwardly from the lower bearing housing, the spindle including a tool attachment portion, the semi-elastic lower bearing housing having a flange to which the guard is secured so that when the angle grinder is in use, the guard will remain in place even under conditions such as an exploding, rotating abrasive grinder wheel mounted on the semi-elastic lower bearing housing of the angle grinder, the guard comprising:
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a guard hood configured to cover an area proximate the spindle assembly between the spindle assembly and a user of the angle grinder;
a clamp ring depending from, and coupled to, the guard hood;
the clamp ring having an inner circumferential portion;
the clamp ring being configured so that the inner circumferential portion at least partially surrounds, and can be secured tightly around, the flange of the semi-elastic lower bearing housing;
the clamp ring being configured so that at least a portion of the semi-elastic lower bearing housing can pass essentially concentrically through the clamp ring;
the inner circumferential portion of the clamp ring defining at least a partially-knurled surface; and
whereby, when securely tightened around the flange of the semi-elastic lower bearing housing, the at least partially-knurled surface of the clamp ring inner circumferential portion compresses into the flange of the semi-elastic lower bearing housing to securely mount the guard to the angle grinder. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. An angle grinder system comprising:
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an angle grinder comprising a motor, a motor-housing portion, and a gear-housing portion;
a semi-elastic lower bearing housing coupled to the gear housing portion;
the semi-elastic lower bearing housing supporting a spindle assembly, with a spindle extending outwardly from the lower bearing housing;
the spindle having a tool attachment portion;
the semi-elastic lower bearing housing comprising a flange to which a guard is secured;
the guard comprising a guard hood configured to cover an area proximate the spindle assembly between the spindle assembly and a user of the tool;
a clamp ring depending from, and being coupled to, the guard hood;
the clamp ring having an inner circumferential portion;
the clamp ring being configured so that the inner circumferential portion at least partially surrounds, and can be secured tightly around, at least a portion of the flange of the semi-elastic lower bearing housing;
the inner circumferential portion of the clamp ring defining at least a partially-knurled surface; and
whereby, when securely tightened around the flange of the semi-elastic lower bearing housing, the at least partially-knurled surface of the clamp ring inner circumferential portion compresses into the semi-elastic lower bearing housing to securely mount the guard to the tool. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification