Apparatus for holding and applying torque to a nut

Patent metadata

Field	Value
Publication number	US-9259827-B2
Application number	US-201314051516-A
Country	US
Kind code	B2
Filing date	Oct 11, 2013
Priority date	Oct 11, 2013
Publication date	Feb 16, 2016
Grant date	Feb 16, 2016

Abstract

A tool for holding and applying torque to a nut including a keyway. The tool includes a longitudinal body having a longitudinal axis and a body channel. A longitudinal key is disposed in the body channel with one end of the key configured to engage the keyway of the nut. A first key portion contacts the body channel while a second key portion extends over the body channel forming a gap between the key and the body channel prior to insertion of the key into the keyway of the nut. The second key portion is configured to be resiliently deflected radially inward toward the longitudinal axis of the longitudinal body when the second key portion engages the keyway of the nut.

First claim

What is claimed is:

1. An apparatus for holding and applying torque to a nut comprising a keyway, the apparatus comprising:
a longitudinal body comprising a longitudinal axis and a body channel, the body channel comprising a first body channel portion at a first end of the body channel, a second body channel portion at a second end of the body channel, and a channel base surface extending along the length of the body channel and facing radially outward from the longitudinal axis of the longitudinal body;
a set screw extending through the collar to retain the collar against the longitudinal body; and
a longitudinal key at least partially disposed in the body channel, the longitudinal key comprising a first key portion at the first end of the body channel, a second key portion at the second end of the body channel configured to engage the keyway of the nut, and a key base surface extending along the length of the longitudinal key and facing radially inward toward the longitudinal axis of the longitudinal body,
wherein the key base surface of the first key portion contacts the channel base surface and wherein the key base surface of the second key portion extends over the channel base surface forming a gap between the key base surface of the second key portion and the channel base surface prior to insertion of the second key portion into the keyway of the nut; and
wherein the second key portion is configured to be resiliently deflected radially inward toward the longitudinal axis of the longitudinal body when the second key portion engages the keyway of the nut.

2. The apparatus of claim 1 , further comprising a collar surrounding the first key portion and radially compressing the first key portion against the first body channel portion.

3. The apparatus of claim 2 , wherein the first key portion further comprises a groove and a rib proximate to the groove; and
the collar further comprises a protrusion extending from the inner surface of the collar and a recess extending into the inner surface of the collar, the recess proximate to the protrusion,
wherein the protrusion of the collar is received by the groove of the first key portion and the rib of the first key portion is received by the recess of the collar to retain the longitudinal key in the body channel.

4. The apparatus of claim 1 , wherein the second key portion comprises a chamfered portion configured to engage the keyway of the nut and resiliently deflect the second key portion radially inward toward the longitudinal axis of the longitudinal body when the second key portion engages the keyway of the nut.

5. The apparatus of claim 1 , wherein the first body channel portion has a first depth and the second body channel has a second depth deeper than the first depth, wherein a step is formed between the first body channel portion and the second body channel portion.

6. The apparatus of claim 1 , wherein the first key portion has a first depth and the second key portion has a second depth shallower than the first depth, wherein a step is formed between the base surface of the first key portion and the base surface of the second key portion.

7. The apparatus of claim 1 , wherein the body channel is on an outer surface of the longitudinal body.

8. The apparatus of claim 1 , wherein the first end of the longitudinal body comprises an opening configured for receiving a driver tool for applying torque to the longitudinal body.

9. An apparatus for holding and applying torque to a nut comprising a keyway, the apparatus comprising:
a longitudinal body comprising a longitudinal axis and a body channel on an outer surface of the longitudinal body, the body channel comprising a first body channel portion having a first depth at a first end of the body channel, a second body channel portion having a second depth deeper than the first depth at a second end of the body channel, a channel base surface extending along the length of the body channel and facing radially outward from the longitudinal axis of the longitudinal body, and a step formed between the first body channel portion and the second body channel portion, wherein the first end of the longitudinal body comprises an opening configured for receiving a driver tool for applying torque to the longitudinal body;
a longitudinal key at least partially disposed in the body channel, the longitudinal key comprising a first key portion at the first end of the body channel, a second key portion at the second end of the body channel comprising a chamfered portion configured to engage the keyway of the nut, and a key base surface extending along the length of the longitudinal key and facing radially inward toward the longitudinal axis of the longitudinal body; and
a collar surrounding the first key portion and radially compressing the first key portion against the first body channel portion,
wherein the key base surface of the first key portion contacts the channel base surface and wherein the key base surface of the second key portion extends over the channel base surface forming a gap between the key base surface of the second key portion and the channel base surface prior to insertion of the second key portion into the keyway of the nut, and
wherein the second key portion is configured to be resiliently deflected radially inward toward the longitudinal axis of the longitudinal body when the second key portion is inserted into the keyway of the nut.

10. The apparatus of claim 9 , wherein
the first key portion further comprises a groove and a rib proximate to the groove; and
the collar further comprises a protrusion extending from the inner surface of the collar and a recess extending into the inner surface of the collar, the recess proximate to the protrusion,
wherein the protrusion of the collar is received by the groove of the first key portion and the rib of the first key portion is received by the recess of the collar to retain the longitudinal key in the body channel.

11. The apparatus of claim 9 , further comprising a set screw extending through the collar to retain the collar against the longitudinal body.

12. An apparatus for holding and applying torque to a nut comprising a keyway, the apparatus comprising:
a longitudinal body comprising a longitudinal axis and a body channel, the body channel comprising a first body channel portion at a first end of the body channel, a second body channel portion at a second end of the body channel, and a channel base surface extending along the length of the body channel and facing radially outward from the longitudinal axis of the longitudinal body;
a longitudinal key at least partially disposed in the body channel, the longitudinal key comprising a first key portion having a first depth at the first end of the body channel, a second key portion having a second depth shallower than the first depth at the second end of the body channel comprising a chamfered portion configured to engage the keyway of the nut, and a key base surface extending along the length of the longitudinal key and facing radially inward toward the longitudinal axis of the longitudinal body, and a step formed between the base surface of the first key portion and the base surface of the second key portion; and
a collar surrounding the first key portion and radially compressing the first key portion against the first body channel portion,
wherein the key base surface of the first key portion contacts the channel base surface and wherein the key base surface of the second key portion extends over the channel base surface forming a gap between the key base surface of the second key portion and the channel base surface prior to insertion of the second key portion into the

Assignees

• Gen Electric

Inventors

• Barsukov Mykhaylo
• Mcdonald Benjamin Edward

Classifications

• B25B15/004 Primary

  characterised by cross-section · CPC title

• B25B23/105

  the gripping device being an integral part of the driving bit · CPC title

• B25B23/108 Primary

  the driving bit being a Philips type bit, an Allen type bit or a socket · CPC title

• B25B13/54

  Internal grip wrenches {(B25B13/5083 takes precedence)} · CPC title