IP Library Granted Patent US 8,904,908
Granted Patent B1
US 8,904,908 · App. 13/562,856 · Granted Dec 9, 2014

Ratcheting open end wrench

Inventor: John Richard Luhman (Traer, IA)
Assignee: Toolsmart, LLC
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Quick Facts
Patent No.
US 8,904,908
App. No.
13/562,856
Granted
Dec 9, 2014
Kind
B1
Abstract

An open-end ratcheting tool with handle for rotating hardware located within a circular enclosure of the tool. The void in the tool houses a spring attached to a tang of a pawl for biasing the pivoting pawl toward the hardware. A beveled tip provided on the pawl for engaging the hardware. A stop provided on the body, a notch in the void, and a mating tang on the pawl collectively maintain the off-center characteristic of the pawl and prevent pawl kick out under severe torque demand. An optional opener can be provided for manually drawing the pawl in an open configuration, and an optional center guide-ring can be provided on the inside of the hardware void to position the tool relative to the hardware. An alternate closed end version of the tool can be constructed, and the pawl can be repositioning for use on round hardware.

Claims (48)

1. A ratcheting wrench comprising:

a tool body having a handle at one end of the body for rotating the tool via ratcheting action and a curved enclosure at an opposite end of the body for receiving therein hardware to be rotated,

the body having a void therein, a rolling pivoting pawl located within the void of the body, a pawl spring attached to the pawl biasing the pawl toward an opposing side of the curved enclosure, and

said pawl constantly maintained in an off-center condition with a contact point of the pawl advancing toward the curved enclosure as the pawl pivots toward the spring and with the contact point of the pawl retracting from the curved enclosure as the pawl pivots away from the pawl spring.

2. A ratcheting wrench according to claim 1 further comprising:

a stop provided on the body to engage the pawl and limit pivoting action of the pawl under severe torque conditions.

3. A ratcheting wrench according to claim 1 further comprising:

a notch in the void and a mating tang on the pawl collectively maintain the off-center characteristic of the pawl and prevent pawl kick out under severe torque demand.

4. A ratcheting wrench according to claim 1 further comprising:

said pawl spring attaching via a first end to a tang of the pawl and attaching via an opposite second end to the body of the tool to bias the pawl toward the curved enclosure.

5. A ratcheting wrench according to claim 1 wherein the curved enclosure is a closed ended circle for receiving hardware within the curved enclosure.

6. A ratcheting wrench according to claim 1 wherein the pawl is repositioning sufficiently close to the curved enclosure for use on round hardware.

7. A ratcheting wrench comprising:

a tool body having a handle at one end of the body for rotating the tool via ratcheting action and a curved enclosure at an opposite end of the body for receiving therein hardware to be rotated,

the body having a void therein, a pivoting pawl located within the void of the body, a pawl spring attached to the pawl biasing the pawl toward the curved enclosure,

said pawl constantly maintained in an off-center condition with a contact point of the pawl advancing toward the curved enclosure as the pawl pivots toward the spring and with the contact point of the pawl retracting from the curved enclosure as the pawl pivots away from the pawl spring, and

a beveled tip provided on the pawl for engaging hardware located within the curved enclosure.

8. A ratcheting wrench comprising:

a tool body having a handle at one end of the body for rotating the tool via ratcheting action and a curved enclosure at an opposite end of the body for receiving therein hardware to be rotated,

the body having a void therein, a pivoting pawl located within the void of the body, a pawl spring attached to the pawl biasing the pawl toward the curved enclosure, and

said pawl constantly maintained in an off-center condition with a contact point of the pawl advancing toward the curved enclosure as the pawl pivots toward the spring and with the contact point of the pawl retracting from the curved enclosure as the pawl pivots away from the pawl spring wherein the curved enclosure is an open ended circle with an opening in its front to facilitate placing hardware within the curved enclosure.

9. A ratcheting wrench comprising:

a tool body having a handle at one end of the body for rotating the tool via ratcheting action and a curved enclosure at an opposite end of the body for receiving therein hardware to be rotated,

the body having a void therein, a pivoting pawl located within the void of the body, a pawl spring attached to the pawl biasing the pawl toward the curved enclosure,

said pawl constantly maintained in an off-center condition with a contact point of the pawl advancing toward the curved enclosure as the pawl pivots toward the spring and with the contact point of the pawl retracting from the curved enclosure as the pawl pivots away from the pawl spring,

an optional opener provided on the body and attaching to the pawl, and

a spring actuated thumb piece for manually drawing the pawl into an open configuration.

10. A ratcheting wrench according to claim 9 wherein said opener does not interfere with the normal ratcheting function of the pawl.

11. A ratcheting wrench comprising:

a tool body having a handle at one end of the body for rotating the tool via ratcheting action and a curved enclosure at an opposite end of the body for receiving therein hardware to be rotated,

the body having a void therein, a pivoting pawl located within the void of the body, a pawl spring attached to the pawl biasing the pawl toward the curved enclosure,

said pawl constantly maintained in an off-center condition with a contact point of the pawl advancing toward the curved enclosure as the pawl pivots toward the spring and with the contact point of the pawl retracting from the curved enclosure as the pawl pivots away from the pawl spring, and

an optional center guide-ring provided on the inside of the hardware opening to position the tool relative to the hardware.

12. A ratcheting wrench comprising:

a tool body having a handle at one end of the body for rotating the tool via ratcheting action and a curved enclosure at an opposite end of the body for receiving therein hardware to be rotated,

the body having a void therein, a pivoting pawl located within the void of the body, a pawl spring attached to the pawl biasing the pawl toward the curved enclosure,

said pawl constantly maintained in an off-center condition with a contact point of the pawl advancing toward the curved enclosure as the pawl pivots toward the spring and with the contact point of the pawl retracting from the curved enclosure as the pawl pivots away from the pawl spring, and

said pawl spring contained within an aperture provided in the body such that the aperture communicates with the void in the body.

13. A ratcheting wrench comprising:

a tool body having a handle at one end of the body for rotating the tool via ratcheting action and a curved enclosure at an opposite end of the body for receiving therein hardware to be rotated,

the body having a void therein, a pivoting pawl located within the void of the body, a pawl spring attached to the pawl biasing the pawl toward the curved enclosure,

said pawl constantly maintained in an off-center condition with a contact point of the pawl advancing toward the curved enclosure as the pawl pivots toward the spring and with the contact point of the pawl retracting from the curved enclosure as the pawl pivots away from the pawl spring, and

a three pointed object having a base that engages a notch in the void, said object having a tang adjacent the base for attachment to the pawl spring, and said object having a contact point opposite the base for engaging hardware.

14. A ratcheting wrench comprising:

a tool body having a handle at one end of the body for rotating the tool via ratcheting action and a curved enclosure at an opposite end of the body for receiving therein hardware to be rotated,

the body having a void therein, a pivoting pawl housed within the void of the body, a pawl spring attached to the pawl biasing the pawl toward the curved enclosure,

said pawl constantly maintained in an off-center condition with a contact point of the pawl advancing toward the curved enclosure as the pawl pivots toward the spring and with the contact point of the pawl retracting from the curved enclosure as the pawl pivots away from the pawl spring, and

outer shell hardware forming side walls for the void in the body that houses the pawl.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 31, 2012
From: LUHMAN, JOHN RICHARD
To: TOOLSMART, LLC
Reel/Frame 028687/0246 →
Continuity (1)
Provisional Application 61575589 · Aug 1, 2011