IP Library Granted Patent US 7,967,277
Granted Patent B2
US 7,967,277 · App. 12/042,598 · Granted Jun 28, 2011

Combination hand tool bar

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Quick Facts
Patent No.
US 7,967,277
App. No.
12/042,598
Granted
Jun 28, 2011
Kind
B2
Abstract

In accordance with the present invention, there is provided a combination hand tool bar device suitable for pulling nails and other materials from surfaces, with improved user ergonomics and efficient force transfer. The device includes a hook end and a pry end joined by a bar shank member interposed there between. The hook end further comprises a compound curve projecting in the same direction from the bar shank member as the pry end enabling an increased user throw and ergonomic comfort.

Claims (20)

1. A combination hand tool bar, comprising:

(a) a bar shank member spacing a hook end portion at a proximate end and a curved pry end portion at a distal end thereof;

(b) said bar shank member defining a first plane having a front side and a back side;

(c) said hook end portion rising in a plane opposite said curved pry end portion and forming a curve therefrom;

(d) said hook end portion and said curved pry end portion terminating on the same side of said first plane, whereby said hand tool bar provides increased lever throw and user comfort;

(e) a fixed angle defined between said hook end portion and said first plane being less than sixty (60) degrees, whereby said hand tool bar enables an increased leverage during a use; and

(f) a second plane, arranged perpendicular to said first plane and extending along the length of said hand tool bar; wherein said bar shank member, said curved pry end portion, and said hook end portion are arranged along said second plane.

2. A combination hand tool bar, according to claim 1 , further comprising:

a nail slot element on each of said hook end and said curved pry end portions.

3. A combination hand tool bar, according to claim 1 , wherein:

said angle defined is preferably between approximately 35-55 degrees.

4. A combination hand tool bar, according to claim 3 , wherein:

said angle is more preferably between approximately 40-50 degrees.

5. A combination hand tool bar, according to claim 1 , wherein:

said angle defined is preferably between approximately 0-25 degrees.

6. A combination hand tool bar, according to claim 5 , wherein:

said angle defined is more preferably between approximately 0-15 degrees.

7. A combination hand tool bar, according to claim 1 , wherein:

(a) said hook end portion includes an outer arc surface comprising a complex curve; and

(b) at least a portion of said complex curve having a tangent generally orthogonal to said first plane of said bar shank member, whereby a force transfer is improved during said use.

Assignments (2)
SECURITY INTEREST Recorded Jun 22, 2021
From: VAUGHAN & BUSHNELL MANUFACTURING COMPANY
To: FIFTH THIRD BANK, NATIONAL ASSOCIAITON
Reel/Frame 056626/0416 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 5, 2008
From: CHAMBERS, DANIEL
To: VAUGHAN & BUSHNELL MANUFACTURING COMPANY
Reel/Frame 020603/0614 →