REMOVABLE LONG-LIVED AND REUSABLE U-SHAPED HYBRID NUT

• US 20110311331A1
• Filed: 02/04/2010
• Published: 12/22/2011
• Est. Priority Date: 02/12/2009
• Status: Active Grant

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Tejero Salinero, Isaac
• Granted Patent: US 9,267,529 B2
• Time in Patent Office: Days
• US Class Current: 411/175
• CPC Class Codes: F16B 37/02 made of thin sheet material fastening to surfaces F16B37/04 ; used as lock-nuts F16B39/14
• CPC Class Codes: F16B 37/041 Releasable devices F16B37/044, F16B37/045 take precedence

Abstract

A NUT WITH A C-SHAPED PROFILE, of the type formed by a punched metal sheet folded onto itself for fixing onto a panel, wherein one of the arms, i.e. the upper base, has a hole for the arrangement of a screwed device with at least one thread and wherein the other arm, i.e. the lower base, which is aligned with the axis of the preceding hole, has another hole for receiving the nut tightening screw, said upper base being provided with incisions which define horizontal connecting portions separated from the body of said upper base and longitudinal connecting portions which form an extension of the former and which join together said upper base and lower base, which has a retaining claw which is designed to facilitate application of a tool for slackening the pressure which the nut applies to the panel to which it is fixed; which has a bottom rear flange and side stops on said upper base which form an anti-rotation mechanism when a screw is tightened on the nut; said bottom rear flange freeing from pressure said upper base during assembly on the panel; and said longitudinal connecting portions are overdimensioned, i.e. their height is greater than the sum of the greatest thickness “P” of the panel foreseen for use with said nut and the height “h” of said retaining claw in relation to said lower base.

Claims

1. A NUT WITH A C-SHAPED PROFILE, of the type formed by a punched metal sheet folded onto itself for fixing onto a panel, wherein one of the arms, i.e. the upper base, has a hole for the arrangement of a screwed device with at least one thread and wherein the other arm, i.e. the lower base, which is aligned with the axis of the preceding hole, has another hole for receiving the nut tightening screw, said upper being provided with incisions which define horizontal connecting portions separated from the body of said upper base and longitudinal connecting portions which form an extension of the former and which join together said upper base and lower base, which has a retaining claw which is designed to facilitate application of a tool for slackening the pressure which the nut applies to the panel to which it is fixed;

which has a bottom rear flange and side stops on said upper base which form an anti-rotation mechanism when a screw is tightened on the nut;

said bottom rear flange freeing from pressure said upper base during assembly on the panel; and

said longitudinal connecting portions are overdimensioned, i.e. their height is greater than the sum of the greatest thickness “

P”

of the panel foreseen for use with said nut and the height “

h”

of said retaining claw in relation to said lower base.

2. THE NUT WITH A C-SHAPED PROFILE as claimed in claim 1, wherein said retaining claw has a form which is approximately that of an inverted “

U”

in a transverse plane close to the plane of said lower base.

3. THE NUT WITH A C-SHAPED PROFILE as claimed in claim 1, which has rear reliefs and front reliefs designed to facilitate the action of a tool for freeing said nut from the panel.

4. THE NUT WITH A C-SHAPED PROFILE as claimed in claim 1, which has lateral projections on said bottom rear flange and said side stops, acting as stops, these limiting the possible travel during interaction of said movable parts with each other.

5. THE NUT WITH A C-SHAPED PROFILE as claimed in claim 1, wherein said screwed device is a threaded cylinder with a multiple thread.

6. THE NUT WITH A C-SHAPED PROFILE as claimed in claim 1, wherein an approximately conical or spherical geometrical form is present at the joining zone between said threaded cylinder and said upper base.

7. THE NUT WITH A C-SHAPED PROFILE as claimed in claim 1, wherein said threaded cylinder is modified being provided with a self-locking multiple threading.

8. THE NUT WITH A C-SHAPED PROFILE as claimed in claim 1, wherein said screwed device is formed by a helical line.

9. THE NUT WITH A C-SHAPED PROFILE as claimed in claim 1, wherein said helical line has radial incisions.