Tamper proof seal assembly

Patent metadata

Field	Value
Publication number	US-11580885-B2
Application number	US-201916582900-A
Country	US
Kind code	B2
Filing date	Sep 25, 2019
Priority date	Sep 28, 2018
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

A tamper proof locking mechanism incorporating a first fixture for attachment to an index protective cover, a second fixture for attachment to an instrument, and a third fixture for connecting the first fixture to the second fixture. The first fixture may have a receptacle, the second fixture may have a plate with an opening, and the third fixture may have a protrusive structure that fits into the receptacle of the first fixture and into the opening in the plate to connect the first fixture to the second fixture. The protrusive structure may have a rivet that is partially embedded with a plastic-like material that reveals tampering when an attempt is made to break a connection between the first fixture and the second fixture.

First claim

What is claimed is:

1. A method for a tamper proof connection comprising:
attaching a receptacle fixture to a first apparatus;
obtaining a second apparatus with a plate, having an opening;
connecting the first apparatus to the second apparatus by:
inserting the plate into the receptacle fixture; and
inserting a protruding structure into the receptacle and through the opening of the plate to connect the receptacle fixture to the plate, and thus resulting in a connection of the first apparatus and the second apparatus to each other; and

wherein:
the protruding structure comprises a rivet having a portion on an outside surface of the rivet wrapped with a plastic material and having the plastic material internally in the rivet, and having the plastic material molded with a surface over a first end of the rivet and molded with a surface at a second end of the rivet;
the rivet secures the receptacle by being inserted in the opening of the plate;
the surface over the first end of the rivet is embossed with a pattern;
the second end of the rivet is flanged toward the surface of the receptacle to prevent removal of the rivet from the opening of the plate; and
an attempted or actual removal of the rivet to eliminate the connection between the receptacle and plate indicates a tampering according to a distortion of the pattern embossed in the surface of the plastic material over the first end of the rivet.

2. The method of claim 1 , further comprising embossing a pattern on a surface of the plastic material at the second end of the rivet.

3. The method of claim 2 , wherein the attempted or actual removal of the rivet from the opening in the plate indicates a tampering according to a distortion of the pattern embossed on the surface at the second end of the rivet.

4. The method of claim 2 , wherein:
the surface over the first end of the rivet is embossed with a pattern, the surface of the second end of the rivet embossed with a pattern, and the second end of the rivet flanged with a set of pliers;
the pattern for the surface over the first end of the rivet is on a first die situated on a first jaw of the set of pliers;
the pattern for the surface over the second end of the rivet is on a second die situated on a second jaw of the set of pliers;
the second jaw of the set of pliers has a component around the second die for flanging the second end of the rivet; and
the set of pliers are aligned with the rivet so that when the pliers are closed, the first die embosses the surface at the first end of the rivet, the second die embosses the surface at the second end of the rivet, and the component around the second die flanges the second end of the rivet, so as to seal the protruding structure to the receptacle fixture with the rivet securing the plate via the opening in the plate.

5. The method of claim 1 , further comprising:
placing a collar around the second end of the rivet; and
wherein the collar is attached to or a part of the second apparatus.

6. The method of claim 5 , wherein the collar, the rivet and the plate are composed of a hardened metal material.

Assignees

• Honeywell Int Inc

Inventors

• Pries Henning
• Wallmeyer August
• Kreftsiek Sandra
• Temme Hans-Werner

Classifications

• G09F2003/0277

  Tamper resistant · CPC title

• E05B39/02 Primary

  with destructible seal closures or paper closures · CPC title

• G09F3/0317 Primary

  having bolt like sealing means (means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it F16B21/00) · CPC title

• E05B65/0089

  for utility meters or the like · CPC title

• B65D27/30

  with special means for indicating unauthorised opening · CPC title