Lubricant sheet for a shredder

Patent metadata

Field	Value
Publication number	US-12465922-B2
Application number	US-202318115193-A
Country	US
Kind code	B2
Filing date	Feb 28, 2023
Priority date	Mar 2, 2022
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A lubricant sheet comprises a blank of material folded along a fold line into a folded configuration to form a lubricant containment pocket; a lubricant in the lubricant containment pocket; and a primary barrier for the lubricant. The primary barrier extends around and seals the lubricant containment pocket to hold the lubricant in the lubricant containment pocket. The blank of material includes a fold of material along the fold line forming a secondary barrier for the lubricant. When the lubricant in the lubricant containment pocket is being compressed during shredding of the lubricant sheet so as to cause some of the lubricant to be released through the primary barrier, the secondary barrier is configured to deflect the released lubricant that is released towards the secondary barrier.

First claim

What is claimed is:

1 . A lubricant sheet configured to be used in a shredder to provide lubrication between cutter elements of the shredder, the lubricant sheet comprising:
a blank of material folded along a fold line into a folded configuration to form a lubricant containment pocket; a lubricant in the lubricant containment pocket; and a primary barrier for the lubricant, the primary barrier extending around and sealing the lubricant containment pocket so as to hold the lubricant in the lubricant containment pocket; the blank of material comprising a fold of material along the fold line forming a secondary barrier for the lubricant, wherein the secondary barrier is configured to deflect lubricant that is released from the lubricant containment pocket through the primary barrier and towards the secondary barrier in response to being compressed during shredding of the lubricant sheet so as to relieve pressure in the released lubricant and to maintain the released lubricant in place for further lubrication of the cutter elements of the shredder.

2 . The lubricant sheet of claim 1 , wherein the blank of material includes peripheral portions extending peripherally around the primary barrier, and
wherein the secondary barrier and each of a peripheral portion of the peripheral portions between the primary barrier and the secondary barrier form a manifold for the released lubricant.

3 . The lubricant sheet of claim 2 , wherein the manifold having lateral edges, the manifold is open on the lateral edges so as to equalize any pressure buildup of the released lubricant and so as to enable venting of the released lubricant along a longitudinal direction of the fold of material and in a plane of the blank of material.

4 . The lubricant sheet of claim 2 , wherein the manifold includes directional seals that are configured to direct or deflect the released lubricant.

5 . The lubricant sheet of claim 2 , wherein the manifold includes directional seals that are configured to form a convoluted tortuous path for the released lubricant.

6 . The lubricant sheet of claim 2 , wherein the manifold includes pressure relieving vents that are configured to relieve the pressure in the released lubricant.

7 . The lubricant sheet of claim 2 , wherein the manifold includes a material that is configured to absorb and redistribute the released lubricant so as to slow down or inhibit flow of the released lubricant.

8 . The lubricant sheet of claim 1 , wherein the fold of the material is disposed between a first area of the blank of material and a second area of the blank of material,
wherein the first area and the second area form surfaces of the lubricant containment pocket, wherein each of the first area and the second area have edges, wherein the edges of the first area and the edges of the second area correspond to each other and together form edges of the lubricant containment pocket, and wherein the primary barrier is formed along the edges of the lubricant containment pocket.

9 . The lubricant sheet of claim 8 , wherein the fold of material is a first fold of material and the secondary barrier is a first secondary barrier,
wherein the blank of material includes a second fold line that is disposed either above the first area or below the second area of the blank of material, wherein the blank of material includes a second fold of material along the second fold line forming a second secondary barrier for the lubricant, and wherein the first secondary barrier and the second secondary barrier are disposed on opposing longitudinal ends of the lubricant sheet.

10 . The lubricant sheet of claim 8 , wherein the fold of material is a first fold of material and the secondary barrier is a first secondary barrier,
wherein the blank of material includes at least one additional fold over material portion protruding outwardly from at least one side of either an upper half of the blank of material or a lower half of the blank of material, wherein the at least one additional fold over material portion folded over on to the blank of material along at least one additional fold line forming a second secondary barrier, and wherein the first secondary barrier and the second secondary barrier are disposed on opposing longitudinal ends of the lubricant sheet.

11 . The lubricant sheet of claim 10 , wherein the at least one additional fold over material portion includes three additional fold over material portions, the at least one additional fold line includes three additional fold lines, and the at least one side includes three sides,
each of the three additional fold over material portions protrudes outwardly from a corresponding side of either the upper half of the blank of material or the lower half of the blank of material, each of the three additional fold over material portions is folded over on to the blank of material along a corresponding additional fold line forming the second secondary barrier, a third secondary barrier, and a fourth secondary barrier, respectively, and wherein the third secondary barrier and the fourth secondary barrier are disposed on opposing transverse ends of the lubricant sheet.

12 . A lubricant sheet assembly configured to be used in a shredder to provide lubrication between cutter elements of the shredder, the lubricant sheet assembly comprising:
at least two blanks of material overlapping each other to form a lubricant containment pocket; a lubricant in the lubricant containment pocket; and a primary barrier for the lubricant, the primary barrier extending around and sealing the lubricant containment pocket so as to hold the lubricant in the lubricant containment pocket; at least one of the blanks of material folded along a fold line and comprising a fold of material along the fold line forming a secondary barrier for the lubricant, wherein the secondary barrier is configured to deflect lubricant that is released from the lubricant containment pocket through the primary barrier and towards the secondary barrier in response to being compressed during shredding of the lubricant sheet assembly so as to relieve pressure in the released lubricant and to maintain the released lubricant in place for further lubrication of the cutter elements of the shredder.

Assignees

• Fellowes Inc

Inventors

• Matlin Tai Hoon K

Classifications

• F16N25/00

  Distributing equipment {with or without proportioning devices} · CPC title

• B02C2018/166

  Lubricating the knives of the cutting mechanisms · CPC title

• B02C18/16

  Details · CPC title

• B02C18/0007

  specially adapted for disintegrating documents · CPC title

• F16N19/00

  Lubricant containers for use in lubricators or lubrication systems · CPC title