IP Library › Granted Patent US 7,097,032
Granted Patent B2
US 7,097,032 · App. 10/841,106 · Granted Aug 29, 2006

Chain pin for hinge conveyor chains

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Quick Facts
Patent No.
US 7,097,032
App. No.
10/841,106
Granted
Aug 29, 2006
Kind
B2
Abstract

A chain module according to the invention comprises at least one link from ferritic-pearlitic stainless steel and at least one chain pin, which chain pin comprises an outwardly facing surface formed from a steel alloy which is substantially non-seizing to the ferritic-pearlitic stainless steel of said link. Preferably, the chain pin comprises a steel alloy with more than 0.6 wt. % of carbon and more than 12 wt. % of chromium.

Claims (21)

1. A hinge conveyor chain, comprising at least two links formed from ferritic-pearlitic stainless steel, which links are hingedly coupled by means of at least one stainless-steel substantially cylindrical chain pin, wherein the chain pin comprises an outwardly facing surface formed from a steel alloy with more than 0.6 wt. % of carbon and more than 12 wt. % of Cr, and the chain pin is substantially non-seizing to the ferritic-pearlitic stainless steel of the link.

2. A hinge conveyor chain according to claim 1 , in which each of said at least two links include a top plate which forms a conveying surface, which top plate is, near a front and back side, provided with link ends, wherein the link ends of adjacent links are hingedly coupled by said stainless-steel chain pin reaching through the link ends.

3. A hinge conveyor chain according to claim 1 , wherein said chain pin comprises a steel alloy with 15–19 wt. % of Cr.

4. A hinge conveyor chain according to claim 1 , wherein said steel alloy is present as an outer layer on said chain pin, preferably with a layer thickness of 0.5–1.5 mm.

5. A hinge conveyor chain according to claim 1 , wherein said chain pin at least substantially consists of said steel alloy.

6. A hinge conveyor chain according to claim 1 , wherein said chain pin comprises a steel alloy with the following composition (in wt. %):

C

0.95–1.2 

Cr

16–18

Mn

≦1

Mo

≦0.75

P

≦0.04

Si

≦1

S

≦0.03.

7. A hinge conveyor chain according to claim 1 , wherein said ferritic-pearlitic stainless steel is selected from a group consisting of steel having a Werkstoffnummer (material number) of 1.4589, 1.4016 and 1.4017.

Assignments (6)
RELEASE OF SECURITY INTEREST Recorded Oct 28, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
To: REXNORD INDUSTRIES, LLC; SANITARY-DASH MANUFACTURING CO., INC.; CAMBRIDGE INTERNATIONAL, INC.
Reel/Frame 057966/0319 →
CORRECTIVE ASSIGNMENT TO REMOVE PATENTS NUMBERS 6330941 AND 6523680 FROM THE LIST PREVIOUSLY RECORDED ON REEL 018194 FRAME 0001. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT. Recorded Jul 6, 2016
From: REXNORD INDUSTRIES, LLC F/K/A ADDAX, INC.; CLARKSON INDUSTRIES, INC./HIGHFIELD MANUFACTURING COMPANY; PT COMPONENTS, INC.; REXNORD CORPORATION; REXNORD INDUSTRIES, INC.; REXNORD NORTH AMERICA HOLDINGS, INC.; W.M. BERG, INC.; CHASE ACQUISITION I, INC.; CHASE MERGER SUB, INC.; PRAGER INCORPORATED; PT COMPONENTS, INC.; RBS ACQUISITION CORPORATION; RBS CHINA HOLDINGS, L.L.C.; RBS GLOBAL, INC.; REXNORD INTERNATIONAL INC.; REXNORD PUERTO RICO INC.; THE FALK SERVICE CORPORATION
To: MERRILL LYNCH CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT
Reel/Frame 039439/0816 →
ASSIGNMENT Recorded Mar 27, 2007
From: MERRILL LYNCH CAPITAL CORPORATION
To: CREDIT SUISSE, AS ADMINISTRATIVE AGENT
Reel/Frame 019063/0875 →
RECORD TO CORRECT THE CONVEYING PARTIES ON A SECURITY AGREEMENT DOCUMENT PREVIOUSLY RECORDED ON REEL 017971 FRAME 0375 Recorded Aug 31, 2006
From: REXNORD INDUSTRIES, LLC F/K/A ADDAX, INC.; CLARKSON INDUSTRIES, INC./HIGHFIELD MANUFACTURING COMPANY; PT COMPONENTS, INC.; REXNORD CORPORATION; REXNORD INDUSTRIES, INC.; REXNORD NORTH AMERICA HOLDINGS, INC.; W.M. BERG, INC.; CHASE ACQUISITION I, INC.; CHASE MERGER SUB, INC.; PRAGER INCORPORATED; PT COMPONENTS, INC.; RBS ACQUISITION CORPORATION; RBS CHINA HOLDINGS, L.L.C.; RBS GLOBAL, INC.; REXNORD INTERNATIONAL INC.; REXNORD PUERTO RICO INC.; THE FALK SERVICE CORPORATION
To: MERRILL LYNCH CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT
Reel/Frame 018194/0001 →
SECURITY AGREEMENT Recorded Jul 21, 2006
From: REXNORD CORPORATION
To: MERRILL LYNCH CAPITAL CORPORATION
Reel/Frame 017971/0375 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 9, 2004
From: HARTMAN, STEPHAN DAVID CORNELIS; VERDUIJN, GIJSBERTUS JOHANNES
To: REXNORD FLATTOP EUROPE B.V.
Reel/Frame 015665/0525 →