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For more than a century, The Hilliard Corporation has helped customers solve complex industrial challenges with application-specific products and engineering-driven support.

Hilliard Patents

U.S. Patent #

Differential Item # 6203-01-XXX

Item Number	RE38012	6622837	6629590	6722484	6857515	7410042	7717250	8651986	8857294	8613351	9819513	8857589	8840514	9022195
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Centrifugal Clutch Item #

Patent number 6857515 apply to the below product(s):

Couplings Item Number
LD4T-1 LD4T-2 LD4T-3 LD4T-4 LD4T-5 LD4T-6 LD4T-8 LD4T-9

Special Designs Item Number
LD4D-1 LD4D-2 LD4D-3 LD4D-4

Mechanisms Item Number
LD4M-1 LD4M-2 LD4M-3 LD4M-4 LD4M-5 LD4M-6 LD4M-7

Sprockets Item Number
LD4S-4-Bulk LD4S-4-PKGD LD4S-4L-PKGD LD4S-4L-CASE LD4S-5-Bulk LD4S-5-PKGD LD4S-5L-PKGD LD4S-5L-CASE LD4S-6-Bulk LD4S-6-PKGD LD4S-6L-PKGD LD4S-6L-CASE LD4S-7-Bulk LD4S-7-PKGD LD4S-7L-PKGD LD4S-7L-CASE LD4S-9L-Bulk LD4S-9L-PKGD LD4S-11-Bulk LD4S-11-Case LD4S-12-Bulk LD4S-12-PKGD LD4S-13-Bulk LD4S-13-PKGD LD4S-21-CASE

Sprockets Item Number
LD4S-22-CASE LD4S-23-CASE LD4S-24-CASE LD4S-25-BULK LD4S-26-CASE LD4S-27-CASE LD4S-28-CASE LD4S-29-CASE LD4S-30-CASE LD4S-31-CASE LD4S-32-CASE LD4S-33-CASE LD4S-34-CASE LD4S-35-CASE LD4S-36-CASE LD4S-37-CASE LD4S-38-Bulk LD4S-38-Case LD4S-39-CASE LD4S-40-CASE LD4S-41-CASE LD4S-42-CASE LD4S-43-CASE LD4S-44-CASE LD4S-45-CASE

Sprockets Item Number
LD4S-46-CASE LD4S-47-CASE LD4S-48-CASE LD4S-49-CASE LD4S-50-CASE LD4S-51-CASE LD4S-52-CASE LD4S-54L-PKGD LD4S-54L-CASE LD4S-55L-PKGD LD4S-55L-CASE LD4S-8-PKGD LD4S-58L-CASE LD4S-57 LD4S-FURY LD4S-FURY-CASE LD4S-BLAZE LD4S-BLAZE-CASE LD4S-FLURRY LD4S-FLURY-CASE LD4S-BlLIZZARD LD4S-BLIZD-CASE LD4S-FLAME LD4S-FLAME-CASE

Pulleys Item Number
LD4P-52 LD4P-53 LD4P-53-PKGD LD4P-56 LD4P-65 LD4P-61 LD4P-61-PKGD LD4P-62 LD4P-62-PKGD LD4P-63 LD4P-63-PKGD LD4P-66 LD4P-50 LD4P-50-PKGD LD4P-54 LD4P-55 LD4P-58 LD4P-60 LD4P-60-PKGD LD4P-64 LD4P-64-PKGD LD4P-74 LD4P-75 LD4P-76 LD4P-77

Pulleys Item Number
LD4P-78 LD4P-79 8444-01-048 LD4P-67 LD4P-68 LD4P-69 LD4P-70 LD4P-71 LD4P-72 LD4P-73 8444-01-055 LD4P-80 LD4P-81 LD4P-82 LD4P-83 LD4P-84 LD4P-85 LD4P-86 LD4P-87 LD4P-88 LD4P-89 LD4P-90 LD4P-91 LD4P-92 LD4P-93

Pulleys Item Number
LD4P-94 LD4P-95 LD4P-96 LD4P-97 LD4P-98 LD4P-99 LD4P-100 LD4P-101 LD4P-102 LD4P-107

Patent numbers 6857515 and 7717250 apply to the below product(s):

Inferno Item Number
LD4S-BLAZE LD4S-BLAZE-CASE LD4S-BLIZZARD LD4S-BLIZZARD-CASE LD4S-FLAME LD4S-FLAME-CASE

Brake Item #

Patent number 6439355 apply to the below product(s):

MK 350
MK 750
MK 1400
MK 2000
MK 4800

Friction Drive Item #

Patent number 8857594 apply to the below product(s):

6345-01-010
6350-01-001
6355-01-002
6355-01-003

Cartridge Filter Item #

Patent number 7267770 apply to the below product(s):

DD-700-147

Duplex Filter Model #

Patent Pending apply to the below product