Assignee
PROGRESS MFG INC
US16 patents
Top patents by PatentIndex Score
US7025370B2Apr 11, 2006
Trailer hitch head and method of manufacturing
PROGRESS MFG INC21 citations85
US7934742B2May 3, 2011
Apparatus for raising a spring arm on a trailer hitch
PROGRESS MFG INC12 citations83
US7967320B2Jun 28, 2011
Attachment for a trailer hitch bracket
PROGRESS MFG INC17 citations81
US10252588B2Apr 9, 2019
Trailer hitch system
PROGRESS MFG INC3 citations73
US11813904B2Nov 14, 2023
Trailer hitch system with scale ball mount
PROGRESS MFG INC2 citations72
US10675931B2Jun 9, 2020
Trailer bracket for sway control towing system
PROGRESS MFG INC3 citations70
US10800219B2Oct 13, 2020
Adjustable trailer hitch ball mount with integral lock
PROGRESS MFG INC3 citations67
US10960719B2Mar 30, 2021
Apparatus and method for measuring force on weight distribution hitches
PROGRESS MFG INC4 citations66
US9579940B2Feb 28, 2017
Rotating retainer clip for weight distribution hitch spring arm retaining pin
PROGRESS MFG INC6 citations64
US10252381B2Apr 9, 2019
Jack foot retraction system
PROGRESS MFG INC1 citations62
US12227041B2Feb 18, 2025
Powered arm lifter system and method of automating weight distribution
PROGRESS MFG INC0 citations58
US9321434B2Apr 26, 2016
Retractable jack foot
PROGRESS MFG INC1 citations49
US12415391B2Sep 16, 2025
System and method for attaching a trailer to a tow vehicle
PROGRESS MFG INC0 citations47
US11821781B2Nov 21, 2023
Apparatus and method for determining weight distribution
PROGRESS MFG INC0 citations47
US9844986B2Dec 19, 2017
Apparatus and method of installing an internal locking ring to reinforce an adjustable trailer hitch
PROGRESS MFG INC1 citations46
US9352624B2May 31, 2016
System and method for reinforcing an adjustable trailer hitch
PROGRESS MFG INC1 citations46