IP Library Granted Patent US 12,734,658
Granted Patent B1
US 12,734,658 · App. 19/192,543 · Granted Sep 15, 2026

O-ring installation device

Inventors: Andrew D. Rockwell (Marana, AZ); Jonathan R. Chittenden (West Lafayette, IN)
Assignee: Caterpillar Inc.
B25B27/0092B23P15/06F16J1/00F16J9/00
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,734,658
App. No.
19/192,543
Granted
Sep 15, 2026
Kind
B1
Abstract

A device for installing O-rings within a cylinder is disclosed and includes a top plate, a central plate, and a bottom plate each disposed along a plate axis. The top plate includes a tool catch extending out from the top face and a slot extending through the top plate and tool catch towards the plate axis. The central plate and bottom plate each include a circumferential surface and a guide extending out from a top surface. The guide has an engagement surface disposed proximal to the circumferential surface that engages an inner surface of an O-ring and hold it such that an outer surface of the O-ring is in line with the circumferential surface.

Claims (23)

1 . A device for installing a plurality of O-rings within a cylinder, the device comprising:

a top plate disposed along a plate axis and including:

a perimeter surface;

a top face opposite a bottom face;

a tool catch extending outwards from the top face, the tool catch disposed proximal to the perimeter surface; and

a first slot extending through the perimeter surface and towards a center of the top plate, the first slot splitting the tool catch into a plurality of tool catch segments;

a central plate disposed along the plate axis and including:

a first circumferential surface;

a second slot extending through the first circumferential surface towards the plate axis;

a top surface opposite a bottom surface; and

a first guide extending from the top surface, the first guide disposed proximal to the first circumferential surface and including a first engagement surface configured to engage an inner portion of one of the O-rings and position it such that an outer portion of the O-ring is generally in line with the first circumferential surface but does not extend past the first circumferential surface; and

a bottom plate disposed along the plate axis and including:

a second circumferential surface having the same diameter as the first circumferential surface;

a top side opposite a bottom side;

a groove extending through a portion of the first circumferential surface and the top side and towards a plate axis of the bottom plate; and

a second guide extending from the top side, the second guide disposed proximal to the second circumferential surface and including a second engagement surface configured to engage an inner surface of a different O-ring than first engagement surface and position it such that an outer surface of the O-ring is generally line with the second circumferential surface but does not extend past the second circumferential surface.

2 . The device of claim 1 , wherein the top surface and bottom surface define a first thickness, and the top side and the bottom side define a second thickness, the second thickness greater than the first thickness.

3 . The device of claim 1 , wherein each of the slots and grooves extend in a straight line towards the plate axis.

4 . The device of claim 1 , wherein the tool catch has an angled surface configured to hold different sizes of tools within the slot.

5 . The device of claim 1 , further including a first land formed between the first engagement surface and the first circumferential surface, wherein the width of the land is substantially identical at most portions of the land.

6 . The device of claim 5 , wherein the land is between (SPECIFIC WIDTH FOR CYLINDER APPLICATION?) inches wide.

7 . The device of claim 1 , wherein each engagement surface is configured to contact a majority of the inner surface of its respective O-ring.

8 . The device of claim 1 , further including a slot guide, the slot guide spaced back from an internal surface of the slot such that the O-ring does not contact a majority of the slot guide.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 29, 2025
From: ROCKWELL, ANDREW D.; CHITTENDEN, JONATHAN R.
To: CATERPILLAR INC.
Reel/Frame 070969/0082 →
References Cited (8)
US 6421897B1 · Amaral · 2002 [cited by examiner]
US 11440170B2 · Li · 2022 [cited by applicant]
US 11633819B1 · Chittenden · 2023 [cited by examiner]
US 20220324071A1 · Lu · 2022 [cited by applicant]
CN 105537923A · 2016 [cited by applicant]
CN 112706121A · 2021 [cited by applicant]
DE 102005007087A · 2006 [cited by applicant]
FR 253750A · 1987 [cited by examiner]