IP Library Patent Application 18672964
Patent Application
App. No. 18/672,964

Debris and Fluid Entry Prevention Systems for Jack Cylinders

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 None
App. No.
18/672,964
Abstract

An ingress prevention system for use with pneumatic or hydraulic jack cylinders prevents debris and/or fluids from gaining access to portions of the pneumatic or hydraulic jack cylinders. The ingress prevention system includes a boot operable to retain and/or seal at least a portion of one or more jack cylinders within a boot cavity. The ingress prevention system reduces a jack cylinder's exposure to debris and/or fluids to maintain performance and prolong the operating life of the jack cylinder. The ingress prevention system further comprises at least one barrel seal operable to wipe debris and/or fluids from the surfaces of a piston rod as the piston rod reciprocates within a barrel.

Claims (67)

1 . An ingress prevention system for use with pneumatic or hydraulic jacks, comprising:

a jack cylinder including a piston rod, a barrel, and a piston rod cap, wherein the barrel is operable to receive at least a portion of the piston rod, wherein the jack cylinder further comprises a rod end proximate an exposed end of the piston rod and a barrel end proximate a jack base;

a boot comprising:

a boot cavity operable to receive at least a portion of the jack cylinder;

a top end including an annular rim defining an annular rim opening; and

a bottom end including a barrel opening and an annular lip defining a planar surface; and

a flange disposed around at least a portion of the boot near the bottom end and positioned adjacent the annular lip of the boot, wherein:

the boot is flexible;

the annular rim is operable to retain at least a portion of the rod end of the jack cylinder within the boot cavity; and

the flange is operable to maintain contact between portions of the annular lip and the jack base.

2 . The ingress prevention system of claim 1 , further comprising:

a spring at least partially surrounding the barrel and the piston rod;

a head of the piston rod secured to the piston rod cap, wherein the piston rod cap is covering at least a portion of the spring, barrel, and piston rod; and

a rod opening of the piston rod cap being concentric with the annular rim opening.

3 . The ingress prevention system of claim 2 , wherein the annular rim opening is sized smaller than the piston rod cap to retain the rod end of the jack cylinder within the boot cavity.

4 . The ingress prevention system of claim 3 , wherein a bottom surface of the flange mates with the planar surface of the annular lip to maintain contact between the annular lip and the jack base.

5 . The ingress prevention system of claim 1 , further comprising:

a groove disposed on an inner surface of the barrel; and

a barrel seal disposed within the groove, the barrel seal operable to wipe debris and/or fluids from the piston rod as the piston rod reciprocates within the barrel.

6 . The ingress prevention system of claim 1 , further comprising a barrel seal secured to an end of the barrel, the barrel seal operable to wipe debris and/or fluids from the piston rod as the piston rod reciprocates within the barrel.

7 . An ingress prevention system for use with jack cylinders, comprising:

a jack cylinder including a piston rod and a barrel, wherein the barrel is operable to receive at least a portion of the piston rod and securely fastened to a jack base with a threaded engagement;

a spring at least partially surrounding the barrel and the piston rod;

a boot comprising:

a boot cavity operable to receive at least a portion of the barrel, the piston rod, and the spring;

a top end including an annular rim defining an annular rim opening; and

a bottom end including a barrel opening and an annular lip, wherein:

the boot is flexible; and

a flange threadedly engaged with at least a portion of the barrel near the jack base.

8 . The ingress prevention system of claim 7 , wherein the annular rim is adjacent to a retaining ring and at least one boot seal, wherein the retaining ring and the at least one boot seal are operable to seal the top end of the boot.

9 . The ingress prevention system of claim 7 , wherein the flange includes a lip cavity disposed on an inner surface of the flange, the lip cavity operable to receive at least a portion of the annular lip.

10 . The ingress prevention system of claim 7 , wherein the barrel includes a port operable to regulate air pressure within the boot cavity.

11 . The ingress prevention system of claim 10 , further comprising a filter disposed within a hollow bore of the port.

12 . The ingress prevention system of claim 7 , further comprising:

a groove disposed on an inner surface of the barrel; and

a barrel seal disposed within the groove, the barrel seal operable to wipe debris and/or fluids from the piston rod as the piston rod reciprocates within the barrel.

13 . The ingress prevention system of claim 7 , further comprising a barrel seal secured to an end of the barrel, the barrel seal operable to wipe debris and/or fluids from the piston rod as the piston rod reciprocates within the barrel.

14 . An ingress prevention system for use with jack cylinders, comprising:

a plurality of jack cylinders, each including a piston rod and a barrel, wherein the barrel is operable to receive at least a portion of the piston rod, wherein each of the plurality of jack cylinders further comprises a rod end proximate an exposed end of the piston rod and a barrel end proximate a jack base;

a boot comprising:

a boot cavity operable to receive at least a portion of each of the plurality of jack cylinders;

a top end including an annular rim defining a piston rod opening and a plate cavity disposed within the annular rim;

a plate disposed at least partially within the plate cavity of the annular rim; and

a bottom end including a barrel opening and an annular lip defining a planar surface, wherein:

the boot is flexible; and

a flange disposed around at least a portion of the boot and positioned adjacent the annular lip of the boot, the flange secured to the jack base with a plurality of fasteners.

15 . The ingress prevention system of claim 14 , further comprising:

a plurality of springs each at least partially surrounding the barrels and the piston rods; and

a plurality of piston rod caps, the plurality of piston rod caps secured to a head of each of the piston rods and covering at least a portion of the springs, the barrels, and the piston rods.

16 . The ingress prevention system of claim 14 , wherein the plate includes a plurality of openings operable to receive each of the exposed ends of the plurality of jack cylinders.

17 . The ingress prevention system of claim 14 , further comprising:

a groove disposed on an inner surface of each of the barrels; and

a barrel seal disposed within the groove, the barrel seal operable to wipe debris and/or fluids from the piston rods as the piston rods reciprocate within the barrels.

18 . The ingress prevention system of claim 14 , further comprising a barrel seal secured to an end of each of the barrels, the barrel seal operable to wipe debris and/or fluids from the piston rods as the piston rods reciprocate within the barrels.

19 . An ingress prevention system for use with jack cylinders, comprising:

a jack cylinder including a piston rod and a barrel, wherein the barrel is operable to receive at least a portion of the piston rod;

a spring at least partially surrounding the barrel and the piston rod;

a piston rod cap secured to a head of the piston rod and covering at least a portion of the spring, the barrel, and the piston rod;

a boot disposed between the spring and the piston rod, the boot comprising:

a boot cavity operable to receive at least a portion of the barrel and the piston rod,

a top end including a piston rod opening, the top end operable to retain at least a portion of the piston rod within the boot cavity, and

a bottom end including a barrel opening operable to at least partially receive the barrel, the bottom end operable to retain at least a portion of the barrel within the boot cavity.

20 . The ingress prevention system of claim 19 , wherein the boot includes a flexible portion near the top end and a stiff portion near the bottom end having a clamp to secure the bottom end of the boot to the barrel.

21 . The ingress prevention system of claim 19 , wherein the piston rod cap comprises a shield, a retaining ring, and a retaining clip, wherein the retaining clip is operable to secure the retaining ring to the piston rod.

22 . The ingress prevention system of claim 19 , further comprising:

a groove disposed on an inner surface of the barrel; and

a barrel seal disposed within the groove, the barrel seal operable to wipe debris and/or fluids from the piston rod as the piston rod reciprocates within the barrel.

Assignments (3)
AFTER-ACQUIRED PATENT SECURITY AGREEMENT Recorded Jul 22, 2024
From: HARBOR FREIGHT TOOLS USA, INC.
To: UBS AG, STAMFORD BRANCH AS COLLATERAL AGENT
Reel/Frame 068477/0736 →
SECURITY INTEREST Recorded Jun 25, 2024
From: HARBOR FREIGHT TOOLS USA, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 067839/0179 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2024
From: MCGRAW, ANDREW
To: HARBOR FREIGHT TOOLS USA, INC.
Reel/Frame 067602/0057 →