IP Library Granted Patent US 10,486,002
Granted Patent B1
US 10,486,002 · App. 16/107,501 · Granted Nov 26, 2019

Fall arrest system

Inventor: Derek Cameron Drinkwater (New Plymouth, NZ)
Assignee: Ascend Safe Limited
A62B35/005A62B35/04A01F25/16
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Quick Facts
Patent No.
US 10,486,002
App. No.
16/107,501
Granted
Nov 26, 2019
Kind
B1
Abstract

A fall arrest system for a silo having a ladder is described. Silos typically have a slopping top and substantially vertical sides. Typically, multiple independent fail arrest systems are used, one for the sloping top and one for the vertical sides. The single fall arrest system described includes: a safety cable, having a top end and a bottom end, to which in use a user connects to; a collar for fitting at the top of the silo, around the neck of the silo to which the top end of safety cable is attached; a pulley at the transition of the slopping top and substantially vertical sides, wherein the pulley supports the safety cable at the transition; and securing means for securing the bottom of the safety cable at the base of the silo.

Claims (18)

1. A fall arrest system for a silo having a ladder, a slopping top and substantially vertical sides comprising:

a safety cable, having a top end and a bottom end, to which in use a user connects to;

a collar for fitting at the top of the silo, around the neck of the silo to which the top end of safety cable is attached;

a shock absorber connected between the collar and the top end of safety cable;

a pulley at a transition of the slopping top and substantially vertical sides of the silo, wherein the pulley supports the safety cable at the transition; and

securing means for securing the bottom of the safety cable at a base of the silo.

2. The fall arrest system of claim 1 further including a resilient device between the bottom end of the safety cable and the securing means.

3. The fall arrest system of claim 2 wherein the resilient member is a spring.

4. The fall arrest system of claim 1 further including a securing tie connected substantially opposite the safety cable to the collar, wherein in use the securing tie attaches to the top of the silo.

5. The fall arrest system of claim 1 wherein the safety cable is stainless steel.

6. The fall arrest system of claim 1 wherein the safety cable is steel.

7. The fall arrest system of claim 1 wherein the silo an agricultural silo.

8. The fall arrest system of claim 1 wherein the silo a commercial silo.

9. The fall arrest system of claim 1 wherein the silo an industrial silo.

10. The fall arrest system of claim 1 wherein the silo is a grain silo.

11. The fall arrest system of claim 1 wherein the silo is a feed silo.

12. The fall arrest system of claim 1 wherein the silo is a fertiliser silo.

13. The fall arrest system of claim 1 wherein the silo is a liquid silo.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 22, 2018
From: DRINKWATER, DEREK CAMERON
To: ASCEND SAFE LIMITED
Reel/Frame 046906/0540 →
Cited By (2)
US 12,428,909 US 12,623,100