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Browse Prior Art Database

Safety Cart Stop

IP.com Disclosure Number: IPCOM000103991D
Original Publication Date: 1993-Feb-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 1 page(s) / 31K

Publishing Venue

IBM

Related People

Parnia, M: AUTHOR

Abstract

Clean room areas in electronic factories often have raised floors for accomodating facilities such as air conditioning return systems. Typically the clean room floor is raised to a level 12" above the floor of the building. During manufacturing, products and components must be transported between one place and another by carts. For moving carts between the raised floor and the building floor, mechanical or hydraulic lift systems may be used. While a cart is being raised or lowered by the lift, there is nothing to prevent the cart from moving and resulting in accidental injury and damage to humans and the product. The purpose of the safety cart stop is to prevent movement of a cart while it is on the lift and the lift is being raised or lowered, thus, eliminating these accidents.

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Safety Cart Stop

      Clean room areas in electronic factories often have raised
floors for accomodating facilities such as air conditioning return
systems.  Typically the clean room floor is raised to a level 12"
above the floor of the building.  During manufacturing, products and
components must be transported between one place and another by
carts.  For moving carts between the raised floor and the building
floor, mechanical or hydraulic lift systems may be used.  While a
cart is being raised or lowered by the lift, there is nothing to
prevent the cart from moving and resulting in accidental injury and
damage to humans and the product.
     The purpose of the safety cart stop is to prevent movement of a
cart while it is on the lift and the lift is being raised or lowered,
thus, eliminating these accidents.  The safety cart stop device is a
pivotal, gravitational system and is attached to a frame of the lift.
The device is positioned so that a stop blade is moved into a slot in
the platform of the lift on which the cart is positioned when the
lift is being raised or lowered.  It is so positioned on the lift
frame that the motion of raising the lift results in the pivotal,
gravitational system causing the blade to move into the slot.  The
blade blocks the wheels of the cart, preventing the cart from moving.

When the lift is being lowered, the blade is withdrawn below the
platform, and the cart can then be readily moved off the lift.

Disclosed Anonymously.