US 8,013,246 B2Granted

Push-in emergency stop cover with plug-in unit

AssigneeZhejiang Kedu Electric Meg. Co. Ltd

InventorChun Kai Zheng

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Abstract

A push-in emergency stop cover with a plug-in unit includes a retainer, a stop button, a lock cover, a lock base, a combination of a lock and lock spring assembled in the lock cover, a plug-in unit, a slide block, a push button and an associated spring, a slide block and associated spring, a groove provided in said lock cover, said plug-in unit having a key extending through an opening provided in said stop button and to one side of said slide block, the push button having a push rod provided with an inclined plane and a raised block having an inclined plane at the rear of the lock. When the plug-in unit is inserted in the stop button to separate the lock from a lockstitch of the lock base, the lock cover will open; the lock cover will not open when the plug-in unit is removed after the cover is locked. The stop button has a retainer to cover an opening in the stop button to prevent foreign obstacles from falling into the opening.

Claims12

Dependent claims

A push-in emergency stop cover comprising

a plug-in unit,
a retainer cover,
an emergency stop button,
a lock cover with an opening provided in said lock cover,
a lock base,
a lock piece,
a lockstitch provided in said lock base for receiving an end of said lock piece,
a combination of said lock piece and a lock spring assembled together in the lock cover,
a slide block having a first return spring,
a push button and a push rod having an inclined plane and each said push button and push rod having a second return spring,
said slide block and said first return spring being located in said opening in the lock cover,
said plug-in unit having a key,
a raised block provided with an inclined plane located at a rear of said lock piece such that when said key of the plug-in unit is inserted against said slide block, said slide block is moved to receive said push rod, and the inclined plane of said push rod is moved against the raised block at the rear of said lock piece to move said lock piece in a rearward direction.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/274,317Filed 19 Nov 2008 · us provisional application
Priority: 20 Nov 2007
Published: US 2009/0126430 A121 May 2009
Granted: 6 Sep 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

E05B 13/001
Devices preventing the key or the handle or both from being used: covers preventing access to handles or keys
E05B 65/10
Locks or fastenings for special use: for panic or emergency doors
Y10T 70/8649
For key-operated mechanism: keyhole covers
E05B
Locks