Jeffery M. Simpson
General Contractor at Briarcliff Dr, Monroe, NC
License number
North Carolina 46965
Renew Date
Feb 25, 2016
Category
General Contractor
Type
Building
Address
Address
4330 Briarcliff Dr, Monroe, NC 28110
Phone
(704) 351-0535
Professional information
Door Closer And Holder
US Patent:
4793023, Dec 27, 1988
Filed:
Jun 15, 1987
Appl. No.:
7/061785
Inventors:
Jeffery M. Simpson - Monroe NC
Clay E. Tully - Charlotte NC
Clay E. Tully - Charlotte NC
Assignee:
Yale Security Inc. - Monroe NC
International Classification:
E05F 322
US Classification:
16 58
Abstract:
A door closer and holder comprises a cylinder shell having a piston sealingly reciprocable therein. A spring biases the piston toward one end of the shell, and the piston is connected through the ususal apparatus to the door. At the one end the operating rod of a shuttle valve extends into the shell and is engaged by the piston as it approaches the end. The shuttle valve selectively directs the return fluid flow through sweep- and latch-control valves. The assembly also includes a solenoid-operated "bullet" which closes off the return flow to hold the door open. The angle of the openness at which the door is held may be selected by setting a cam on the holder drive pinion which engages a switch to activate the solenoid.