Door latch apparatus

Details Door latch apparatus Door latch apparatus

1982-06-04

1985-03-05

Smith, Gary L.

Closure fasteners

Knob-attaching devices

70452, 70DIG57, 29216916, 292357, 292359, E05B 300, E05B 1502

Patent

active

045027200

ABSTRACT:
A door latch mechanism for controllably securing a door, the latch mechanism of the type having a spindle and operating handles, comprises a fusible connecting member rigidly attaching the handle and spindle at room temperature, the fusible connecting member melting at elevated temperatures to permit relative rotation of the handle and spindle. The handle is mounted using a connecting member which is attached to the latch trim using a screwless connection. It is particularly applicable to latches using lever handles in that a positive positioning mechanism holds the handles at their selected positions, regardless of wear and age.

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