Title: Exit lock having cassette mechanism

Abstract: An emergency exit lock of vertical rod type has an active case which contains a latch bolt retracting mechanism operable at all times by a panic-bar. A key-controlled cassette mechanism releasably retained in the active case cooperates with the latch bolt retracting mechanism to provide an additional lock operating function. The cassette mechanism may be assembled to provide a latch holdback function, to lock or disable and unlock or enable a manually operated outside operating member, or to unlock or enable an outside operating member normally maintained in locked or disabled condition when the key is removed.

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Inventors: Balducci, Walter O. (New Britain, CT, US)

Application Number: 561669
Filing Date: 1975-03-24
Publication_date: 1976-09-21
Assignee: Emhart Industries, Inc. (Farmington, CT)
Primary Class(es): 70/92 70/214, 70/436
Other Classes:
US Patent Ref:

649087	May, 1900	Wade et al.	70/214.
1394475	Oct, 1921	Crosby	70/436.
2854838	Oct, 1958	Foster	70/92.
2962889	Dec, 1960	McConnell	70/92.
3324692	Jun, 1967	Welch	70/92.

Other Refs:
Primary Examiner: Gilliam, Paul R.
Assistant Examiner: Pietruszka, C. F.
Attorney: McCormick, Paulding & Huber