Title: Security device for window locks

Abstract: A security device is provided for installation on double hung windows to prevent the window lock from being jimmied open from the outside and to tighten the windows sashes to the frame as well as to each other when locked. The device is in the form of a generally flat plate or shield that is installed under the window latch and is formed with a pair of fingers which extend across the gap between the upper and lower sashes on either side of the keeper. Reentrant openings are formed from the edge of the shield to allow easy installation and a central portion of reduced thickness introduces a slight tilt to the latch to provide an improved locking grip with the keeper.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Costello, Michael (East Boston, MA, US)
Costello, John E. (Saugus, MA, US)

Application Number: 000823
Filing Date: 1979-01-04
Publication_date: 1980-09-23
Assignee: Meridian Safety Products, Inc. (Boston, MA)
Primary Class(es): 292/346 292/241
Other Classes:
US Patent Ref:

1399897	Dec, 1921	Singer	292/346.
2796281	Jun, 1957	Philpott	292/346.
2816788	Dec, 1957	Henry	292/346.
3837191	Sep, 1974	Soiderer	292/346.
3966248	Jun, 1976	James	292/341.
4102546	Jul, 1978	Costello	292/346.

Other Refs: 240706

Oct, 1925	GB

Primary Examiner: Moore, Richard E.
Assistant Examiner:
Attorney: Morse, Altman, Oates & Bello