Other

Frank J Sabo

William Arthur Keely

Ilona A Ross

Doonan D McGaw

A fitting having members threaded together to a desired position is provided with an arrangement for locking the members against relative rotation so as to maintain the members within a predetermined angular range of rotation relative to each other which encompasses the desired position. The locking arrangement includes longitudinally extending recesses in the outer surfaces of the fitting members which are axially aligned, and an insert which is fitted in a set of axially aligned recesses to lock the members against relative rotation. The recesses are keyhole shaped. The insert is also keyhole shaped in cross section, or is cylindrical. The insert may be made of suitable plastic such as nylon, or may be metallic. When the insert is of a material that is resiliently deformable, it may be laid over and then pressed into the recesses. A metallic or other less deformable insert, such as a rod or wire segment of safety wire, piano wire, etc., may be inserted longitudinally through the set of axially aligned recesses. The insert fills at least the cylindrical portion of the keyhole shaped recesses. When the insert is also keyhole shaped, it may have either parallel or convergent sides along the flat surface portion thereof. Likewise, the keyhole cross section of the recesses may be similarly shaped along the flat portions thereof. The insert is locked in the recesses due to the keyhole shape or the press fitting action of the insert, but may be removed for field service of the fitting. The fitting may also have sealing means, with or without the locking means, protecting the fitting threads against physical damage and contamination.

Connector fitting locking and sealing arrangements

A security system has a wall mounted assembly for installation adjacent an entry door and includes a motion detector for sensing intruders, an alarm for sounding a warning, an alarm circuit, a radio receiver responsive to two codes, and an electric door striker. A portable miniature transmitter has two transmission codes to activate the receiver, one for toggling the alarm circuit between armed and disarmed condition and for releasing the door upon disarming the alarm circuit. When the circuit is armed the motion detector is able to activate the alarm. The second transmission code activates the alarm if the circuit is armed. Remote self contained motion detector and transmitter units for use in other rooms use the second code to activate the alarm when motion is detected by those units.

Growing community of inventors

South Bend, IN, United States of America

Frank J Sabo