Tubular door lock with a bell

Details Tubular door lock with a bell Tubular door lock with a bell

1987-07-15

1989-08-01

Moore, Richard E.

Closure fasteners

Operators with knobs or handles

70467, E05C 116

Patent

active

048529222

ABSTRACT:
A sort of tubular door lock whose inside knob or outside knob can be forced to rotate by each other's rotation and force a rotating unit to turn pushing and overpassing a projection of a knocking spring to get the knocking points at its both ends to knock on a bell for ringing. In addition, when said inside knob is locked up, the outside knob has no supporting force for making the latch rotated but can give an idle turning only.

REFERENCES:
patent: 219314 (1879-09-01), Silva
patent: 356606 (1887-01-01), Thomas et al.
patent: 535288 (1895-03-01), Holman
patent: 691064 (1902-01-01), Lippincott
patent: 716471 (1902-12-01), Pickop et al.
patent: 818362 (1906-04-01), Edy
patent: 1030841 (1912-06-01), Colounese et al.
patent: 3039423 (1962-06-01), Warn
patent: 3240040 (1966-03-01), Wilson
patent: 3800573 (1974-04-01), Bobb, Jr. et al.
patent: 4577584 (1986-03-01), Shih

Affiliated with

Also associated with

Rating

Tubular door lock with a bell does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tubular door lock with a bell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tubular door lock with a bell will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-127096