Title:
Self-closing door hinge
United States Patent 3380109


Inventors:
Ruiz, William B.
Application Number:
US53527766A
Publication Date:
04/30/1968
Filing Date:
02/02/1966
Assignee:
WILLIAM B. RUIZ
Primary Class:
International Classes:
E05F3/16; E05F3/20
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US Patent References:
2328851Door closer1943-09-07
2203197Spring door hinge and check1940-06-04
2018564Hinge with hydraulic brake1935-10-22
1837716Doorcheck1931-12-22
1612237Spring hinge1926-12-28
1442892Door check and closer1923-01-23