Hinge assembly
AssigneeComponent Hardware Group, Inc.
InventorsRichard Bohacik, Bernard Parisi
Life of this patent
Estimating the term…
Abstract
The self-closing hinge assembly has a pair of cam members which are biased against each other by a pair of coil springs. The outer coil spring serves to bias the cam members together under a first restoring force and is effective during an initial opening of a door, for example to a 90.degree. position. The second inner spring becomes compressed only after the outer coil spring has been compressed. Compression of the second coil spring occurs as a door is opened beyond the 90.degree. position. The door may be held in one of two dwell positions corresponding to the cam surfaces on the movable cam member.
Claims24
A hinge assembly comprising
- an elongated housing;
- a first cam member disposed in said housing for rotation relative to said housing, said member having a pin extending from one end out of said housing and having a cam surface at an opposite end;
- a second cam member disposed in said housing in fixed relation thereto for rotation therewith relative to said first cam member, said second cam member having a cam surface facing said cam surface of said first cam member;
- a first spring means in said housing located between one end of said housing and said second cam member and biasing said second cam member against said first cam member to mutually engage said cam surfaces with each other;
- abutment means in said housing at said one end abutting said first spring means;
- and
- a second spring means in said housing coaxially within said first spring means, said second spring means being disposed against said abutment means at one end and being spaced from said second cam member at an opposite end to effect biasing of said second cam member against said first cam member after a predetermined compression of said first spring means.
A hinge assembly comprising
- an elongated housing;
- a first cam member disposed in said housing for rotation relative to said housing, said member having a pin extending from one end out of said housing and having a cam surface at an opposite end with a lobe defining an edge;
- a second cam member disposed in said housing in fixed relation thereto for rotation therewith relative to said first cam member, said second cam member having a cam surface facing said cam surface of said first cam member, said cam surface of said second cam member having an annular shape with a first point to receive said edge in a closed position of said cam members relative to each other, a first inclined portion extending from said first point, a first flat portion corresponding to a first dwell position of said cam members relative to each other, a second inclined portion extending from said first flat portion and a second flat portion extending from said second inclined portion and corresponding to a second dwell position of said cam surfaces relative to each other;
- and
- spring means in said housing located between one end of said housing and said second cam member and biasing said second cam member against said first cam member to mutually engage said cam surfaces with each other;
- abutment means in said housing at said one end of said housing abutting said spring means.
Dependencies are inferred from the claim text.