Self-closing door hinges

Claim 2

A hinge comprising one part formed with an upwardly facing cam surface and a second part having a portion formed with a through opening, and a third part comprising a follower rotatably and slidably mounted on said one part and having a downwardly facing cam surface complementary to the cam surface of said first part and a rod fixed to said follower and projecting thereabove and slidably and non-rotatably engageable in said through opening from either end of said opening, said third part having means to move said second part axially upwardly upon rotating said second and third parts together from a predetermined angular position of said second and third parts relative to said first part.

Claim 3

The combination of claim 1, said hinge constituting a door hinge, said one part having means for attachment to a door jamb, said another part having means for attachment to a door.

Claim 4

The combination of claim 1, said cam surfaces being symmetrical about a plane passing through the axis of said follower.

Claim 5

The combination of claim 1, said one part constituting a hinge flange, said second part constituting a hinge strap.

Claim 6

The combination of claim 1, said one part comprising a socket part and cam member fixed therein and formed with said bore, said cam member and said follower being made of rigid plastic material.

Claim 7

The combination of claim 1, said one part comprising a flange having a back wall formed with a back surface to contact a surface of a door jamb, means to attach said flange to said door jamb, said second part comprising a strap provided with a strap arm having a surface to contact a door, means to attach said said strap arm to said door, said surface of said arm being inclined to said back surface of said flange and toward said back surface in a direction away from the axis of said bore and follower, when said cam surfaces are fully in contact and said door is in closed position.

Claim 8

The combination of claim 6, said cam surfaces being symmetrical about a plane passing through the axis of said one part and follower and perpendicular to said back surface of said back wall.

Claim 9

The combination of claim 1, and cap means to close the end of said through opening opposite the end thereof into which said rod is inserted, and said second part having means on opposite ends of said through opening to receive said cap.

Claim 10

The combination of claim 1, said one part having a back wall, and means extending from the lower end of said back wall and formed with a bore to receive said follower said portion of said second part being located above said extending means of said one part.

Claim 11

The combination of claim 1, said second part having a wall formed with transverse slots and with serrations parallel to the axis of said follower, a plate having serrations on one side complementary to the serrations of said wall, said plate being formed with screw holes registering with said slots for screws to be screwed into a door, whereby a mount said second part on said door in various adjusted positions relative to said door.

Claim 12

The combination of claim 10, said second part having a chamber disposed between the ends of said through opening, and means to removably close said chamber.

Claim 13

The combination of claim 1, said rod being provided with O-ring means engaging the inner surface of said through opening.

Claim 14

The combination of claim 1, said parts comprising parts of an edgemount hinge.

Claim 15

The combination of claim 1, said second part comprising a surface mount offset door strap.

Claim 16

The combination of claim 1, said second part comprising a surface mount flush door strap.

Claim 17

The combination of claim 1, said through opening and rod being polygonal in cross-section.

Claim 18

The combination of claim 1, said cam surfaces having dwells in the fully open and fully closed positions of said hinge.

Claim 19

The combination of claim 1, said one part, follower and rod being coaxial.

Claim 20

A door hinge comprising a flange part having a back wall and a forward extension formed with an upwardly opening socket, a cam member fixed in said socket, said cam member having an upwardly opening socket formed with a cam surface at the lower end of its socket, a follower rotatably and slidably mounted in said socket of said cam member, and formed with a cam surface at its lower end complementary to the first mentioned cam surface, a non-circular rod fixed to said follower and projecting above said follower, and a strap part having a non-circular through hole, said rod being slidably and non rotatably receivable in said through hole from either end thereof, said follower and rod being movable together axially, upon rotation of said strap part from a predetermined angular position and means to move said strap part as said follower are rod more axially.

Claim 21

A door hinge comprising a flange part having a back wall and a forward extension formed with an upwardly opening socket, a cam member fixed in said socket, said cam member having an upwardly opening socket formed with a cam surface at the lower end of its socket, a follower rotatably and slidably mounted in said socket of said cam member, and formed with a cam surface at its lower end complementary to the first mentioned cam surface, a non-circular rod fixed to said follower and projecting above said follower, and a strap part having a non-circular through hole, said rod being slidably and non rotatably receivable in said through hole from either end thereof, said follower and rod being movable together axially, upon rotation of said strap part from a predetermined angular position and means to move said strap part as said follower are rod more axially.

Claim 22

The combination of claim 19, said surface of the other of said elements being inclined to said surface of said one element when said cams are in full contact.

Claim 23

A door hinge comprising a flange part having a back wall and a forward extension formed with an upwardly opening socket a cam member fixed in said socket, said cam member having an upwardly opening socket formed with a cam surface at the lower end of its socket, a follower rotatably and slidably mounted in said socket of said cam member, and formed with a cam surface at its lower end complementary to the first mentioned cam surface, said follower having a non-circular rod fixed to said follower and projecting above said follower, and a strap part having a non-circular through hole, said rod being slidably and non rotatably receivable in said through hole from either end thereof.

Claim 24

A door hinge comprising a flange part having a back wall and a forward extension formed with an upwardly opening socket a cam member fixed in said socket, said cam member having an upwardly opening socket formed with a cam surface at the lower end of its socket, a follower rotatably and slidably mounted in said socket of said cam member, and formed with a cam surface at its lower end complementary to the first mentioned cam surface, said follower having a non-circular rod fixed to said follower and projecting above said follower, and a strap part having a non-circular through hole, said rod being slidably and non rotatably receivable in said through hole from either end thereof.

Claim 25

A hinge comprising a pair of hinge parts, means to attach one part to a surface of a door jamb, means to attach the other part to a surface of a door, one part having a socket formed with end cam means coaxial with said socket, a follower rotatably and slidably received in said socket coaxially thereof, and having end cam means complementary to the cam meaNs of said socket, an axial non-circular rod extending up from said follower, said other part having means at both ends to slidably and non-rotatably receive said rod, said cam means of said socket and follower, being symmetrical about a plane passing through the axis of said socket and follower and perpendicular to one of said surfaces, whereby said other part can be slid off the rod, in a first position of said other part and reversed 180* in its own plane and then slidably remounted on said rod in a second position thereof, and said other part will rise on one part of the socket cam means when said other part is turned 180* in one direction from said first position and will rise on another part of said socket cam means when turned 180* in an opposite direction from said second position; whereby said other part may be used with a left hand door or with a right hand door.

Claim 26

A hinge comprising a pair of hinge parts, means to attach one part to a surface of a door jamb, means to attach the other part to a surface of a door, one part having a socket formed with end cam means coaxial with said socket, a follower rotatably and slidably received in said socket coaxially thereof, and having end cam means complementary to the cam meaNs of said socket, an axial non-circular rod extending up from said follower, said other part having means at both ends to slidably and non-rotatably receive said rod, said cam means of said socket and follower, being symmetrical about a plane passing through the axis of said socket and follower and perpendicular to one of said surfaces, whereby said other part can be slid off the rod, in a first position of said other part and reversed 180* in its own plane and then slidably remounted on said rod in a second position thereof, and said other part will rise on one part of the socket cam means when said other part is turned 180* in one direction from said first position and will rise on another part of said socket cam means when turned 180* in an opposite direction from said second position; whereby said other part may be used with a left hand door or with a right hand door.

Claim 27

The combination of claim 22, said cam means of said socket and cam means of said follower, having full contact in the dropped position of said other part, and dwell means to hold said other part on raised position when said other part is turned 180* from either the first or second positions, and said other part will drop by gravity to self-close the door to which it is attached when said other part is moved past said dwell, in directions back toward either first or second position.