LOCK FOR SALOON-TYPE LAVATORY DOOR
A lock assembly that includes a blocking member and a linkage assembly having a triangle member assembly and a bar member. The first corner of the triangle member assembly is pivotably attached to a first end of the bar member and a second end of the bar member is pivotably attached to the blocking member. The first leg of the triangle member assembly extends between the first and second corners, the second leg extends between the second and third corners and the third leg extends between the first and third corners. The lock assembly also includes a handle associated with the third corner of the triangle member assembly. Movement of the handle along a curved path from a start position to a finish position moves the blocking member between a first position and a second position. A first distance is defined between the handle and the blocking member when the blocking member is in the first position and a greater second distance is defined when the blocking member is in the second position.
1 . A lock assembly comprising:
a blocking member,
a first linkage assembly that includes a first triangle member assembly and a first bar member, wherein the first triangle member assembly includes first, second and third corners, wherein the first corner is pivotably attached to a first end of the first bar member, wherein a second end of the first bar member is pivotably attached to the blocking member, wherein the first triangle member assembly includes first, second and third legs, wherein the first leg extends between the first and second corners, wherein the second leg extends between the second and third corners, and wherein the third leg extends between the first and third corners, and
a first handle associated with the third corner of the first triangle member assembly,
wherein movement of the handle along a curved path from a start position to a finish position moves the blocking member between a first position and a second position, wherein a first distance is defined between the handle and the blocking member when the blocking member is in the first position and a second distance is defined between the handle and the blocking member when the blocking member is in the second position, wherein the second distance is greater than the first distance.
2 . The lock assembly of claim 1 further comprising:
a vertical bar, wherein the first handle extends outwardly from the vertical bar, wherein the third corner of the first linkage assembly is pivotably attached to the vertical bar,
a second linkage assembly that includes a second triangle member assembly and a second bar member, wherein the second triangle member assembly includes first, second and third corners, wherein the first corner is pivotably attached to a first end of the second bar member, wherein the third corner is pivotably attached to the vertical bar, wherein a second end of the second bar member is pivotably attached to the blocking member, wherein the second triangle member assembly includes first, second and third legs, wherein the first leg extends between the first and second corners, wherein the second leg extends between the second and third corners, and wherein the third leg extends between the first and third corners.
3 . The lock assembly of claim 1 further comprising a receiver member that includes a pocket defined therein, wherein in the first position the blocking member is not received in the pocket and in the second position the blocking member is received in the pocket.
4 . The lock assembly of claim 1 wherein the third leg of the first triangle member assembly is longer than the first and second legs.
5 . The lock assembly of claim 4 wherein the first and second legs of the first triangle member assembly are the same length.
6 . The lock assembly of claim 1 further comprising a detent assembly that includes a cap that is biased against the first triangle member assembly, wherein when the handle is in the start position the cap presses against the second leg of the first triangle member assembly, and wherein when the handle is in the finish position the cap presses against the first leg of the first triangle member assembly.
7 . The lock assembly of claim 6 wherein the triangle member assembly includes a detent surface, and wherein the cap slides along the detent surface with the handle is moved from the start position to the finish position.
8 . The lock assembly of claim 3 wherein a leading portion of the blocking member defines an elliptical cross-section.
9 . The lock assembly of claim 7 wherein the pocket defines an elliptical cross-section for receiving the blocking member.
10 . A lock assembly comprising:
a vertical bar having at least a first handle extending outwardly therefrom,
a blocking member,
a first linkage assembly that includes a first triangle member assembly and a first bar member, wherein the first triangle member assembly includes first, second and third corners, wherein the first corner is pivotably attached to a first end of the first bar member, wherein the third corner is pivotably attached to the vertical bar, wherein a second end of the first bar member is pivotably attached to the blade, wherein the first triangle member assembly includes first, second and third legs, wherein the first leg extends between the first and second corners, wherein the second leg extends between the second and third corners, and wherein the third leg extends between the first and third corners,
a second linkage assembly that includes a second triangle member assembly and a second bar member, wherein the second triangle member assembly includes first, second and third corners, wherein the first corner is pivotably attached to a first end of the second bar member, wherein the third corner is pivotably attached to the vertical bar, wherein a second end of the second bar member is pivotably attached to the blade, wherein the second triangle member assembly includes first, second and third legs, wherein the first leg extends between the first and second corners, wherein the second leg extends between the second and third corners, and wherein the third leg extends between the first and third corners,
a receiver member that includes a pocket defined therein, wherein movement of the handle along a curved path from a start position to a finish position moves the blocking member between a first position and a second position, wherein a first distance is defined between the vertical bar and the blocking member when the blocking member is in the first position and a second distance is defined between the vertical bar and the blocking member when the blocking member is in the second position, wherein the second distance is greater than the first distance, and wherein in the first position the blocking member is not received in the pocket and in the second position the blocking member is received in the pocket, and
a detent assembly that includes a cap that is biased against the first triangle member assembly, wherein when the handle is in the start position the cap presses against the second leg of the first triangle member assembly, and wherein when the handle is in the finish position the cap presses against the first leg of the first triangle member assembly.
11 . The lock assembly of claim 10 wherein the triangle member assembly includes a detent surface, and wherein the cap slides along the detent surface with the handle is moved from the start position to the finish position.
12 . The lock assembly of claim 11 wherein a leading portion of the blocking member defines an elliptical cross-section.
13 . The lock assembly of claim 12 wherein the pocket defines an elliptical cross-section for receiving the blocking member.
14 . The lock assembly of claim 13 wherein the third leg of the first triangle member assembly is longer than the first and second legs, and wherein the third leg of the second triangle member assembly is longer than the first and second legs.
15 . The lock assembly of claim 14 wherein the first and second legs are the same length.