Forced entry resistant check rail lock

A check rail lock comprising:

• a housing having first and second locking notches associated with an open-locked position and a closed-locked position, respectively;
• a handle including a shaft rotatably received by said housing;
• a cam connected to and rotatable with said shaft between the open-locked and the closed-locked positions;
• means for locking said handle in said open-locked and said closed-locked positions, said locking means having a button end, a lower portion extending through an opening in said handle for independent axial movement and for rotary movement therewith, and a radially extending lug formed at an end of the lower portion, said lug being biased into said first and second locking notches when said handle is in said open-locked and closed-locked position, respectively;
• and
• a spring washer received in the shaft between said housing and said cam for rotation therewith, said washer biasing said locking means into said first and second locking notches when said handle is in said open-locked and closed-locked position, respectively;
• wherein said button end is manually engageable to axially move the locking means against the bias of the spring washer to release the locking means and shaft from either said open-locked or said closed-locked positions;
• and
• wherein said button end projects above said housing when said lug is in either said first notch or said second notch.

A check rail lock comprising:

• a housing including a tubular section having a raised arcuate portion between first and second locking notches associated with an open-locked position and a closed-locked position, respectively;
• a handle including a shaft rotatably received in said tubular section of said housing, said handle including a rectangular section having an axially-extending groove which defines first and second lugs;
• a cam connected to and rotatable with said shaft between the open-locked and the closed-locked positions;
• means for locking said handle in said open-locked and said closed-locked positions, said locking means having a button end projecting outside said handle and a lower portion slidably engaged in the axially-extending groove for independent axial movement and for fixed rotary movement with the shaft;
• and
• a spring washer received on the shaft between said housing and said cam for rotation therewith, said washer biasing said locking means into said first and second locking notches when said handle is in said open-locked and closed-locked position, respectively;
• wherein said button end is manually engageable to axially move the locking means against the bias of the spring to release the locking means and shaft from either said open-locked or said closed-locked positions, said locking means being slidably received on said raised arcuate portion when said handle is rotated between open-locked and said closed-locked positions.

A check rail lock comprising:

• a housing having first and second locking notches associated with an open-locked position and a closed-locked position, respectively;
• a handle including a shaft rotatably received by said housing, said shaft including a rectangular section having an axially-extending groove which defines first and second lugs;
• a cam connected to and rotatable with said shaft between the open-locked and closed-locked positions;
• means for locking said handle in said open-locked and said closed-locked positions, said locking means being slidably received in said axially-extending groove between said lugs and extending through said opening in said handle and having a button end extending through an opening in said handle for independent axial movement and for rotary movement therewith;
• and
• a spring washer received on the shaft between said housing and said cam for rotation therewith, said washer biasing said locking means into said first and second locking notches when said handle is in said open-locked and closed-locked position, respectively;
• wherein said button end is manually engageable to axially move the locking means against the bias of the spring washer to release the locking means and shaft from either said open-locked or said closed-locked positions.

A check rail lock comprising:

• a housing having first and second locking notches formed in a housing tubular section, said first and second notches associated with an open-locked position and a closed-locked position, respectively, said housing further including a raised arcuate portion between said first and second locking notches;
• a handle including a shaft rotatably received in the tubular section of said housing;
• a cam connected to and rotatable with said shaft between the open-locked and the closed-locked positions;
• means for locking said handle in said open-locked and said closed-locked positions, said locking means having a button end and a lower portion extending through an opening in said handle for independent axial movement and for rotary movement therewith and further having a radially extending lug formed at an end thereof, said lug being biased into said first and second locking notches when said handle is in said open-locked and closed-locked position, respectively, said radially extending lug of said locking means being slidably received on said raised arcuate portion to allow said handle to be rotated between said open-locked and said closed-locked positions;
• and
• a spring washer received on the shaft between said housing and said cam for rotation therewith, said washer biasing said locking means into said first and second locking notches when said handle is in said open-locked and closed-locked position, respectively;
• wherein said button end is manually engageable to axially move the locking means against the base of the spring washer to release the locking means and shaft from either said open-locked or said closed-locked positions.