Pivot locking means

Claim 2

A pivot lock for pivotally interconnecting a pair of opposing members, said pivot lock comprising a tongue part adapted to be connected to one of said opposing members and a tongue receiving bifurcated part adapted to be connected to the other of said opposing members, said bifurcated part having a pin extending therethrough and said tongue part having an openended slot therein engageable with said pin, said tongue part also having an elongated slot therein lying at right angles to said open-ended slot and in communication with said open-ended slot, a latch member pivotally mounted in said eLongated slot, said latch member having a hooked end engageable about said pin when seated in said open-ended slot, and spring means normally biasing the hooked end of said latch member into engagement with said pin.

Claim 3

The pivot lock claimed in claim 1 wherein said latch member mounts a release button at its end opposite said hooked end, said release button being received in a bore in said tongue part in communication with said elongated slot, said release button being depressable in said bore to pivot said latch member in a direction to release said hooked end from engagement with said pin.

Claim 4

The pivot lock claimed in claim 1 wherein the hooked end of said latch member includes an inclined outer surface contactable by said pin when said tongue part is inserted in said bifurcated part, said pin acting on said inclined surface to pivot said latch member to an open position in which said pin may pass the hook end of said latch member, whereupon said latch member will be returned to a hook engaging position by said spring means.

Claim 5

The pivot lock claimed in claim 1 wherein said tongue part has an angularly related extension, wherein said bifurcated part has an angularly related bifurcated extension adapted to receive the extension of said tongue, and wherein a pivot pin interconnects said extensions.

Claim 6

A hinge lock for hingedly connecting a pair of members for pivotal movement relative to each other and for releasably locking the members in a fixed position of use, said hinge lock comprising a tongue part and a bifurcated tongue receiving part, said parts each having an angularly related extension, a pivot pin interconnecting said extensions, said tongue part having an open-ended slot therein engageable about a locking pin extending through said bifurcated part and lying in spaced relation to said pivot pin, said tongue part including a latch member engageable with said locking pin to maintain said locking pin in said open-ended slot.

Claim 7

A hinge lock for hingedly connecting a pair of members for pivotal movement relative to each other and for releasably locking the members in a fixed position of use, said hinge lock comprising a tongue part and a bifurcated tongue receiving part, said parts each having an angularly related extension, a pivot pin interconnecting said extensions, said tongue part having an open-ended slot therein engageable about a locking pin extending through said bifurcated part and lying in spaced relation to said pivot pin, said tongue part including a latch member engageable with said locking pin to maintain said locking pin in said open-ended slot.

Claim 8

The locking hinge claimed in claim 5 wherein said tongue part has an elongated slot therein lying at right angles to said open-ended slot and in communication with said open-ended slot, said latch member being received in said elongated slot and pivotally mounted for movement relative to said tongue part, said latch member having a hooked end engageable about said locking pin, spring means normally biasing the hooked end of said locking member into engagement with said locking pin, said latch member mounting a release button at its end opposite said hooked end, said release button being received in a bore in said tongue part in communication with said elongated slot, said release button being depressable in said bore to pivot said latch member in a direction to release said hooked end from engagement with said locking pin.

Claim 9

The locking hinge claimed in claim 6 wherein the hooked end of said latch member includes an inclined outer surface positioned to contact said locking pin when said locking pin is inserted in said open-ended slot, said pin acting on said inclined surface to pivot said latch member to an open position in which said locking pin may pass the hooked end of said latch member, whereupon said latch member will be returned to a locking pin engaging position by said spring means.