Collapsible revolving door having removable wings

Claim 2

In a collapsible revolving door of the type having a plurality of wings extending radially from a center post and connected thereto by hanger assemblieS disposed at either end portion of the center post, each hanger assembly including a hanger disc secured to the center post and a hanger bar secured to the respective door wing, said hanger bar having pins extending within a grooved portion formed in the hanger disc whereby the door wings are mounted for guided, independent, relative swinging movement relative to the center post for moving the door to the collapsed position; the improvement comprising, means operatively connected to the grooved portion of the disc to restrict the pivotal movement of the door wing between predetermined limits to the collapsed position, said means being detachable from the grooved portion of the disc to permit pivotal movement of the door wing beyond the predetermined limits, whereby the door wings can be disconnected from the center post.

Claim 3

A collapsible revolving door according to claim 1 wherein the means operatively connected to the grooved portion of the disc comprises shoulder bolts threadably mounted on said hanger disc.

Claim 4

A collapsible revolving door according to claim 1 wherein the means operatively connected to the grooved portion of the disc comprises, peripheral portions on the hanger disc detachably mounted thereon.

Claim 5

A collapsible revolving door according to claim 1 wherein the means operatively connected to the grooved portion of the disc comprises, at least one of the hanger bar pivot pins threadably mounted within the hanger bar.

Claim 6

A collapsible revolving door according to claim 1 wherein detent means extend between the hanger bar and the hanger disc to hold the door wing in a normal operative position relative to the center post.

Claim 7

In a collapsible revolving door of the type including a plurality of wings extending radially from a center post and connected thereto by hanger assemblies disposed at either end portion of the center post, each wing having a panel portion surrounded by a peripheral frame, each hanger assembly including a hanger disc secured to the center post, and a hanger bar secured to the respective door wing, said hanger bar having pins extending within a grooved portion formed in the hanger disc whereby the door wings are mounted for guided, independent, relative swinging movement relative to the center post for moving the door to the collapsed position; the improvement comprising, forming the hanger bar as an L-shaped bracket having one leg mounted on a horizontal portion of the peripheral frame and the other leg mounted on the vertical portion of the frame, mounting the hanger discs in close proximity to the lintel and bottom of the passageway containing the revolving door, the pins on the hanger bar at the lower end of the door extending downwardly into the grooved portion of the lower disc, the pins on the hanger bar at the upper end of the door extending upwardly into the grooved portion of the upper disc, whereby the hanger bars and discs are confined substantially within the vertical and horizontal planes containing the peripheral frame, whereby the panel portion of each wing is unobstructed by the hanger assembly.

Claim 8

In a collapsible revolving door of the type including a plurality of wings extending radially from a center post and connected thereto by hanger assemblies disposed at either end portion of the center post, each wing having a panel portion surrounded by a peripheral frame, each hanger assembly including a hanger disc secured to the center post, and a hanger bar secured to the respective door wing, said hanger bar having pins extending within a grooved portion formed in the hanger disc whereby the door wings are mounted for guided, independent, relative swinging movement relative to the center post for moving the door to the collapsed position; the improvement comprising, forming the hanger bar as an L-shaped bracket having one leg mounted on a horizontal portion of the peripheral frame and the other leg mounted on the vertical portion of the frame, mounting the hanger discs in close proximity to the lintel and bottom of the passageway containing the revolving door, the pins on the hanger bar at the lower end of the door extending downwardly into the grooved portion of the lower disc, the pins on the hanger bar at the upper end of the door extending upwardly into the grooved portion of the upper disc, whereby the hanger bars and discs are confined substantially within the vertical and horizontal planes containing the peripheral frame, whereby the panel portion of each wing is unobstructed by the hanger assembly.

Claim 9

A revolving door according to claim 5 wherein the detent means comprises, a cartridge having a spring biased ball projecting from one end thereof, the opposite end of said cartridge having a sleeve secured therein and a stem threadably mounted within said sleeve, a nut threadably mounted on said stem and engaging one end of a compression spring having its opposite end biased against said ball, whereby the biasing force of the spring may be varied by adjusting the position of the nut on the stem, and a fine adjustment of the biasing force by changing the position of the stem relative to the sleeve.

Claim 10

A revolving door according to claim 7 wherein the detent cartridge is mounted within the hanger bar, and the spring biased ball engages a spherical seat formed in the peripheral portion of the hanger disc.

Claim 11

A revolving door according to claim 8 wherein the detent cartridge is mounted within the hanger disc, and the spring biased ball engages a seat formed on the hanger bar.

Claim 12

A detent assembly comprising, a cartridge having a spring biased ball projecting from one end thereof, the opposite end of said cartridge having a sleeve secured therein and a stem threadably mounted within said sleeve, a nut threadably mounted on said stem and engaging one end of a compression spring having its opposite end biased against said ball, whereby the biasing force of the spring may be varied by adjusting the position of the nut on the stem, and a fine adjustment of the biasing force by changing the position of the stem relative to the sleeve.

Claim 13

A detent assembly comprising, a cartridge having a spring biased ball projecting from one end thereof, the opposite end of said cartridge having a sleeve secured therein and a stem threadably mounted within said sleeve, a nut threadably mounted on said stem and engaging one end of a compression spring having its opposite end biased against said ball, whereby the biasing force of the spring may be varied by adjusting the position of the nut on the stem, and a fine adjustment of the biasing force by changing the position of the stem relative to the sleeve.

Claim 14

A revolving door according to claim 5, wherein the detent means comprises, a housing secured to a portion of the hanger bar, a plunger slidably mounted in said housing, said plunger having a beveled end portion adapted to engage a similarly shaped notch portion formed in the periphery of said hanger disc, a spring mounted in said housing and having one end thereof engaging the opposite end of said plunger, the opposite end of said spring engaging a plug threadably mounted in said housing whereby the biasing force of the spring urging the beveled end portion into the notch may be varied; a slot formed in the surface of the plunger, and pin means mounted in said housing and extending into said slot to thereby prevent the plunger from being biased outwardly from the housing when the door is moved to a collapsed position.

Claim 15

A revolving door according to claim 5, wherein the detent means comprises, a housing secured to a portion of the hanger bar, a tube slidably mounted in said housing, a ball mounted in said tube and protruding from one end thereof, said ball adapted to engage a spherical seat formed on the peripheral edge of said hanger disc, a spring mounted within said housing and extending within said tube, one end of said spring engaging said ball and the opposite end thereof engaging a plug threadably mounted within said housing whereby the biasing force of the spring urging the ball into the spherical seat may be varied, a helical slot formed in the wall of said tube, and pin means extending through said housing and into the helical slot, whereby the axial position of the tube within the housing may be adjusted by rotating the tube.

Claim 16

A revolving door according to claim 6, wherein bolt means connects said other leg to said one leg of the L-shaped bracket, said bolt means extending through said hanger disc and forming one of the pins in the grooved portion of the hanger disc.