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US 5,476,338 AGranted
Vehicle parking or passageway security barrier
AssigneeBuild-It Engineering Company, Inc.
InventorBarry Alberts
Life of this patent
Estimating the term…
Abstract
A bollard type security barrier apparatus for use in controlling ingress and egress to controlled areas. The apparatus if of simple design, is easily installed and includes a remotely operated positive drive mechanism for raising and lowering the bollard which is telescopically mounted within a sealed casing adapted to be mounted beneath the ground. The drive mechanism and the bollard are readily removable from the subterranean casing for repair or replacement; and, for certain applications, the upper portion of the bollard can be illuminated.
Claims13
A barrier apparatus for controlling access to a controlled space comprising:
- (a) a subterranean tubular casing having an upper end, a lower end and extending central axis;
- (b) a cylindrically shaped bollard coaxially aligned with said central axis and being telescopically movable within said casing between a first lowered position and a second raised position;
- (c) drive means disposed interiorly of said casing for controllably moving said bollard between said first and second positions, said drive means comprising:
- (i) an elongated support disposed interiorly of said casing;
- (ii) an elongated worm gear having a longitudinally extending axis, transversely spaced apart from said central axis of said casing;
- (iii) an electric motor means connected to said worm gear for controllably rotating said worm gear;
- (iv) a rack assembly including a rack having teeth matably engagable with said worm gear;
- and
- (v) connector means for connecting said bollard to said rack assembly of said drive means;
- and
- (d) guide means connected to said drive means for guiding movement of said bollard between said first and second positions, said guide means comprising a square tube connected to said elongated support of said drive means;
- and
- (e) closure means for closing said upper end of said casing, said closure means comprising a plate connected to said square tube member, said plate having a central aperture for closely receiving said bollard.
10 more elements
A barrier apparatus for controlling access to a controlled space comprising:
- (a) a casing having an upper end, a lower end and longitudinally extending central axis;
- (b) a bollard coaxially aligned with said central axis and being telescopically movable within said casing between a first lowered position and a second raised position;
- (c) drive means disposed interiorly of said casing for controllably moving said bollard between said first and second positions, said drive means comprising:
- (i) an elongated worm gear having a longitudinally extending axis, said worm gear being located within said casing so that said axis thereof is transversely spaced apart from said central axis of said casing:
- (ii) motor means connected to said worm gear for controllably rotating said worm gear;
- (iii) a rack assembly including a rack having teeth matably engagable with said worm gear said rack assembly comprising a moving means for controllably moving said rack toward and away from said worm gear for engagement and disengagement of said rack with said worm gear;
- and
- (iv) connector means for connecting said bollard to said rack assembly of said drive means;
- and
- (d) guide means connected to said drive means for guiding movement of said bollard between said first and second positions.
7 more elements
A barrier apparatus for controlling access to a controlled space comprising:
- (a) a casing having an upper end, a lower end and longitudinally extending central axis;
- (b) a bollard coaxially aligned with said central axis and being telescopically movable within said casing between a first lowered position and a second raised position, said bollard including a grooved shaft;
- (c) drive means disposed interiorly of said casing for controllably moving said bollard between said first and second positions, said drive means comprising:
- (i) an elongated worm gear having a longitudinally extending axis, said worm gear being located within said casing so that said axis thereof is transversely spaced apart from said central axis of said casing:
- (ii) motor means connected to said worm gear for controllably rotating said worm gear;
- (iii) a rack assembly including a rack having teeth matably engagable with said worm gear said rack assembly comprising a detent assembly releasably engagable with said grooved shaft of said bollard;
- and
- (iv) connector means for connecting said bollard to said rack assembly of said drive means;
- and
- (d) guide means connected to said drive means for guiding movement of said bollard between said first and second positions.
7 more elements
A barrier apparatus for controlling access to a controlled space comprising:
- (a) a subterranean tubular casing having an upper end, a lower end and extending central axis;
- (b) a cylindrically shaped bollard coaxially aligned with said central axis and being telescopically movable within said casing between a first lowered position and a second raised position;
- (c) drive means disposed interiorly of said casing for controllably moving said bollard between said first and second positions, said drive means comprising:
- (i) an elongated support disposed interiorly of said casing;
- (ii) an elongated worm gear having a longitudinally extending axis, transversely spaced apart from said central axis of said casing;
- (iii) an electric motor means connected to said worm gear for controllably rotating said worm gear;
- (iv) a rack assembly including a rack having teeth matably engagable with said worm gear, said rack assembly further including means for manually moving said rack into mating engagement with said worm gear;
- and
- (v) connector means for connecting said bollard to said rack assembly of said drive means;
- and
- (d) guide means connected to said drive means for guiding movement of said bollard between said first and second positions, said guide means comprising a square tube connected to said elongated support of said drive means;
- and
- (e) closure means for closing said upper end of said casing, said closure means comprising a plate connected to said square tube member, said plate having a central aperture for closely receiving said bollard.
10 more elements
Dependencies are inferred from the claim text.