# US 5,345,715 A · Serpentine structure for a turnstile

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- Number: US 5,345,715 A
- Document ID: US5345715A
- Status: Granted
- Kind: A
- Application number: 08/109,831
- Filed: 1993-08-20
- Granted: 1994-09-13
- Earliest claimed: 1993-08-20
- Assignees: Burle Technologies, Inc.
- Inventors: David M. Kosikowski; John W. Kane
- Web page: https://patentgrep.com/patent/US5345715A

## CPC

- E06B 11/08: Turnstiles; {Gates for control of entry or exit of persons, e.g. in supermarkets} (control gates on vehicles B60N5/00 {; bank protection devices E05G5/00}; with registering means G07C9/10 {; coin-freed facilities for turnstiles G07F17/14})
- E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00)

## Abstract

The invention is a turnstile gate with a serpentine configuration instead of conventional protruding arms. Both the stationary and revolving gates are formed of a continuous configuration of pipe which loops back and forth with substantial straight sections oriented horizontally. In order for the movable gate to pass through the stationary gate, the loops of the stationary gate must be offset from those of the revolving gate by one-half a cycle, and the loops of at least one of the gates must vary in their heights so that they can be located both outside and inside of the loops of the opposing gate. The advantages of the configuration are safety, ease of manufacture and greater strength, with a unique aesthetic appearance.

## Claims

### Claim 1

In a turnstile of the type which includes a stationary section which defines a plane and a movable section, with the movable section comprised of at least one wing which also defines a plane, with the plane of each wing of the movable section overlapping the plane of the stationary section when each wing approaches the stationary section, with both the stationary section and the wings of the movable section comprising several horizontal structures with spaces between the horizontal structures, and with the horizontal structures of each wing located so that they pass through the spaces of the stationary section as the wing is moved past the stationary section, the improvement comprising:
the horizontal structures of the stationary section and the horizontal structures of each wing of the movable section comprising loops formed with horizontal segments and curved sections joining horizontal segments which are vertically displaced from each other.

### Claim 2 (depends on 1)

The turnstile of claim 1 wherein the loops of the stationary section form a continuous serpentine structure, and the loops of at least one section are constructed with loops of at least two different pitches.

### Claim 3 (depends on 1)

The turnstile of claim 1 wherein the loops of the wings of the movable section form continuous serpentine structures, and the loops of at least one section are constructed with loops of at least two different pitches.

### Claim 4 (depends on 1)

The turnstile of claim 1 wherein the loops of the stationary section and the loops of the wings of the movable section are made of identical serpentine configurations, with adjacent loops of both sections of different pitch, and the loops of the moving section are offset from the loops of the stationary section by the spacing of one loop.

### Claim 5 (depends on 1)

The turnstile of claim 1 further including at least one support strut connecting a loop to a support structure.