Housing structure for an access control RFID reader

• US 5,378,880 A
• Filed: 08/20/1993
• Issued: 01/03/1995
• Est. Priority Date: 08/20/1993
• Status: Expired due to Fees

• Current Assignee: HID Corporation (Assa Abloy AB)
• Original Assignee: Indala Corporation (Assa Abloy AB)
• Inventors: Eberhardt, Noel H.
• Primary Examiner(s): Willis, Davis L.
• Assistant Examiner(s): Sikorski, Edward
• Application Number:
  US08/109,931
• Time in Patent Office: 501 Days
• Field of Search: 235/382, 235/435, 235/439, 235/441, 235/449, 235/451, 235/482, 235/483, 361/179, 361/180, 340/551
• US Class Current: 235/439
• CPC Class Codes: G06K 7/10346 the antenna being of the far field type, e.g. HF types or dipoles

Abstract

A radio frequency proximity reader has a base plate housing portion that has an essentially rectangular shape with first and second opposed major surfaces and a centrally located bore. A cylindrical housing portion having a concentrically placed bore is attached to the base plate and extends substantially perpendicular to the first major surface, with the bores of the housing portions being substantially aligned. A radio frequency antenna including a cylindrical ferrite core having at least one concentrically wound coil is concentrically located within the cylindrical housing portion. A light emitting diode and a piezo buzzer are provided within the cylindrical housing portion adjacent the second major surface of the base plate. A cable electronically connects the reader to remotely located signal processing circuits. The base plate may be attached to a wall, whereby the first surface abuts the wall. A rectangular cover attached to the base plate covers the second major surface of the base plate.

Claims

1. A radio frequency proximity reader, comprising:

a base plate housing portion having an essentially rectangular shape with first and second opposed major surfaces and having a centrally located bore extending through said base plate between said first and second major surfaces;

a cylindrical housing portion having a concentrically placed bore therethrough, said cylindrical housing portion being attached to said base plate and extending substantially perpendicular to said first major surface with the bores of said housing portions being substantially aligned;

a radio frequency antenna including a cylindrical ferrite core having at least one concentrically wound coil, concentrically located within said cylindrical housing portion;

at least one signaling means located within said cylindrical housing portion adjacent said second major surface of said base plate;

a cable electrically connected to said at least one coil and said signaling means and extending out of said cylindrical housing portion for connecting the antenna and signaling means to remotely located signal processing circuits;

means for attaching said base plate to a wall, whereby said first major surface abuts against the wall; and

a rectangular cover attached to said base plate and covering said second major surface of said base plate.

2. A radio frequency proximity reader as defined in claim 1, wherein said at least one signaling means comprising a light emitting diode.

3. A radio frequency proximity reader as defined in claim 2, wherein said cover allows for the emittance of light from said light emitting diode.

4. A radio frequency proximity reader as defined in claim 1, said at least one signaling means comprising a piezo beeper.

5. A radio frequency proximity reader as defined in claim 1, wherein said antenna includes a pair of coils for transmitting and receiving coded data signals.

6. A radio frequency proximity reader as defined in claim 1, said cylindrical housing portion having a first end press fitted into said base plate bore.