Wireless transmitter and doorbell system
First Claim
Patent Images
1. A wireless doorbell transmitter, comprising:
- a power source;
a metal doorbell case divided into at least two electrically isolated sections by an electrically non-conductive gap;
an electrical switch;
an antenna within said metal doorbell case;
an RF signal generator electronically connected to said electrical switch;
said power source, electrical switch, antenna and said RF signal generator electronically connected, said RF signal generator energized by said power source when said electrical switch is closed.
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Abstract
A wireless doorbell system which employs a radio frequency (“RF”) transmitter and a RF receiver. The doorbell transmitter has its RF source and antenna enclosed within a metal case which is designed so that the effective operating range of the transmission of the RF signals is not reduced to unacceptable levels and whose finish, such as polished brass, presents an attractive appearance which can be made to match the decorative trim at the entranceway to a building, such as a residence.
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Citations
18 Claims
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1. A wireless doorbell transmitter, comprising:
- a power source;
a metal doorbell case divided into at least two electrically isolated sections by an electrically non-conductive gap;
an electrical switch;
an antenna within said metal doorbell case;
an RF signal generator electronically connected to said electrical switch;
said power source, electrical switch, antenna and said RF signal generator electronically connected, said RF signal generator energized by said power source when said electrical switch is closed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a power source;
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10. A metalized housing wireless doorbell transmitter, comprising:
- a metal doorbell case divided into a first metal section and a second metal section;
a non-conductive gap material positioned between said first metal section and said second metal section;
an antenna located near said non-conductive gap material within said case;
a push-button switch electrically connected to said antenna, a power source and a radio frequency signal generator. - View Dependent Claims (11, 12, 13)
- a metal doorbell case divided into a first metal section and a second metal section;
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14. A wireless doorbell transmitter, comprising:
- a doorbell housing divided into a first section and a second section, each of said first and second section having a metal covering;
a non-conductive gap material positioned between said first metal section and said second metal section and having a width of at least 0.08 inches;
an antenna located near said non-conductive gap material within said case;
a push-button switch electrically connected to said antenna, a power source and a radio frequency signal generator.
- a doorbell housing divided into a first section and a second section, each of said first and second section having a metal covering;
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15. A metal wireless doorbell transmitter case, comprising:
- a metal doorbell case divided into at least two electrically isolated sections by an electrically non-conductive gap;
an electrical push button switch held within said doorbell case. - View Dependent Claims (16, 17)
- a metal doorbell case divided into at least two electrically isolated sections by an electrically non-conductive gap;
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18. A metal wireless doorbell transmitter case, comprising:
- a metal doorbell case divided into at least two electrically isolated sections by an electrically non-conductive gap of a polycarbonate material at least 0.08 inches;
an electrical push button switch held within said doorbell case;
an antenna positioned adjacent said non-conductive gap.
- a metal doorbell case divided into at least two electrically isolated sections by an electrically non-conductive gap of a polycarbonate material at least 0.08 inches;
Specification