Language selection

/ Gouvernement du Canada
Search

Patent 27396 Summary

Third-party information liability

Some of the information on this Web page has been provided by external sources. The Government of Canada is not responsible for the accuracy, reliability or currency of the information supplied by external sources. Users wishing to rely upon this information should consult directly with the source of the information. Content provided by external sources is not subject to official languages, privacy and accessibility requirements.

Claims and Abstract availability

Any discrepancies in the text and image of the Claims and Abstract are due to differing posting times. Text of the Claims and Abstract are posted:

  • At the time the application is open to public inspection;
  • At the time of issue of the patent (grant).
(12) Patent: (11) CA 27396
(21) Application Number: 27396
(54) English Title: TEMPERATURE ALARM SYSTEM
(54) French Title: THERMOMETRE A SONNERIE
Status: Term Expired - Post Grant Beyond Limit
Bibliographic Data
(51) International Patent Classification (IPC): N/A
(72) Inventors :
  • MORRISON, ALBERT E. (Canada)
(73) Owners :
  • ALBERT E. MORRISON
(71) Applicants :
(74) Agent:
(74) Associate agent:
(45) Issued: 1887-08-12
(22) Filed Date:
Availability of licence: N/A
Dedicated to the Public: N/A
(25) Language of filing: English

Patent Cooperation Treaty (PCT): No

(30) Application Priority Data: None

Abstracts

Sorry, the abstracts for patent document number 27396 were not found.

Claims

Note: Claims are shown in the official language in which they were submitted.

Claim lst In a temperature electric-signal system, the combination of a thermostat and two electric circuits, each containing an electric signal and said thermostat, the said thermostat consisting of a thermometer, the mercury in whose bulb constitutes one terminal of said circuits, and contact points located at different heights in the stem of said thermometer constituting the other terminals of said circuits. 2nd In a temperature alarm system, the combination of a central annunciator located in the office of a hotel or similar building, a fire alarm, electric bell, or similar signal located in the city fire department, thermostats located in the room or halls of said building, and two electric circuits, the one including said annunciator and normally open at all temperatures below a contact point fixed at say 65 degrees, or summer heat, the other including said bell and normally open at all temperature below a contact point normally adjustable at a higher temperature, substantially as described. 3rd In a temperature alarm system, the combination of a central annunciator located in the office of a hotel or similar building, a fire alarm, electric bell, or similar signal located in the city fire department, two electric circuits, the one including the said annunciator and thermostat, and the other including said bell and said thermostat, the said thermostat consisting of the combination of a thermometer whose mercury or other fluid constitutes the terminals of both circuits, and whose tube contains the other terminals, one of which is fixed at a certain degree, say summer heat, and the other of which is adjustable at a higher degree, and is provided with a suitable locking device, as and for the purpose described. 4th In a temperature alarm system, a thermostat consisting of a thermometer bulb and tube, a base plate therefor, a rod adjustable in said tube, a ring upon the upper end of said rod, a projection provided with holes adjacent to said ring and secured to said base plate, a locking device connecting said ring and said projection, and an electric signal circuit normally open and including said rod and the mercury of said thermometer, substantially as described.
Description

Note: Descriptions are shown in the official language in which they were submitted.

Sorry, the description for patent document number 27396 was not found. Text is not available for all patent documents. The current dates of coverage are on the Currency of Information  page

Representative Drawing

Sorry, the representative drawing for patent document number 27396 was not found.

Administrative Status

2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.

Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.

For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Event History , Maintenance Fee  and Payment History  should be consulted.

Event History

Description Date
Inactive: Expired (old Act Patent) latest possible expiry date 1905-08-12
Grant by Issuance 1887-08-12

Abandonment History

There is no abandonment history.

Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
ALBERT E. MORRISON
Past Owners on Record
None
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.
Documents

To view selected files, please enter reCAPTCHA code :



Sorry, no documents were found