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Patent 15812 Summary

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Claims and Abstract availability

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(12) Patent: (11) CA 15812
(21) Application Number: 15812
(54) English Title: IMPROVEMENTS ON DOOR BALANCES
(54) French Title: PERFECTIONNEMENTS AUX VALETS DES PORTES
Status: Term Expired - Post Grant Beyond Limit
Bibliographic Data
(51) International Patent Classification (IPC): N/A
(72) Inventors :
  • SEXTON, WILLIAM F. (Canada)
  • SEXTON, WILLIAM F. JR. (Canada)
(73) Owners :
  • WILLIAM F. SEXTON
  • WILLIAM F. JR. SEXTON
(71) Applicants :
(74) Agent:
(74) Associate agent:
(45) Issued: 1882-11-21
(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

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Claims

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

Claim lst In connection with a hinged door, the cotmbination of a weighted lever so connected to the door that the ower of the lever shall be directed in holding the door closed. 2nd In connection with a hinged door, a pivoted lever provided with an adjustable weight and connected by a chain to a lever pivoted to the door jamb, in combination with a lever also pivoted to the door jamb, its other end being connected to the back edge of the door by a link. 3rd In connection with a hinged door, a pivoted lever provided with an adjustable weight and connected to the door by a chain and lever, in combination with a sheave pulley pivoted upon an arm extending from a casting secured to the door jamb, and arranged for the purpose of directing the chain from a vertical to a horizontal direction.
Description

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Representative Drawing

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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.

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Event History

Description Date
Inactive: Expired (old Act Patent) latest possible expiry date 1900-11-21
Grant by Issuance 1882-11-21

Abandonment History

There is no abandonment history.

Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
WILLIAM F. SEXTON
WILLIAM F. JR. SEXTON
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.
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