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Patent 25967 Summary

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Claims and Abstract availability

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(12) Patent: (11) CA 25967
(21) Application Number: 25967
(54) English Title: GRAVITATION LOCK
(54) French Title: SERRURE A DETENTE
Status: Term Expired - Post Grant Beyond Limit
Bibliographic Data
(51) International Patent Classification (IPC): N/A
(72) Inventors :
  • SANDFORD, CHARLES (Canada)
(73) Owners :
  • CHARLES SANDFORD
(71) Applicants :
(74) Agent:
(74) Associate agent:
(45) Issued: 1887-02-10
(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 A latch lock, composed of a reversible cam ended latch-bolt B, Bi, Bii, having its cam end geared into a pivoted gravitation tumbler C operated by square knob spindle, the latch adapted to be dead stopped or operated by a key, substantially as shown and described. 2nd The combination of the casing A, Ai, a, a1, bolt B, B1, B11, tumbler C, notches Ci, C11, c, c1, stop D, d, di, and key hole E, substantially as shown an described. 3rd The combination of the bevelled bolt-head B, slot b, pin a, shank B, cams B11 and stops D, substantially as shown and described. 4th The combination of the tumbler C, notches C1, C11, bearings c, with square eye cl, substantially as shown and described. 5th The combination of the bolt B, B1, B11, b, pin a, tumbler C, notches C1, C11, bearings c and eye c1, substantially as shown and described.
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 1905-02-10
Grant by Issuance 1887-02-10

Abandonment History

There is no abandonment history.

Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
CHARLES SANDFORD
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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