US4387917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panic bolt units
Assignee: MICO Ltd WRIGHT ST
•
Filing: 1979-12-26
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Granted: 1983-06-14
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Expires: 1999-12-26
Abstract
Abstract A door lock and release mechanism carried by a door and having a pair of oppositely directed locking bolts simultaneously movable to a release position by a door mounted operating bar. Provision is also made for moving the bolts to a locking position when the door is closed.
Inventors
- 👤 Michael J. Cocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:23
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/18; E05B63/20; E05B65/00; E05B65/10; E05B65/1006; E05B65/1013; E05B65/1046; E05B65/106; E05B65/1066; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0834; Y10T292/0836; Y10T292/0844; Y10T292/0908; Y10T292/0909
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A door lock and panic bolt unit release mechanism comprising a box section member mounted in a door and housing two vertically sliding bolts adapted to move in opposite directions, a pair of U-shaped slotted plates to which the bolts are respectively secured, pegs extending from the box section member and passing through the slots in the slotted plates, a T-member on pins projecting from the slotted plates a spindle non-rotatably connected to the T-member, a cam onto the spindle, and a lever engaging the cam and by which the cam is rotated by pressure to release the bolts from a door.
Claim 2
Dependent Claim
102 words
A door lock and panic bolt unit release mechanism comprising a box section member mounted in a door and housing two vertically sliding bolts adapted to move in opposite directions, a pair of U-shaped slotted plates to which the bolts are respectively secured, pegs extending from the box section member and passing through the slots in the slotted plates, a T-member on pins projecting from the slotted plates a spindle non-rotatably connected to the T-member, a cam onto the spindle, and a lever engaging the cam and by which the cam is rotated by pressure to release the bolts from a door.
Claim 3
Dependent Claim
33 words
A door lock and panic bolt release mechanism as in claim 1, in which the lever is actuated by a bar extending transversely of the door pressure on the bar operating the lever.
Claim 4
Dependent Claim
20 words
A door lock and panic bolt release mechanism as in claim 1, duplicated at the hinge edge of the door.
Claim 5
Dependent Claim
28 words
A door lock and panic bolt release mechanism as in anyone of the preceeding claims 1-3, in which the door is recessed to accommodate the box section member.
Claim 6
Dependent Claim
24 words
A door lock as in claim 1 in which a release mechanism is duplicated on both sides of the closing edge of the door.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |