US3832804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door assemblies
Assignee: BAC AND BRITISH AEROSPACE
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Filing: 1973-07-31
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Granted: 1974-09-03
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Expires: 1993-07-31
Abstract
Abstract A door assembly, in which the door is liable to become distorted when open, is provided with a plurality of latching units each with an actuation means to effect latching and a sensing device which senses when its associated latching unit is in a position to be latched and then causes its actuation means to effect latching, the assembly being arranged such that when, due to any distortion present, perhaps just one latching unit becomes latched as the door is closed such latching is effective to cause a further sensing device to cause latching of its associated latching unit and so on in random sequence.
Inventors
- 👤 H Goldsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:58
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; E; E05; E05C; E05C9/00; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/081
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
A door assembly including in combination a hinged door, an adjacent member to which the door is latched when closed, and a plurality of spaced latching units, each with an actuation means to effect latching and a sensing device which senses when its associated latching unit is in a poSition to be latched and then causes its actuation means to effect latching, and means operative when one latching unit is latched to cause a sensing device of a further latching unit to operate as aforesaid to cause latching of said further latching unit.
Claim 2
Dependent Claim
93 words
A door assembly including in combination a hinged door, an adjacent member to which the door is latched when closed, and a plurality of spaced latching units, each with an actuation means to effect latching and a sensing device which senses when its associated latching unit is in a poSition to be latched and then causes its actuation means to effect latching, and means operative when one latching unit is latched to cause a sensing device of a further latching unit to operate as aforesaid to cause latching of said further latching unit.
Claim 3
Dependent Claim
18 words
A door assembly according to claim 1 in which the said adjacent member is a further hinged door.
Claim 4
Dependent Claim
54 words
A door assembly according to claim 1 wherein the sensing devices include a pivotally mounted cam follower engageable with a cam track arranged to effect pivotal movement of the said follower and a signalling device arranged to yield a latching signal to the associated actuator at a predetermined pivotal position of the said follower.
Claim 5
Dependent Claim
33 words
A door assembly according to claim 1 in which the latching units have engagement portions so shaped that subsequent to any initial engagement the engagement portions are drawn into a fully latching engagement.
Claim 6
Dependent Claim
29 words
A door assembly according to claim 4 in which the latching units, when in the full latching engagement position, are held in that position by an ''''over centre'''' mechanism.
Claim 7
Dependent Claim
158 words
A door assembly including in combination a door, an adjacent fixed structure to which the door is hinged, an adjacent member, which may or may not be part of the said adjacent fixed structure, to which the door is latched when closed, and a plurality of spaced latching units each of which has an engagement portion carried by the door and an engagement portion carried by the said adjacent member, actuation means to urge the engagement portions into latching engagement, and a sensing device operatively associated with the actuation means to sense when the engagement portions are sorelatively positioned to be engageable, and means operative when the engagement portions of one latch unit are urged into latching engagement such engagement is effective to so position the engagement portions of a further latch unit that the sensing device of that further latch unit causes its actuator means to urge the engagement portions of that latching unit into latching engagement.
Claim 8
Dependent Claim
158 words
A door assembly including in combination a door, an adjacent fixed structure to which the door is hinged, an adjacent member, which may or may not be part of the said adjacent fixed structure, to which the door is latched when closed, and a plurality of spaced latching units each of which has an engagement portion carried by the door and an engagement portion carried by the said adjacent member, actuation means to urge the engagement portions into latching engagement, and a sensing device operatively associated with the actuation means to sense when the engagement portions are sorelatively positioned to be engageable, and means operative when the engagement portions of one latch unit are urged into latching engagement such engagement is effective to so position the engagement portions of a further latch unit that the sensing device of that further latch unit causes its actuator means to urge the engagement portions of that latching unit into latching engagement.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |