US3752520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container door latch
Assignee: AAR Corp
•
Filing: 1971-10-27
•
Granted: 1973-08-14
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Expires: 1991-10-27
Abstract
Abstract A latch for securing a pair of members in fixed relation relative to one another. One of the members carries a stud which has a frusco-conical head portion and an annular groove. The other member carries a sliding latch plate which has a U-shaped notch at one end. The latch plate is slidably received in a housing and is movable between a closed position in which the Ushaped notch of the latch member engages the annular groove of the stud and an open position in which the latch member is clear of the stud.
Inventors
- 👤 W Sprick
- 👤 O Meller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:37
CPC Classifications
E; E05; E05C; E05C1/00; E05C1/02; E05C1/04; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1022; Y10T292/1025; Y10T292/103; Y10T292/42; Y10T292/432
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
200 words
A latch for securing two relatively movable members in fixed relation to one another, comprising: a stud adapted to be secured to one of the members, the stud having an annular groove, a latch plate having a flat body portion with an open-ended notch at one end, the notch having a U-shaped inner portion cooperating in a close sliding engagement with the groove of the stud, the latch plate having an end portion opposite to the notch extending at right angles to the body portion to serve as a handle, and a tab portion extending at right angles to the end portion and the body portion, a housing adapted to be secured to the other of said members, the housing enclosing and slidably receiving the latch plate along a line perpendicular to the longitudinal axis of the stud between a first position in which the notch of the plate engages the annular groove of the stud, and a second position in which the latch plate is remote from the stud, and means provided to secure the tab portion of the latch plate in fixed relation to at least one of the members with the latch plate in its first position.
Claim 2
Dependent Claim
200 words
A latch for securing two relatively movable members in fixed relation to one another, comprising: a stud adapted to be secured to one of the members, the stud having an annular groove, a latch plate having a flat body portion with an open-ended notch at one end, the notch having a U-shaped inner portion cooperating in a close sliding engagement with the groove of the stud, the latch plate having an end portion opposite to the notch extending at right angles to the body portion to serve as a handle, and a tab portion extending at right angles to the end portion and the body portion, a housing adapted to be secured to the other of said members, the housing enclosing and slidably receiving the latch plate along a line perpendicular to the longitudinal axis of the stud between a first position in which the notch of the plate engages the annular groove of the stud, and a second position in which the latch plate is remote from the stud, and means provided to secure the tab portion of the latch plate in fixed relation to at least one of the members with the latch plate in its first position.
Claim 3
Dependent Claim
26 words
The latch according to claim 1 further including stop means carried by the housing and engaging the latch plate to determine the first and second positions.
Claim 4
Dependent Claim
42 words
The latch according to claim 2 wherein the latch plate is provided with an elongated slot extending parallel to the direction of movement of the plate, the stop member comprising a pin-like member secured to the housing and projecting into the slot.
Claim 5
Dependent Claim
22 words
The latch according to claim 3 further including means for releasably retaining the latch plate in either the first or second position.
Claim 6
Dependent Claim
49 words
The latch according to claim 4 wherein the retaining means comprises a spring carried by the housing and engaging the slot of the latch plate when the plate is in its first position and engaging the notch of the latch plate when the plate is in its second position.
Claim 7
Dependent Claim
65 words
A latch according to claim 1 where the other member includes a web portion in parallel adjacent relation to the tab portion of the latch plate, and the means to secure the tab portion to the web portion are aligned holes through said two portions with the latch in the first position, said holes adapted to receive a retaining member to maintain their aligned relation.
Claim 8
Dependent Claim
32 words
A latch according to claim 1 where the outer portion of the notch of the latch plate has diverging sides, at least one of the surfaces of the diverging sides being chamfered.
Claim 9
Dependent Claim
49 words
The latch according to claim 7 which includes a strike plate in conjunction with the housing and wherein the housing and stike plate are provided with aligned openings of substantially the same diameter therethrough permitting the head portion of the stud to pass through the strike plate and housing.
Claim 10
Dependent Claim
55 words
The latch assembly according to claim 8 where the housing and strike plate are mounted to a reinforcing beam which includes a hole of the same diameter as and aligned with the holes in the housing and strike plate thRough which the stud passes when passing through the holes of the strike plate and housing.
Claim 11
Dependent Claim
45 words
The latch assembly according to claim 1 wherein a portion of the latch plate which is concealed by the housing when the plate is in its first position and exposed when the plate is in its second position is provided with a readily visible marking.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |