US4570290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge having a laterally outwardly extending flat spring
Assignee: Hartwell Corp
•
Filing: 1984-12-14
•
Granted: 1986-02-18
•
Expires: 2004-12-14
Abstract
Abstract A quick release hinge/latch for removably attaching two surfaces including a keeper adapted to attach to a surface and having an edge portion in the form of a hollow keeper tube, a housing adapted to attach to another adjacent surface and also having an edge portion in the form of a hollow housing tube such that the keeper tube and housing tube fit together to form an extended tube, a pin which slides within the extended tube to detachably connect the keeper and housing and a flat spring/actuator which attaches to the pin through an opening in the housing tube. The spring/actuator when in a first position holds the pin partially extended into the keeper tube. When the leg portions of the spring/actuator are pinched together and into a second position the pin is withdrawn from the keeper tube. The pinched spring/actuator can then be rotated about the housing tube axis into a third position where the spring/actuator locks into a radial opening in the housing tube to thereby lock the pin entirely within the housing tube allowing easy detachment of the housing from the keeper.
Inventors
- 👤 John P. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:54
CPC Classifications
E; E05; E05D; E05D7/00; E05D7/10; E05D7/1005; E05D7/1011
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
106 words
A quick release hinge/latch comprising a housing having a first tube thereon; a pin adapted to slide within said first tube and including a flat spring integrally formed therewith having a first end fixed relative to said housing and a second end integral with said pin, said pin and spring being of one piece construction, said flat spring biasing said pin axially outwardly of said first tube and extending laterally outwardly of said tube from each said end of said flat spring for manual gripping between said ends laterally outwardly of said tubes to compress said flat spring and retract said pin into said first tube.
Claim 2
Dependent Claim
106 words
A quick release hinge/latch comprising a housing having a first tube thereon; a pin adapted to slide within said first tube and including a flat spring integrally formed therewith having a first end fixed relative to said housing and a second end integral with said pin, said pin and spring being of one piece construction, said flat spring biasing said pin axially outwardly of said first tube and extending laterally outwardly of said tube from each said end of said flat spring for manual gripping between said ends laterally outwardly of said tubes to compress said flat spring and retract said pin into said first tube.
Claim 3
Dependent Claim
30 words
The quick release hinge/latch of claim 1 further comprising a keeper having a second tube adapted to receive said pin therein when said pin is outwardly of said first tube.
Claim 4
Dependent Claim
13 words
The quick release hinge/latch of claim 1 wherein said flat spring is C-shaped.
Claim 5
Dependent Claim
27 words
The quick release hinge/latch of claim 3 wherein said flat spring has serrated surfaces on the portions of said flat spring extending laterally outwardly of said tube.
Claim 6
Dependent Claim
29 words
The quick release hinge/latch of claim 1 wherein said first tube includes a lateral opening having an axially extending portion through which said second end extends to said pin.
Claim 7
Dependent Claim
20 words
The quick release hinge/latch of claim 1 wherein said pin, flat spring, and housing are integrally formed in one piece.
Claim 8
Dependent Claim
118 words
A quick release hinge/latch comprising a housing having a first tube thereon; pins adapted to slide within said first tube, said pins including a flat spring integrally formed with said pins and having a first end integrally fixed to a first said pin and a second end integrally fixed to a second said pin, said pins and said spring being of one piece construction, said flat spring biasing said first and second pins axially outwardly of said first tube and extending laterally outwardly from said tube from each said end of said flat spring for manual gripping between said ends laterally outwardly of said tubes to compress said flat spring and retract said pins into said first tube.
Claim 9
Dependent Claim
118 words
A quick release hinge/latch comprising a housing having a first tube thereon; pins adapted to slide within said first tube, said pins including a flat spring integrally formed with said pins and having a first end integrally fixed to a first said pin and a second end integrally fixed to a second said pin, said pins and said spring being of one piece construction, said flat spring biasing said first and second pins axially outwardly of said first tube and extending laterally outwardly from said tube from each said end of said flat spring for manual gripping between said ends laterally outwardly of said tubes to compress said flat spring and retract said pins into said first tube.
Claim 10
Dependent Claim
13 words
The quick release hinge/latch of claim 7 wherein said flat spring is C-shaped.
Claim 11
Dependent Claim
31 words
The quick release hinge/latch of claim 7 wherein said first tube includes two lateral openings having axially extending portions through which said ends of said flat spring extend to said pins.
Claim 12
Dependent Claim
36 words
The quick release hinge/latch of claim 9 wherein said lateral openings have radially extending portions adapted to receive the ends of said flat spring with said flat spring compressed to retract said pins into said tube.
References Cited (Backward Citations)
US2186789A
Cited
FR1338240A
Cited
US3284842A
Cited
US3908227A
Cited
US3924293A
Cited
US4178657A
Cited
US4455711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-17 | 1989-08-19 | 1990-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-17 | 1993-08-19 | 1994-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-17 | 1997-08-19 | 1998-02-18 | $7700.00 | Window Closed / Lapsed |