US4422316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key case
Assignee: Individual
•
Filing: 1981-07-16
•
Granted: 1983-12-27
•
Expires: 2001-07-16
Abstract
Abstract This invention relates to the key case that is adapted to be attached to a fixed location on or adjacent a door that is attached to a casing by hinges and has a lock openable with a key. The key case has a sleeve for receiving the conventional hinge pin of an interleaved hinge so that the key case is located in a readily locatable position with respect to the door. The key case has a retracting mechanism with a flexible member attached thereto and the key attached to the free end thereof. Stop means are located within the key case and define a stored position for the key wherein a portion extends through an opening in the case to be gripped by a user and retracted and moved to the lock. The retracting mechanism automatically returns the key to the stored position whenever it is dropped or released.
Inventors
- 👤 Richard D. Thomas
- 👤 William R. Kjeldsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:55
CPC Classifications
A; A47; A47G; A47G29/00; A47G29/10; E; E05; E05D; E05D11/00; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676; Y10T70/8703
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
184 words
In combination with a door attached to a door frame by hinge means having a removable pin and including a lock on said door having a lock cylinder for receiving a key for operating said lock cylinder, a key case having a sleeve adapted to be aligned with the hinge means of the door and to receive said removable pin for securement to said hinge means, a retracting mechanism in said key case including a flexible member having a length at least as great as the spacing between said hinge means and said lock cylinder attached at the free end of the flexible member, an opening in the key case for admitting the key, and stop means within the key case defining a stored position for said key whereby a portion of the key extends outwardly through the opening in the key case, said portion of the key being adapted to be gripped in an emergency situation and moved to said lock cylinder to operate it and said retracting mechanism being adapted to return said key to its stored position when released or dropped.
Claim 2
Dependent Claim
184 words
In combination with a door attached to a door frame by hinge means having a removable pin and including a lock on said door having a lock cylinder for receiving a key for operating said lock cylinder, a key case having a sleeve adapted to be aligned with the hinge means of the door and to receive said removable pin for securement to said hinge means, a retracting mechanism in said key case including a flexible member having a length at least as great as the spacing between said hinge means and said lock cylinder attached at the free end of the flexible member, an opening in the key case for admitting the key, and stop means within the key case defining a stored position for said key whereby a portion of the key extends outwardly through the opening in the key case, said portion of the key being adapted to be gripped in an emergency situation and moved to said lock cylinder to operate it and said retracting mechanism being adapted to return said key to its stored position when released or dropped.
Claim 3
Dependent Claim
58 words
The combination as defined in claim 1 in which said hinge means includes interleaved hinge portions with said pin extending through said hinge portions, said sleeve being positioned adjacent one end of one edge of said key case, said one edge having a conforming configuration with a periphery of said hinge portions and being in juxtaposed relation thereto.
Claim 4
Dependent Claim
65 words
The combination as defined in claim 1 in which said key has a head portion and said key case has lugs spaced from each other by a dimension less than the width of the head of said key and spaced from said opening by a dimension less than the length of said key to define a stop which defines said stored position for said key.
Claim 5
Dependent Claim
176 words
In a door attached to a casing by hinge means and having a lock operable with a key having a head portion and a shank portion, the improvement comprising: a key case for a key for said lock attached at a fixed location spaced from said lock, a spring operated retracting mechanism in said key case including a flexible member with said key connected to an end thereof, said flexible member having a length at least equal to the spacing between said fixed location and said lock, and an opening in said key case defined by inwardly extending guide surfaces at the base of the key case for guiding said key to a stored position in the key case wherein only the end of the shank portion of said key is exposed outside said opening for gripping to enable the key to be moved to said lock, said retracting mechanism returning said key to said stored position upon being released or dropped so that said key is readily locatable at said fixed location in emergency situations.
Claim 6
Dependent Claim
176 words
In a door attached to a casing by hinge means and having a lock operable with a key having a head portion and a shank portion, the improvement comprising: a key case for a key for said lock attached at a fixed location spaced from said lock, a spring operated retracting mechanism in said key case including a flexible member with said key connected to an end thereof, said flexible member having a length at least equal to the spacing between said fixed location and said lock, and an opening in said key case defined by inwardly extending guide surfaces at the base of the key case for guiding said key to a stored position in the key case wherein only the end of the shank portion of said key is exposed outside said opening for gripping to enable the key to be moved to said lock, said retracting mechanism returning said key to said stored position upon being released or dropped so that said key is readily locatable at said fixed location in emergency situations.
Claim 7
Dependent Claim
41 words
In a door arrangement as claimed in claim 4, stop means provided in said key case, said stop means being positioned inwardly of said opening for engaging the head of said key when the key is retracted to its stored position.
References Cited (Backward Citations)
US1802402A
Cited
US3640108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |