US3855824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key retaining lock
Assignee: Fort Lock Corp
•
Filing: 1973-12-10
•
Granted: 1974-12-24
•
Expires: 1993-12-10
Abstract
Abstract A locking device of the type having a padlock body and a split shackle for receiving a flexible cable or the like attached to the shackle parts, wherein one of the shackle parts remains fixed to the lock body while the other is detached by the key actuated lock and provision is made for preventing the removal of the key when the lock is opened and the removable shackle part is separated from the lock body. Return of the lock to the key removal position is permitted only when the removable shackle is properly in place so that it is positively assured that locking has been completed when the key is removed.
Inventors
- 👤 M Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:24
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/12; E05B63/121; E05B67/00; E05B67/003; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/459; Y10T70/483; Y10T70/70; Y10T70/7441; Y10T70/7768
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
255 words
A locking device having a padlock body and first and second shacklE parts interconnected by flexible cable or the like and having a key receiving locking mechanism which when rotated by a proper key inserted in the lock and rotated from a ''''lock'''' position to a lock ''''open'''' position, means associated with the key and locking mechanism prevents removal of the key, the combination comprising, rotatable retaining means connected to said lock mechanism disposed in said padlock body, said first and second shackle parts being received in bore means on opposite sides of said retaining means in the body, fixing means disposed between the retaining means and each of the shackle parts bearing against the retaining member and the shackle parts when the lock mechanism is in the ''''lock'''' position for holding said first and second shackle parts fixed to the padlock body, and said retaining means having indentation means thereon so that rotation with the lock mechanism to the ''''open'''' position aligns said indentation means with one of said shackle fixing means providing clearance therefor and the first shackle part associated therewith may be removed from the body bore means, plunger means contained within said removable shackle bore means being normally biased outwardly for movement against said shackle fixing means when the removable shackle is removed thereby holding said shackle fixing means in engagement with said retaining member indentation means and preventing rotation of said retaining member, locking mechanism and key to the ''''lock'''' position where said key may be removed from the lock.
Claim 2
Dependent Claim
255 words
A locking device having a padlock body and first and second shacklE parts interconnected by flexible cable or the like and having a key receiving locking mechanism which when rotated by a proper key inserted in the lock and rotated from a ''''lock'''' position to a lock ''''open'''' position, means associated with the key and locking mechanism prevents removal of the key, the combination comprising, rotatable retaining means connected to said lock mechanism disposed in said padlock body, said first and second shackle parts being received in bore means on opposite sides of said retaining means in the body, fixing means disposed between the retaining means and each of the shackle parts bearing against the retaining member and the shackle parts when the lock mechanism is in the ''''lock'''' position for holding said first and second shackle parts fixed to the padlock body, and said retaining means having indentation means thereon so that rotation with the lock mechanism to the ''''open'''' position aligns said indentation means with one of said shackle fixing means providing clearance therefor and the first shackle part associated therewith may be removed from the body bore means, plunger means contained within said removable shackle bore means being normally biased outwardly for movement against said shackle fixing means when the removable shackle is removed thereby holding said shackle fixing means in engagement with said retaining member indentation means and preventing rotation of said retaining member, locking mechanism and key to the ''''lock'''' position where said key may be removed from the lock.
Claim 3
Dependent Claim
20 words
A locking device as claimed in claim 1 wherein said shackle fixing means comprises a pair of hardened metal balls.
Claim 4
Dependent Claim
49 words
A locking device as claimed in claim 1 wherein said locking mechanism includes cam and stop means for limiting the rotation of said retaining member between said one shackle fixing means alignment position and an intermediate position while preventing alignment of said indentation with the other shackle fixing means.
Claim 5
Dependent Claim
36 words
A locking device as claimed in claim 1 wherein said removable shackle is bent so as to include a portion angularly oriented with respect to the portion of said shackle received in the body bore means.
Claim 6
Dependent Claim
34 words
A locking device as claimed in claim 1 wherein said removable shackle and the body bore means receiving the same includes cooperating polarizing means for orienting and guiding the shackle part into the bore.
Claim 7
Dependent Claim
40 words
A locking device as claimed in claim 5 wherein said polarizing means comprises a longitudinally extending slot in said shackle and a pin in said body projecting into said bore, said pin restraining the outward movement of said plunger means.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |