Patent US3855826A successfully refreshed from Google Patents.
US3855826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Padlock
Assignee: HORI LOCK KOGYO KK
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Filing: 1973-05-02
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Granted: 1974-12-24
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Expires: 1993-05-02
Abstract
Abstract The padlock according to this invention comprises a hard metal barrel, a hard metal shackle of a U-form, a locking bar which is rotatively placed within said barrel and extends at right angles to the legs of the shackle so as to intersect partially and a cylinder head for bringing said locking bar to locking or unlocking position. At the intersections, said locking bar and the legs of shackle are provided with semicircular depressions. The characteristic of this invention resides in installing the cylinder head free of picking or tampering. For this purpose, the cylinder head is inserted in a hard metal cylindrical block from behind and the latter is placed in the corresponding frontal depression of the barrel and fixed thereto by means of screws inserted from behind. Long holes for admitting the entrance of a screw driver are drilled within the barrel so as to extend at right angles to the legs of the shackle.
Inventors
- 👤 H Hori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:17
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/22; Y; Y10; Y10S; Y10S70/00; Y10S70/57; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/459; Y10T70/70; Y10T70/7441; Y10T70/7915; Y10T70/7921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
227 words
A padlock construction comprising a cylindrical barrel having a principal axis, a longitudinally extending bore commencing at one end of said barrel, and a counter bore communicating with said bore at an inner end thereof; said barrel having a pair of transverse bores communicating with said counter bore; a shackle movable within said transverse bores between opened and closed positions, and selectively completely removable from said transverse bores, a locking bar rotably positioned within said counter bore and cooperating with said shackle to selectively immobilize the same, a lock body positioned within said first mentioned bore and cooperating with said locking bar, said lock body being accessible for the engagement of a key at one end of said barrel, said barrel having at least one elongated longitudinally extending bore therin communicating at an opposite end of said barrel and terminating at an inner counter bore of smaller diameter communicating with said first mentioned bore, said lock body having at least one threaded bore therein aligned with said inner counter bore, said elongated bore intersecting at least one of said transverse bores in said barrels; said lock body being maintained within said barrel by threaded engagement with a screw inserted into said elongated bore, whereby subsequent insertion of said shackle into said barrel prevents access to said screw and unauthorized removal of said lock body from said barrel.
Claim 2
Dependent Claim
227 words
A padlock construction comprising a cylindrical barrel having a principal axis, a longitudinally extending bore commencing at one end of said barrel, and a counter bore communicating with said bore at an inner end thereof; said barrel having a pair of transverse bores communicating with said counter bore; a shackle movable within said transverse bores between opened and closed positions, and selectively completely removable from said transverse bores, a locking bar rotably positioned within said counter bore and cooperating with said shackle to selectively immobilize the same, a lock body positioned within said first mentioned bore and cooperating with said locking bar, said lock body being accessible for the engagement of a key at one end of said barrel, said barrel having at least one elongated longitudinally extending bore therin communicating at an opposite end of said barrel and terminating at an inner counter bore of smaller diameter communicating with said first mentioned bore, said lock body having at least one threaded bore therein aligned with said inner counter bore, said elongated bore intersecting at least one of said transverse bores in said barrels; said lock body being maintained within said barrel by threaded engagement with a screw inserted into said elongated bore, whereby subsequent insertion of said shackle into said barrel prevents access to said screw and unauthorized removal of said lock body from said barrel.
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 |