Patent US5028919A successfully refreshed from Google Patents.
Patent US3882699A successfully refreshed from Google Patents.
US3882699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attack-resistant padlock
Assignee: Stanley Security Solutions Inc
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Filing: 1973-07-23
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Granted: 1975-05-13
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Expires: 1993-07-23
Abstract
Abstract An attack-resistant padlock has a shackle of maraged steel, deadlocked in locked position by a pair of oppositely-moving bolts positively driven by a rotary throw member having specially-shaped driving lugs, which have long arcuate external faces tangent to transverse faces on the bolts to positively deadlock the bolts in locking position. The throw member is mounted in a retaining plate secured by engagement in a notch in the casing and by a shackle retaining plug which may be pinned in place, and is further supported by a filler block which reinforces the throw member legs and is held in place by the keyremovable lock core. The lock core is desirably secured not only by its normal key-actuated lug, but additionally by a keeper plate mounted in the bottom of a downward extension of the shackle-toe receiving bore. The invention is applicable both to shrouded and unshrounded padlocks.
Inventors
- 👤 Max L Flack
- 👤 William R Foshee
- 👤 Tourneau Ralph E Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:48
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/38; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/459; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7638; Y10T70/7644
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
209 words
A padlock, comprising a case having two parallel holes for reception of the spaced legs of a shackle, and a transverse bolt slideway extending between and intersecting said holes, a shackle receivable in said holes and having bolt-receiving notches in its legs, a pair of L-shaped bolts longitudinally slidable in said slideway between projected anD retracted positions, said bolts having head ends which in said projected position extend into said shackle notches to secure the shackle against retraction from the case, said bolts having inward projecting legs lying on opposite sides of an interface plane in passing side-by-side relationship, the legs having transverse slots therein for engagement by a throw member, a throw member rotatably mounted in said case on an axis substantially in said interface plane and having eccentric drive lugs thereon engaged in said bolt slots, said lugs each having an external surface on an arc about the center of rotation of the throw member and being movable substantially to a position intersecting said interface plane, the bolt slots having outer side faces substantially normal to said interface plane and tangent to said external lug surfaces when the throw member and bolts are in bolt projected position so as substantially to deadlock said bolts against forced retraction.
Claim 2
Dependent Claim
209 words
A padlock, comprising a case having two parallel holes for reception of the spaced legs of a shackle, and a transverse bolt slideway extending between and intersecting said holes, a shackle receivable in said holes and having bolt-receiving notches in its legs, a pair of L-shaped bolts longitudinally slidable in said slideway between projected anD retracted positions, said bolts having head ends which in said projected position extend into said shackle notches to secure the shackle against retraction from the case, said bolts having inward projecting legs lying on opposite sides of an interface plane in passing side-by-side relationship, the legs having transverse slots therein for engagement by a throw member, a throw member rotatably mounted in said case on an axis substantially in said interface plane and having eccentric drive lugs thereon engaged in said bolt slots, said lugs each having an external surface on an arc about the center of rotation of the throw member and being movable substantially to a position intersecting said interface plane, the bolt slots having outer side faces substantially normal to said interface plane and tangent to said external lug surfaces when the throw member and bolts are in bolt projected position so as substantially to deadlock said bolts against forced retraction.
Claim 3
Dependent Claim
54 words
A padlock as in claim 1 in which said drive lugs are defined at their circumferentially opposite ends by faces on arcs of a common circle intersected by the arc of said external surface and said transverse bolt grooves have a width substantially equal, with operating clearance, to the diameter of said common circle.
Claim 4
Dependent Claim
74 words
A padlock as in claim 1 in which each arcuate external surface has a considerable arcuate length and the drive lug has a normal locking position in which its arcuate external surface extends considerable distances in both directions from its point of tangentency with the outer side face of the slot, so as to provide a range of positions of the drive lug from said normal positions in which said deadlocking action is obtained.
Claim 5
Dependent Claim
74 words
A padlock as in claim 1 in which said bolts are mounted between an inner end face of a cavity in the case and a retainer plate mounted in said cavity, with the addition of a lock core mounted in said cavity, said throw member having a leg structure connecting the same with the lock core, and a filler block about said leg structure for supporting the bolt retainer plate from the lock core.
Claim 6
Dependent Claim
49 words
A padlock as in claim 4 in which the throw member leg structure comprises a pair of spaced parallel legs, and said filler block is a solid block having holes therein in which the legs are closely received to reinforce said legs from twisting out of their common plane.
Claim 7
Dependent Claim
60 words
A padlock as in claim 4 in which said lock core is mounted in a cavity from the opposite end of the case from the shackle-receiving holes, which cavity overlaps one shackle-receiving hole, and a keeper plate mounted in said one shackle-receiving hole and engaged with the lock core to secure the same in position for supporting said filler block.
Claim 8
Dependent Claim
20 words
A padlock as in claim 4 in which said shackle is of maraged steel having high toughness at cryogenic temperatures.
Claim 9
Dependent Claim
56 words
A padlock as in claim 1 in which said bolts are mounted in place by a retainer plate having one end fixed in said case, and which includes a shackle-retaining plug supporting the other end of the retainer plate and blocking its disengagement from the case, and a pin fixing the shackle-retaining plug in the case.
Claim 10
Dependent Claim
56 words
A padlock as in claim 6 in which said bolts are mounted in place by a retainer plate having one end fixed in said case, and which includes a shackle-retaining plug supporting the other end of the retainer plate and blocking its disengagement from the case, and a pin fixing the shackle-retaining plug in the case.
Claim 11
Dependent Claim
121 words
A padlock comprising a case and a shackle having its legs received therein and at least one bolt longitudinally movable into locking engagement in a notch in the shackle, a transverse groove in the bolt and having an outer side face, a throw member rotatably mounted in the case and having an eccentric drive lug disposed in said groove and arcuately movable in the plane of the groove to advance and retract the bolt, said drive lug having an external surface on an arc about thE center of rotation of the throw member and movable to a position in which it is engaged by said normal outer side face of the bolt groove so as to deadlock the bolt against retraction.
Claim 12
Dependent Claim
121 words
A padlock comprising a case and a shackle having its legs received therein and at least one bolt longitudinally movable into locking engagement in a notch in the shackle, a transverse groove in the bolt and having an outer side face, a throw member rotatably mounted in the case and having an eccentric drive lug disposed in said groove and arcuately movable in the plane of the groove to advance and retract the bolt, said drive lug having an external surface on an arc about thE center of rotation of the throw member and movable to a position in which it is engaged by said normal outer side face of the bolt groove so as to deadlock the bolt against retraction.
Claim 13
Dependent Claim
38 words
A padlock as in claim 10 in which said drive-lug external surface extends along said arc over a considerable length so as to deadlock the bolt in any of a range of angular positions of the throw member.
Claim 14
Dependent Claim
36 words
A padlock as in claim 10 in which said outer side face of the bolt is normal to the direction of bolt movement and engages the external surface of the drive lug in a tangential relation.
Claim 15
Dependent Claim
62 words
A padlock as in claim 12 in which said lug extends circumferentially of said throw member a considerable distance and is defined at its circumferentially opposite ends by faces on arcs of a common circle intersected by the arc of said external surface, said transverse bolt groove having a width substantially equal, with operating clearance, to the diameter of said common circle.
Claim 16
Dependent Claim
179 words
A heavy-duty padlock comprising a case and a shackle with its ends received in blind holes in the case, a lock core cavity in the opposite end of the case, a pair of bolts slidable into engagement with the shackle legs and mounted between the end wall of said cavity and a retainer plate, a rotatable throw member mounted in the retainer plate, a rotatable throw member mounted in the retainer plate and having elongated leg structure extending axially for interconnecting the throw member with a lock core, a lock core fixed in the cavity and spaced from the retainer plate, said lock core having a key plug in operating engagement with the end of said leg structure but leaving an intermediate length thereof exposed in the space between the core and the retainer plate, and a filler block surrounding the leg structure and extending in twist-resisting relation therewith over substantially the full distance between the lock core and the retainer plate so as to support the plate from the lock core and support the leg structure against twisting.
Claim 17
Dependent Claim
179 words
A heavy-duty padlock comprising a case and a shackle with its ends received in blind holes in the case, a lock core cavity in the opposite end of the case, a pair of bolts slidable into engagement with the shackle legs and mounted between the end wall of said cavity and a retainer plate, a rotatable throw member mounted in the retainer plate, a rotatable throw member mounted in the retainer plate and having elongated leg structure extending axially for interconnecting the throw member with a lock core, a lock core fixed in the cavity and spaced from the retainer plate, said lock core having a key plug in operating engagement with the end of said leg structure but leaving an intermediate length thereof exposed in the space between the core and the retainer plate, and a filler block surrounding the leg structure and extending in twist-resisting relation therewith over substantially the full distance between the lock core and the retainer plate so as to support the plate from the lock core and support the leg structure against twisting.
Claim 18
Dependent Claim
199 words
A padlock, comprising a case having two parallel holes for reception of the spaced legs of a shackle, and a transverse bolt slideway extending between and intersecting said holes, a shackle receivable in said holes and having bolt-receiving notches in its legs, a pair of bolts longitudinally slidable in said slideway between projected and retracted positions, said bolts having head ends which in said projected position extend into said shackle notches to secure the shackle against retraction from the case, said bolts having inward projecting legs lying on opposite sides of an interface plane in passing side-by-side relationship, the legs having transverse slots therein for engagement by a throw member, a throw member rotatably mounted in said case on an axis substantially in said interface plane and having eccentric drive lugs thereon engaged in said transverse slots, said lugs being movable to advance the bolts and having locked positions in which each lug extends across said interface plane, each lug in such positions having a portion on one side of the plane in retraction-blocking relation with one of said bolts and a portion on the opposite side of the plane in position to block retraction of the other bolt.
Claim 19
Dependent Claim
199 words
A padlock, comprising a case having two parallel holes for reception of the spaced legs of a shackle, and a transverse bolt slideway extending between and intersecting said holes, a shackle receivable in said holes and having bolt-receiving notches in its legs, a pair of bolts longitudinally slidable in said slideway between projected and retracted positions, said bolts having head ends which in said projected position extend into said shackle notches to secure the shackle against retraction from the case, said bolts having inward projecting legs lying on opposite sides of an interface plane in passing side-by-side relationship, the legs having transverse slots therein for engagement by a throw member, a throw member rotatably mounted in said case on an axis substantially in said interface plane and having eccentric drive lugs thereon engaged in said transverse slots, said lugs being movable to advance the bolts and having locked positions in which each lug extends across said interface plane, each lug in such positions having a portion on one side of the plane in retraction-blocking relation with one of said bolts and a portion on the opposite side of the plane in position to block retraction of the other bolt.
References Cited (Backward Citations)
US1246472A
Cited
US3605458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |