US3668906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock for windows and doors
Assignee: Individual
•
Filing: 1971-01-25
•
Granted: 1972-06-13
•
Expires: 1991-01-25
Abstract
Abstract A device for securing a pair of slideable window or door sashes in a fixed frame having first and second locking plungers longitudinally displaceable in a housing mounted on a first of said sashes so that said plungers are respectively displaceable into and out of securing relation with said frame and the second of said sashes. The first locking plunger is provided with a keyhole-shaped slot therethrough, while the second locking plunger is positioned to extend through said slot and dimensioned for receipt within the wider portion of said slot but not in the narrow portion thereof at a first locked orientation at which the first locking plunger is retained in securing relation with the frame. Further, the second locking plunger is dimensioned for receipt within the narrower portion of the slot at an opened orientation of said plunger. Lock means is provided for releaseably securing the second locking plunger in said locked orientation.
Inventors
- 👤 David Josephart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:57
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/14; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0834; Y10T292/0836; Y10T292/0846; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5146; Y10T70/515; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7576
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
221 words
A device for securing a window or door having at least first and second sashes slideable in a fixed frame, comprising a housing mountable on said first sash adjacent said frame; first and second locking plungers mounted in said housing for longitudinal displacement so that one end of each of said first and second locking plungers may move into and out of securing relation with one of said frame and second sash to prevent movement of said sashes relative to said frame and each other, said first locking plunger being formed with a slot therethrough having a first, longitudinally extending portion of a first width and a second portion of a second width greater than said first width and positioned on the side of said first portion spaced from said first locking plunger end, said second locking plunger being positioned to extend through said slot and being dimensioned for receipt within said second slot portion but not in said first slot portion at a first locked orientation at which said first locking plunger is retained in securing relation with said frame or sash, and dimensioned for receipt within said first portion of said slot at an opened orientation at which said first locking plunger is longitudinally displaceable; and lock means for releasably securing said second locking plunger in said locked orientation.
Claim 2
Independent Claim
221 words
A device for securing a window or door having at least first and second sashes slideable in a fixed frame, comprising a housing mountable on said first sash adjacent said frame; first and second locking plungers mounted in said housing for longitudinal displacement so that one end of each of said first and second locking plungers may move into and out of securing relation with one of said frame and second sash to prevent movement of said sashes relative to said frame and each other, said first locking plunger being formed with a slot therethrough having a first, longitudinally extending portion of a first width and a second portion of a second width greater than said first width and positioned on the side of said first portion spaced from said first locking plunger end, said second locking plunger being positioned to extend through said slot and being dimensioned for receipt within said second slot portion but not in said first slot portion at a first locked orientation at which said first locking plunger is retained in securing relation with said frame or sash, and dimensioned for receipt within said first portion of said slot at an opened orientation at which said first locking plunger is longitudinally displaceable; and lock means for releasably securing said second locking plunger in said locked orientation.
Claim 3
Dependent Claim
28 words
A securing device as recited in claim 1, wherein said second locking plunger is rotatably mounted in said housing for rotatable displacement between said locked and opened orientations.
Claim 4
Dependent Claim
88 words
A securing device as recited in claim 2, wherein at least a portion of the region of said second locking plunger dimensioned for receipt within said slot has a substantially flattened cross-section, said second locking plunger being rotatably displaceable between said opened orientation in which said region of flattened cross-section is aligned with the first slot portion for receipt therein, and said locked orientation at which said region of flattened cross-section is out of alignment with said first portion of said slot and received within second slot portion.
Claim 5
Dependent Claim
117 words
A securing device as recited in claim 1, wherein said locking means includes cylinder means mounted for longitudinal displacement in said housing between opened and locked positions; key-operated barrel means rotatably mounted in said cylinder means; tumbler means mounted in said cylinder means and said barrel means for the selective locking of said barrel meAns relative to said cylinder means; means for biasing said cylinder means in said open position; and means for releasably retaining said cylinder means in said locked position, said retaining means being operatively coupled to said barrel means for release in response to the rotation thereof, said second locking plunger being coupled to said locking means for longitudinally displacement with said cylinder means.
Claim 6
Dependent Claim
30 words
A securing device as recited in claim 4, wherein said second locking plunger is secured to said barrel means for rotatable displacement therewith about the axis of its longitudinal displacement.
Claim 7
Dependent Claim
110 words
A securing device as recited in claim 5, wherein said second locking plunger has a first portion dimensioned for receipt only in said second slot portion and a second portion of a flattened cross-section dimensioned for receipt within said first slot other portion when aligned therewith and said second slot portion, said second locking plunger being rotatably and longitudinally displaceable in response to the operation of said locking means to position said second locking plunger first portion in said slot when said second locking plunger is in said locked orientation, and to position the second portion thereof in said slot when said second locking plunger is in said opened orientation.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |