Patent US4077167A successfully refreshed from Google Patents.
US4077167A
Expired / Lapsed
US
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Security window unit
Assignee: PENTAGON IND Ltd
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Filing: 1976-11-23
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Granted: 1978-03-07
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Expires: 1996-11-23
Abstract
Abstract This specification discloses a secure yet aesthetic window unit which has particular applicability to detention buildings such as prisons, jails, cell blocks, penitentiaries, asylums and similar building structures and which is, for all practical purposes, resistant to metal cutting devices. One of preferable embodiments of such a window unit comprises a first frame, a second frame having the same height and width dimensions as the first frame and being integral with the first frame, and glazing; said first frame and second frame each comprising two jambs, a sill, a head frame and at least one mullion dividing the window opening thus formed into horizontal sections of a width sufficient to prevent the passage therethrough of an adult person, being preferably not more than about 6 inches or preferably less than about 53/4 inches; said jambs, sill, head frame and each mullion being metal tubes; each mullion of the first frame being filled with concrete and each mullion of the second frame confining a rotatable steel bar therein.
Inventors
- 👤 Klaus Rieder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:29
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/01; E06B5/00; E06B5/10
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
138 words
A security window unit comprising: a first frame comprising a first pair of jambs, a first sill and a first head frame, said first pair of jambs, first sill and first head frame each including a rectangular steel channel filled with rigid insulation material, said first frame further comprising at least one first mullion dividing a window opening into sections and including a steel tube housing therein a rotatable bar; and a second frame comprising a pair of second jambs, a second sill and a second head frame, said second jamb, second sill and second head frame each including a steel channel filled with concrete, said second frame further comprising at least one second mullion dividing a window opening into sections having a width no greater than six inches and including a steel tube filled with hardened concrete.
Claim 2
Dependent Claim
138 words
A security window unit comprising: a first frame comprising a first pair of jambs, a first sill and a first head frame, said first pair of jambs, first sill and first head frame each including a rectangular steel channel filled with rigid insulation material, said first frame further comprising at least one first mullion dividing a window opening into sections and including a steel tube housing therein a rotatable bar; and a second frame comprising a pair of second jambs, a second sill and a second head frame, said second jamb, second sill and second head frame each including a steel channel filled with concrete, said second frame further comprising at least one second mullion dividing a window opening into sections having a width no greater than six inches and including a steel tube filled with hardened concrete.
Claim 3
Dependent Claim
20 words
The security window unit as claimed in claim 1 wherein said first mullion also contains a longitudinal concrete filled portion.
Claim 4
Dependent Claim
28 words
The security window unit as claimed in claim 1, wherein each mullion divides the window opening thus formed into sections, each not more than 53/4 inches in width.
Claim 5
Dependent Claim
22 words
The security window unit as claimed in claim 1, wherein each of said first and second frames contains more than one mullion.
Claim 6
Dependent Claim
28 words
The security window unit as claimed in claim 1, wherein each mullion of said second frame is reinforced with at least one steel reinforcing bar longitudinally extending therethrough.
Claim 7
Dependent Claim
16 words
The security window unit as claimed in claim 1, wherein the hardened concrete contains carbide chips.
Claim 8
Dependent Claim
15 words
the security window unit as claimed in claim 1, wherein the rigid-insulating material is fiberglass.
Claim 9
Dependent Claim
36 words
The security window unit as claimed in claim 1, wherein the rotatable steel bar is pivotally secured with the sill and extends through a concentric circular hole provided through the lower web of the head frame.
Claim 10
Dependent Claim
44 words
The security window unit as claimed in claim 8, wherein the rotatable steel bar extends, through a concentric circular hole provided through the upper web of the sill, to a channel seat which is placed between the upper and lower webs of said sill.
Claim 11
Dependent Claim
19 words
The security window unit as claimed in claim 8, wherein the concentric circular hole is provided with a bushing.
Claim 12
Dependent Claim
19 words
The security window unit as claimed in claim 9, wherein each concentric circular hole is provided with a bushing.
Claim 13
Dependent Claim
16 words
The security window unit as claimed in claim 10, wherein the bushing is made of nylon.
Claim 14
Dependent Claim
17 words
The security window unit as claimed in claim 1, wherein the bar is round-shaped in latitudinal cross-section.
Claim 15
Dependent Claim
18 words
The security window unit as claimed in claim 1, wherein each opening of the first frame is glazed.
Claim 16
Dependent Claim
28 words
The security window unit as claimed in claim 1, wherein each opening of the first frame is glazed with two sheets of plastic plates spaced from each other.
Claim 17
Dependent Claim
45 words
The security window unit as in claim 15, wherein the spaced two sheets of plastic plates are firmly installed with said first frame by means of sheet steel in a channel like shape which in turn is mounted to the first frame with countersunk devices.
Claim 18
Dependent Claim
41 words
The security window unit as in claim 15, wherein the spaced two sheets of plastic plates are firmly installed with said first frame by means of solid steel bars which in turn are mounted to said first frame with countersunk devices.
Claim 19
Dependent Claim
39 words
The security window unit as claimed in claim 1, said unit further comprises anchor pieces secured with the jambs of said unit and adapted for the use in installing the unit in the opening of concrete or masonry walls.
Claim 20
Dependent Claim
34 words
The security window unit as claimed in claim 1, wherein the rotatable steel bar is made of hardened tool steel and equipped with a stainless steel pin extending from the bottom of said bar.
Claim 21
Dependent Claim
34 words
The security window unit as claimed in claim 8 wherein the rotatable steel bar is made of hardened tool steel and equipped with a stainless steel pin extending from the bottom of said bar.
Claim 22
Dependent Claim
17 words
The security window unit as in claim 19, wherein said pin is placed on a channel seat.
Claim 23
Dependent Claim
40 words
The security window unit as claimed in claim 1, wherein the first frame and the second frame form respectively the outside frame and the inside frame of the window unit when installed in the opening of concrete or masonry walls.
Claim 24
Dependent Claim
40 words
The security window unit as claimed in claim 5, wherein the first frame and the second frame form respectively the outside frame and the inside frame of the window unit when installed in the opening of concrete or masonry walls.
Claim 25
Dependent Claim
40 words
The security window unit as claimed in claim 7, wherein the first frame and the second frame form respectively the outside frame and the inside frame of the window unit when installed in the opening of concrete or masonry walls.
Claim 26
Dependent Claim
40 words
The security window unit as claimed in claim 17, wherin the first frame and the second frame form respectively the outside frame and the inside frame of the window unit when installed in the opening of concrete or masonry walls.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |