Patent US4770450A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4770450A Expired / Lapsed US ⏱️ 0.0 years remaining

Door guard device for a mobile home

Assignee: Individual
•
Filing: 1987-04-10
•
Granted: 1988-09-13
•
Expires: 2007-04-10
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A door guard device (A) for interlocking a door (10) surrounded by a door frame having a doorjamb (16) and a front facing (14) is disclosed. The device includes a first arm (22) with legs (24, 26) which straddle a doorknob (20). A second arm (28) extends perpendicular to the door and is joined by a third arm (30) parallel to the door and engaging front facing (14) to prevent outward door opening. A brace (32) holds the device in place and allows for loose tolerancing of the device to allow for placement in a quick and easy manner and on a variety of door designs.

Inventors

  • 👤 Wilton Dacus

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 19:42
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/18; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/228

Claims Analysis

Total Claims: 18
Claim 1
Independent Claim 183 words
The combination of a door structure including a door which opens outwardly of an interior, a door frame surrounding said door having a side frame perpendicular to said door and a front facing parallel to said door carrying one side of said door secured to said door frame, a doorknob carried on said door adjacent a second opposing side of said door having a doorknob shank extending into the door, a door guard comprising: a first rod-like arm means having a pair of spaced depending leg means straddling said doorknob; a second rod-like arm means perpendicular to said first rod-like arm means and extending outwardly past said front facing engaging said side frame, a third rod-like arm means generally perpendicular to said second rod-like arm means and parallel to said front facing for engaging said front facing of said door frame, a first brace means extending vertically from said second rod-like arm means bracing against door side frame for holding said first, second, and third rod-like arm means in place between said door and door frame, to prevent opening of said door outwardly.
Claim 2
Dependent Claim 183 words
The combination of a door structure including a door which opens outwardly of an interior, a door frame surrounding said door having a side frame perpendicular to said door and a front facing parallel to said door carrying one side of said door secured to said door frame, a doorknob carried on said door adjacent a second opposing side of said door having a doorknob shank extending into the door, a door guard comprising: a first rod-like arm means having a pair of spaced depending leg means straddling said doorknob; a second rod-like arm means perpendicular to said first rod-like arm means and extending outwardly past said front facing engaging said side frame, a third rod-like arm means generally perpendicular to said second rod-like arm means and parallel to said front facing for engaging said front facing of said door frame, a first brace means extending vertically from said second rod-like arm means bracing against door side frame for holding said first, second, and third rod-like arm means in place between said door and door frame, to prevent opening of said door outwardly.
Claim 3
Dependent Claim 17 words
The door guard of claim 1 wherein said first, second, and third rod-like arm means are elongated.
Claim 4
Dependent Claim 42 words
The door guard of claim 1 including a second brace means extending vertically from said third leg means embracing said front facing of said door frame, while said second elongated rod-like arm means extends past said doorjamb, terminating adjacent said front facing.
Claim 5
Dependent Claim 20 words
The door guard of claim 1 wherein said first brace means extends vertically upwards from said second rod-like arm means.
Claim 6
Dependent Claim 32 words
The door guard of claim 1 including a coating of friction material surrounding said guard device to aid in frictionally retaining said device on said door and prevent marring of door surfaces.
Claim 7
Dependent Claim 83 words
The door guard of claim 1 wherein: said leg means comprising a first vertically depending leg and a second vertically depending leg spaced from said first depending leg; and the distance from said first depending leg to said second rod-like arm means being less than the distance from said doorknob shank to said doorjamb so that there is a loose tolerance in the fit of said door guard between said door and door frame facilitating quick placement and removal of said door guard.
Claim 8
Dependent Claim 66 words
The door guard of claim 6 wherein said second elongated arm has a length greater than the distance from said door to said front facing of said door frame so that there is a loose tolerance in the fit of said guard device to said door to fit a variety of door and door frame types while still serving as a locking device when in place.
Claim 9
Dependent Claim 211 words
A door guard for locking a door of a mobile home and the like which opens outwardly of an interior space, said door having a door frame surrounding said door, a side doorjamb perpendicular to said door, a doorknob carried by said door which doorknob has a doorknob shank extending into said door and a front facing parallel to said door, said device comprising: a first elongated rod-like arm means; spaced depending leg means integral with said first rod-like arm means for straddling said doorknob, said leg means having an opening less than the diameter of said doorknob to lock behind said doorknob; a second elongated rod-like arm means integral with said first elongated with said first elongated rod-like arm means and joined perpendicular thereto; a brace means extending vertically from said second elongated rod-like arm means for embracing said side said doorjamb while said second elongated rod-like arm means extends past said side doorjamb to said front facing of said frame to hold said device between said door and said frame; and a third elongated rod-like arm means joined perpendicular to said second elongated rod-like arm means for engaging said front facing of said wall means as said door is opened outwardly to prevent said door from being opened outwardly.
Claim 10
Dependent Claim 211 words
A door guard for locking a door of a mobile home and the like which opens outwardly of an interior space, said door having a door frame surrounding said door, a side doorjamb perpendicular to said door, a doorknob carried by said door which doorknob has a doorknob shank extending into said door and a front facing parallel to said door, said device comprising: a first elongated rod-like arm means; spaced depending leg means integral with said first rod-like arm means for straddling said doorknob, said leg means having an opening less than the diameter of said doorknob to lock behind said doorknob; a second elongated rod-like arm means integral with said first elongated with said first elongated rod-like arm means and joined perpendicular thereto; a brace means extending vertically from said second elongated rod-like arm means for embracing said side said doorjamb while said second elongated rod-like arm means extends past said side doorjamb to said front facing of said frame to hold said device between said door and said frame; and a third elongated rod-like arm means joined perpendicular to said second elongated rod-like arm means for engaging said front facing of said wall means as said door is opened outwardly to prevent said door from being opened outwardly.
Claim 11
Dependent Claim 32 words
The door guard of claim 8 including a coating of friction material surrounding said guard device to aid in frictionally retaining said device on said door and prevent marring of door surfaces.
Claim 12
Dependent Claim 37 words
The door guard of claim 8 including a second brace means extending vertically from said third leg means for assisting in the holding of said device in place and prevention of said door from being opened outwardly.
Claim 13
Dependent Claim 65 words
The door guard of claim 8 wherein: said first elongated rod-like arm means has a length from said leg means opening to said side doorjamb which is less than the distance from said doorknob shank to said side doorjamb to provide a loose fit and facilitate quick and easy change out for repeated in and out use and accommodate different door structure designs and dimensions.
Claim 14
Dependent Claim 233 words
The door guard of a door structure including a door which opens outwardly of a dwelling interior, a door frame surrounding said door having a doorjamb perpendicular to said door, and a front facing parallel to said door, said doorjamb terminating short of said front facing of said door frame, hinges carrying one side of said door secured to said door frame, a doorknob carried on said door adjacent a second opposing side of said door having a doorknob shank extending into said door, comprising: a first rod-like arm means having a pair of spaced depending legs straddling said doorknob shank being narrowly spaced for retention behind an outside diameter of said doorknob; a second rod-like arm means perpendicular to said first rod-like arm means abuting said side doorjamb of said side frame; third rod-like arm means integral with said second rod-like arm means extending generally parallel to said front facing for engaging said front facing to prevent outward movement of said door; brace means extending vertically from said second rod-like arm means bracing against said doorjamb while said second rod-like arm means extends past said doorjamb and terminates adjacent said front facing of said door frame for holding said second rod-like arm means in place; and a loose tolerance fit between said guard device and said door and door frame for quick placement and removal of said guard device while affording lockability.
Claim 15
Dependent Claim 233 words
The door guard of a door structure including a door which opens outwardly of a dwelling interior, a door frame surrounding said door having a doorjamb perpendicular to said door, and a front facing parallel to said door, said doorjamb terminating short of said front facing of said door frame, hinges carrying one side of said door secured to said door frame, a doorknob carried on said door adjacent a second opposing side of said door having a doorknob shank extending into said door, comprising: a first rod-like arm means having a pair of spaced depending legs straddling said doorknob shank being narrowly spaced for retention behind an outside diameter of said doorknob; a second rod-like arm means perpendicular to said first rod-like arm means abuting said side doorjamb of said side frame; third rod-like arm means integral with said second rod-like arm means extending generally parallel to said front facing for engaging said front facing to prevent outward movement of said door; brace means extending vertically from said second rod-like arm means bracing against said doorjamb while said second rod-like arm means extends past said doorjamb and terminates adjacent said front facing of said door frame for holding said second rod-like arm means in place; and a loose tolerance fit between said guard device and said door and door frame for quick placement and removal of said guard device while affording lockability.
Claim 16
Dependent Claim 44 words
The door guard of claim 12 wherein said loose tolerance fit is provided by dimensioning the distance between the depending leg closest to said doorjamb and said second rod-like arm means to be less than the distance from said doorknob shank to said doorjamb.
Claim 17
Dependent Claim 37 words
The door guard of claim 12 including a coating of friction material surrounding said guard device to assist in frictionally retaining said device in place on said doorknob and prevent marring of adjacent door and doorknob surfaces.
Claim 18
Dependent Claim 17 words
The door guard of claim 12 wherein said first, second, and third rod-like arm means are elongated.

References Cited (Backward Citations)

US1239802A Cited
US2151587A Cited
US4004833A Cited
US4334705A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-09-13 1992-03-14 1992-09-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-09-13 1996-03-14 1996-09-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-09-13 2000-03-14 2000-09-13 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag