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US 4,361,997 AGranted
Fastener plate and assembly
AssigneeTextron Inc.
InventorCharles J. DeCaro
Life of this patent
Estimating the term…
Abstract
A plastic plate is provided for use with a fastener to secure insulation to a metal roof deck. The plate has a planar portion having a centrally disposed tapered hub portion. The central opening and preferably a clear through hole extends in the plate in the area of the hub. The bottom of the plate includes anti-rotational means for engagement with the insulation during driving of the fastener. The anti-rotational means may be associated with the bottom of the planar portion, the hub or both. The fastener may include two separate and spaced apart threaded portions so that as the fastener first engages the metal deck, the unthreaded portion is within the previously tapped hub portion.
Claims15
A plastic plate suitable for use with a fastener to secure insulation to a metal roof deck, said plate comprising:
- A. a substantially planar portion having top and bottom surfaces;
- B. a hub portion for receiving said fastener in force-fit relationship and depending from said bottom surface of said planar portion in a central part thereof and shaped to penetrate into said insulation and permit surface contact with the insulation about said hub and bottom surface;
- C. an opening in at least the upper surface of said planar portion coaxial with the hub portion for aligning said fastener as it is being driven through said hub portion in force-fit relationship;
- and
- D. anti-rotational means depending from said bottom surface for engagement with said insulation during driving of said fastener.
2 more elements
A fastener and plate combination suitable for installing insulation on metal roof deck, said combination comprising:
- A. an elongated fastener having a driving head and a a tapered shank, the end of the shank opposite the head including a self-tapping threaded portion;
- B. a plastic plate having a substantially planar portion having top and bottom surfaces, a tapered hub portion depending from the bottom surface of said planar portion in a central part thereof and shaped to penetrate into said insulation and permit surface contact with the insulation about said hub and bottom surface;
- C. an anti-rotational means extending radially outwardly from said hub portion along said bottom surface;
- and
- D. said fastener being threaded through said plate and said hub portion until said self-tapping threaded portion engages said roof deck and said driving head is seated on the top surface of said plate to secure the insulation to the roof deck.
2 more elements
A fastener and plate combination suitable for installing insulation on metal roof deck, said combination comprising:
- A. an elongated fastener having a driving head and a shank, the shank having a self-tapping threaded portion, an adjacent unthreaded portion and a second threaded portion adjacent the driving head;
- B. a plastic plate having a substantially planar portion having top and bottom surfaces, a hub portion depending from the bottom surface of said planar portion in a central part thereof and shaped to penetrate into said insulation and permit surface contact with the insulation about said hub and bottom surface, an opening axially through said plate and hub and having an inside diameter substantially equal to a pitch diameter of said threads and anti-rotational means extending radially outwardly from said hub portion along said bottom surface;
- and
- C. said fastener dimensioned so that when it is threaded through said hub portion and said insulation and against said roof deck, the unthreaded portion is in said opening and when said fastener is threaded into said metal roof deck and the head is seated on the plate, said second threaded portion is threadably engaged in said hub.
1 more element
A fastener and plate combination suitable for installing insulation on metal roof deck, said combination comprising:
- A. an elongated fastener having a driving head and a shank, the shank having a self-tapping threaded portion, an adjacent unthreaded portion and a second threaded portion adjacent the driving head;
- B. a plastic plate having a substantially planar portion having top and bottom surfaces, a hub portion depending from the bottom surface of said planar portion in a central part thereof, an opening axially through said plate and hub and having an inside diameter substantially equal to a pitch diameter of said threads and tapered ribs extending radially outwardly from said hub portion along said bottom surface;
- and
- C. said fastener dimensioned so that when it is threaded through said hub portion and said insulation and against said roof deck, the unthreaded portion is in said opening and when said fastener is threaded into said metal roof deck and the head is seated on the plate, said second threaded portion is threadably engaged in said hub.
1 more element
A fastener and plate combination suitable for installing insulation on metal roof deck, said combination comprising:
- A. an elongated fastener having a driving head and a shank, the shank having a self-tapping threaded portion, an adjacent unthreaded portion and a second threaded portion adjacent the driving head;
- B. a plastic plate having a substantially planar portion having top and bottom surfaces, a hub portion depending from the bottom surface of said planar portion in a central part thereof, an opening axially through said plate and hub and having an inside diameter substantially equal to a pitch diameter of said threads and ribs extending radially outwardly from said hub porton along said bottom surface, said ribs tapered from a relatively large root section adjacent said hub portion to a relatively thin plated section remote from said hub portion;
- and
- C. said fastener dimensioned so that when it is threaded through said hub portion and said insulation and against said rood deck, the unthreaded portion is in said opening and when said fastener is threaded into said metal roof deck and the head is seated on the plate, said second threaded portion is threadably engaged in said hub.
1 more element
A fastener and plate combination suitable for installing insulation on metal roof deck, said combination comprising:
- A. an elongated fastener having a driving head and a a shank, the shank having a self-tapping threaded portion, an adjacent unthreaded portion and a second threaded portion adjacent the driving head;
- B. a plastic plate having a substantially planar portion having top and bottom surfaces, a hub portion depending from the bottom surface of said planar portion in a central part thereof, an opening axially through said plate and hub and having an inside diameter substantially equal to a pitch diameter of said threads and anti-rotational means extending radially outwardly from said hub portion along said bottom surface including ribs which extend along said hub portion;
- and
- C. said fastener dimensioned so that when it is threaded through said hub portion and said insulation and against said roof deck, the unthreaded portion is in said opening and when said fastener is threaded into said metal roof deck and the head is seated on the plate, said second threaded portion is threadably engaged in said hub.
1 more element
A fastener and plate combination suitable for installing insulation on metal roof deck, said combination comprising:
- A. an elongated fastener having a driving head and a shank, the shank having a self-tapping threaded portion, an adjacent unthreaded portion and a second threaded portion adjacent the driving head;
- B. a plastic plate having a substantially planar portion having top and bottom surfaces, a hub portion depending from the bottom surface of said planar portion in a central part thereof, an opening axially through said plate and hub and having an inside diameter substantially equal to a pitch diameter of said threads, anti-rotational means extending radially outwardly from said hub portion along said bottom surface and spaced apart tabs positioned along the plate periphery to be engaged by a setting tool to assist in preventing rotation of the plate;
- and
- C. said fastener dimensioned so that when it is threaded through said hub portion and said insulation and against said roof deck, the unthreaded portion is in said opening and when said fastener is threaded into said metal roof deck and the head is seated on the plate, said second threaded portion is threadably engaged in said hub.
1 more element
Dependencies are inferred from the claim text.