IP Library › Granted Patent US 12,297,076
Granted Patent B2
US 12,297,076 · App. 17/292,640 · Granted May 13, 2025

Modular stairwell and elevator shaft system and method

Inventors: Arlan Collins (Seattle, WA); Mark Woerman (Seattle, WA); Peter Damento (Seattle, WA)
Assignee: Innovative Building Technologies, LLC
B66B11/0005B66B7/023B66B19/00B66B19/002E04B1/24E04F11/02E04F11/18
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Quick Facts
Patent No.
US 12,297,076
App. No.
17/292,640
Granted
May 13, 2025
Kind
B2
Abstract

A prefabricated modular stairwell and elevator shaft system is described. The system can include an end panel, a first side panel, a second elevator shaft panel, a second side panel, and a first elevator shaft panel. The prefabricated modular stairwell and elevator shaft system can also include stairwell components (including one or more treads, one or more landings, and one or more handrails), one or more counterweight rails, one or more counterweight brackets, a stairwell door, and a stairwell door frame.

Claims (33)

1. A modular stairwell and elevator shaft system, comprising:

a first side panel having an elevator door and an elevator door frame, wherein the first side panel is operable to span vertically between a first pair of adjacent corbel beams, and wherein the first side panel includes stairwell and handrail support components;

a second side panel, parallel to the first side panel, and having a stairwell door and a stairwell door frame, wherein the second side panel is operable to span vertically between a second pair of adjacent corbel beams, and wherein the second side panel includes stairwell and handrail support components;

an end panel, orthogonal to the first and second side panels, and operable to span vertically between a third pair of adjacent corbel beams;

a first elevator shaft panel, parallel to the end panel, and including first elevator components;

a second elevator shaft panel, parallel to the first elevator shaft panel, and including second elevator components;

one or more stairwell treads configured to attach to the stairwell and handrail support components of at least one of the first side panel and the second side panel;

one or more stairwell handrails configured to attach to the stairwell and handrail support components of at least one of the first side panel and the second side panel; and

one or more stairwell landings configured to attach to the stairwell and handrail support components of at least one of the first side panel and the second side panel.

2. The modular stairwell and elevator shaft system of claim 1 , wherein the first side panel, the second side panel, and the end panel are a first height, and wherein the first elevator shaft panel and the second elevator shaft panel are each a second height that is greater than the first height.

3. The modular stairwell and elevator shaft system of claim 2 , wherein the first height spans a portion of one story and the second height spans a portion of two stories.

4. The modular stairwell and elevator shaft system of claim 1 ,

wherein the stairwell and handrail support components are installed on the first side panel, the second side panel, and the end panel in a factory off-site from a building construction site.

5. The modular stairwell and elevator shaft system of claim 1 , wherein the first elevator shaft panel and the second elevator shaft panel are operable to attach to respective corbel beam clips attached to corresponding corbel beams, and wherein the first elevator shaft panel and the second elevator shaft panel each include multiple light gauge members installed together to form one or more vertical framing members and one or more horizontal framing members.

6. The modular stairwell and elevator shaft system of claim 1 , wherein the elevator door frame and the elevator door are installed in the first side panel in a factory off-site from a building construction site.

7. The modular stairwell and elevator shaft system of claim 1 , wherein the stairwell door frame and the stairwell door are installed in the second side panel in a factory off-site from a building construction site.

8. The modular stairwell and elevator shaft system of claim 1 , wherein the one or more stairwell treads, the one or more stairwell handrails, and the one or more stairwell landings are installed at a building construction site.

9. The modular stairwell and elevator shaft system of claim 1 , wherein the first elevator components include one or more counterweight rails, one or more counterweight brackets, and one or more elevator rail brackets.

10. The modular stairwell and elevator shaft system of claim 1 , wherein the second elevator components include one or more elevator rail brackets.

11. The modular stairwell and elevator shaft system of claim 1 , further comprising:

one or more elevator rails, wherein the one or more elevator rails are installed, at a building construction site, on respective elevator rail brackets that were installed on the first elevator shaft panel and the second elevator shaft panel in a factory off-site from the building construction site.

12. A method to install a modular stairwell and elevator shaft system, the method comprising:

installing, in a building, a first side panel to span vertically between a first pair of adjacent corbel beams, wherein the first side panel includes an elevator door, an elevator door frame, and stairwell and handrail support components;

installing, in the building, a second side panel, parallel to the first side panel, and configured to span vertically between a second pair of adjacent corbel beams, wherein the second side panel includes a stairwell door frame, a stairwell door, and stairwell and handrail support components;

installing, in the building, an end panel, orthogonal to the first and second side panels, and configured to span vertically between a third pair of adjacent corbel beams;

installing, in the building, a first elevator shaft panel, parallel to the end panel, and having first elevator components that were attached to the first elevator shaft panel prior to the first elevator shaft panel being installed in the building, wherein the first elevator shaft panel is attached to one or more corbel beams via corresponding corbel beam clips;

installing, in the building, a second elevator shaft panel, parallel to the first elevator shaft panel, and having second elevator components that were attached to the second elevator shaft panel prior to the second elevator shaft panel being installed in the building, wherein the second elevator shaft panel is attached to one or more corbel beams via corresponding corbel beam clips;

attaching one or more stairwell treads to the stairwell and handrail support components of at least one of the first side panel and the second side panel;

attaching one or more stairwell handrails to the stairwell and handrail support components of at least one of the first side panel and the second side panel; and

attaching one or more stairwell landings to the stairwell and handrail support components of at least one of the first side panel and the second side panel.

13. The method of claim 12 , further comprising:

installing, in the building, one or more elevator rails on respective elevator rail brackets on the first elevator shaft panel and the second elevator shaft panel.

14. The method of claim 12 , wherein the first elevator components include one or more counterweight rails, one or more counterweight brackets, and one or more elevator rail brackets, and wherein the second elevator components include one or more elevator rail brackets.

Assignments (3)
SECURITY INTEREST Recorded Nov 4, 2025
From: INNOVATIVE BUILDING TECHNOLOGIES, LLC
To: VENTURE LENDING & LEASING VIII, LLC; VENTURE LENDING & LEASING IX, INC.
Reel/Frame 072776/0205 →
SECURITY INTEREST Recorded Sep 7, 2022
From: SUSTAINABLE LIVING PARTNERS, LLC; INNOVATIVE BUILDING TECHNOLOGIES, LLC
To: HUNT SLP II, LLC
Reel/Frame 061009/0512 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2021
From: DAMENTO, PETER; COLLINS, ARLAN; WOERMAN, MARK
To: INNOVATIVE BUILDING TECHNOLOGIES, LLC
Reel/Frame 056190/0001 →
Continuity (2)
Provisional Application 62767339 · Nov 14, 2018
Related Publication 20210395042A1 · Dec 23, 2021
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