US4078633A — Modular staging with platform jacks

Claim 1

Independent Claim 309 words

A portable staging for the support of platform-forming planks adjacent the side of a building, said staging comprising two vertical assemblies, each assembly including a ground engaging foot, a lower section connected to said foot, and at least one upper section, said upper section detachably connected to said lower section, each section provided with a series of rack teeth extending lengthwise thereof, the series of teeth of the sections of each assembly aligned with one series a continuation of the other, platform units, one for each assembly and attached thereto for movement vertically along its sections, each unit including a vertical portion of substantial length and a right-angular, plank supporting portion at the lower end thereof disposed towards the building, said teeth disposed in the opposite direction, said vertical portion slidably connected to a section with said teeth exposed, said vertical portion including structure extending beyond said section in said opposite direction, and means adjacent the upper end of said vertical portion includes a pinion in mesh with said teeth, a transverse shaft and a crank at least at one end thereof supported by said structure, and operable by a workman on the platform to effect said vertical movement, brace means attachable to the building, each brace means including a collar detachably assembled about a section of each assembly, and a railing above said units including collars each detachably assembled about a corresponding section of a respective one of said assemblies, means to lock said pinion against turning including a lever pivotally connected to the channel and provided at one end with at least one locking tooth disposed for entry between pinion teeth when the lever is in a predetermined position, and coacting cam means operable to detachably connect the other end of the lever to the unit against movement when the locking tooth is in its locking position.

Claim 2

Dependent Claim 309 words

A portable staging for the support of platform-forming planks adjacent the side of a building, said staging comprising two vertical assemblies, each assembly including a ground engaging foot, a lower section connected to said foot, and at least one upper section, said upper section detachably connected to said lower section, each section provided with a series of rack teeth extending lengthwise thereof, the series of teeth of the sections of each assembly aligned with one series a continuation of the other, platform units, one for each assembly and attached thereto for movement vertically along its sections, each unit including a vertical portion of substantial length and a right-angular, plank supporting portion at the lower end thereof disposed towards the building, said teeth disposed in the opposite direction, said vertical portion slidably connected to a section with said teeth exposed, said vertical portion including structure extending beyond said section in said opposite direction, and means adjacent the upper end of said vertical portion includes a pinion in mesh with said teeth, a transverse shaft and a crank at least at one end thereof supported by said structure, and operable by a workman on the platform to effect said vertical movement, brace means attachable to the building, each brace means including a collar detachably assembled about a section of each assembly, and a railing above said units including collars each detachably assembled about a corresponding section of a respective one of said assemblies, means to lock said pinion against turning including a lever pivotally connected to the channel and provided at one end with at least one locking tooth disposed for entry between pinion teeth when the lever is in a predetermined position, and coacting cam means operable to detachably connect the other end of the lever to the unit against movement when the locking tooth is in its locking position.

Claim 3

Dependent Claim 153 words

A portable staging comprising first and second assemblies, said second assemblies including a series of sections detachably interconnected in an end-to-end relationship, said first assemblies extending vertically substantially to the eaves of the building, said second sections extending upwardly along the roof angularly relative to said vertical section and above the roof with at least one section of each assembly parallel to the roof, said section including plank supporting brackets and supports in contact with the roof, and means connecting said vertical and roof-supporting assemblies and adjustable as required by the pitch of the roof and the spacing of said second sections relative thereto to effect the relationship of said first sections relative to the roof, each connecting means including an arm attached at an angle to the uppermost vertical section, and an intermediate linking section, transverse pivot means interconnecting said linking section to said arm and to said one roof support section.

Claim 4

Dependent Claim 153 words

A portable staging comprising first and second assemblies, said second assemblies including a series of sections detachably interconnected in an end-to-end relationship, said first assemblies extending vertically substantially to the eaves of the building, said second sections extending upwardly along the roof angularly relative to said vertical section and above the roof with at least one section of each assembly parallel to the roof, said section including plank supporting brackets and supports in contact with the roof, and means connecting said vertical and roof-supporting assemblies and adjustable as required by the pitch of the roof and the spacing of said second sections relative thereto to effect the relationship of said first sections relative to the roof, each connecting means including an arm attached at an angle to the uppermost vertical section, and an intermediate linking section, transverse pivot means interconnecting said linking section to said arm and to said one roof support section.

Claim 5

Dependent Claim 66 words

The portable staging of claim 2 in which each support of said one section includes a leg and a pivotable base, and each bracket includes a pivot connecting the front end thereof to said section and means connecting the rear section thereof to said section and enabling the angular relation of the bracket to be varied, said leg also conneted to said section by said pivot.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1981-03-13	1981-09-12	1982-03-14	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1985-03-13	1985-09-12	1986-03-14	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1989-03-13	1989-09-12	1990-03-14	$7700.00	Window Closed / Lapsed

Modular staging with platform jacks

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