US3742800A — Constant flexure stress energy storing beam

Claim 1

Independent Claim 166 words

An improved impact output device of the type having an end mass, an impact key attached to the end mass positioned to perform an impact function relative to a parent structure, at least two flexural energy storing members attached at one end to the end mass and cantileverly attached at the other end to said parent structure, and means for deflecting, holding and releasing said energy storing members to cause said impact key to perform said impact function, wherein: said energy storing members are disposed in parallel facing relationship and each said flexural energy storing member is a slender beam having an optimized contour profile of varying thickness matched to the energy input to the beam and having a minimum thickness at a point 1/3 the length of the beam from the end mass attaching end to the parent structure attaching end whereby the maximum principal stress at all points along the beam is the same when said deflecting means is operative to flex said beam.

Claim 2

Dependent Claim 166 words

An improved impact output device of the type having an end mass, an impact key attached to the end mass positioned to perform an impact function relative to a parent structure, at least two flexural energy storing members attached at one end to the end mass and cantileverly attached at the other end to said parent structure, and means for deflecting, holding and releasing said energy storing members to cause said impact key to perform said impact function, wherein: said energy storing members are disposed in parallel facing relationship and each said flexural energy storing member is a slender beam having an optimized contour profile of varying thickness matched to the energy input to the beam and having a minimum thickness at a point 1/3 the length of the beam from the end mass attaching end to the parent structure attaching end whereby the maximum principal stress at all points along the beam is the same when said deflecting means is operative to flex said beam.

Claim 3

Dependent Claim 23 words

The impact output device of claim 1 including: stress relieving fillets at points of stress concentration on each said flexural energy storing member.

Claim 4

Dependent Claim 24 words

The impact output device of claim 2 wherein the means for deflecting the flexural energy storing members include: means for electromagnetically deflecting said beams.

Claim 5

Dependent Claim 147 words

An improved impact output device for use with computers and data processors including: an end mass; an impact element attached to the end mass in a position to perform an impact function; at least two flexural energy storing members attached at one end to the end mass and at the other end to a parent structure, each said member having a contour profile according to the equations: to (x)/to (1) (3 x - 1/2) 1/2 in the region 1/3 + Delta < or = x < or = 1 to (x)/to (1) (1 - 3 x/2) 1/2 in the region of 0 < or = x < or = 1/3 - Delta to (x)/to (1) (3 Delta /2 ) 1/2 in the region 1/3 - Delta < or = x < or = 1/3 + Delta and means for deflecting, holding and releasing said energy storing members.

Claim 6

Dependent Claim 147 words

An improved impact output device for use with computers and data processors including: an end mass; an impact element attached to the end mass in a position to perform an impact function; at least two flexural energy storing members attached at one end to the end mass and at the other end to a parent structure, each said member having a contour profile according to the equations: to (x)/to (1) (3 x - 1/2) 1/2 in the region 1/3 + Delta < or = x < or = 1 to (x)/to (1) (1 - 3 x/2) 1/2 in the region of 0 < or = x < or = 1/3 - Delta to (x)/to (1) (3 Delta /2 ) 1/2 in the region 1/3 - Delta < or = x < or = 1/3 + Delta and means for deflecting, holding and releasing said energy storing members.

Claim 7

Dependent Claim 23 words

The impact output device of claim 4 including: stress relieving fillets at points of stress concentration on each said flexural energy storing member.

Claim 8

Dependent Claim 118 words

A flexural energy storing member including: a slender beam for cantileverly attaching one end to a parent structure and for attaching the other end to an end mass, said beam having a contour profile of varying thickness optimized according to an energy input acting on a flexure bundle comprised of at least two of said members, said energy input in the form of a transverse load having a centroid acting in line with a point 1/3 the length of the beam from the end mass attaching end to the parent structure attaching end, said beam having a minimum thickness at said point 1/3 the length of the beam whereby the maximum principal stress along the beam is constant.

Claim 9

Dependent Claim 118 words

A flexural energy storing member including: a slender beam for cantileverly attaching one end to a parent structure and for attaching the other end to an end mass, said beam having a contour profile of varying thickness optimized according to an energy input acting on a flexure bundle comprised of at least two of said members, said energy input in the form of a transverse load having a centroid acting in line with a point 1/3 the length of the beam from the end mass attaching end to the parent structure attaching end, said beam having a minimum thickness at said point 1/3 the length of the beam whereby the maximum principal stress along the beam is constant.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-07-02	1977-01-01	1977-07-03	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-07-02	1981-01-01	1981-07-03	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-07-02	1985-01-01	1985-07-03	$7700.00	Window Closed / Lapsed

Constant flexure stress energy storing beam

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