| Class Number |
Class Name |
No. of Patents |
| 182/19 |
Automatic control |
73 |
| 182/137 |
Body catcher |
21 |
| 182/138 |
Sheet or net type |
80 |
| 182/140 |
Folding base |
5 |
| 182/139 |
Tensioned peripherally |
16 |
| 182/48 |
Chute or escape tower for personnel |
144 |
| 182/49 |
With ladder |
28 |
| 182/129 |
Combined |
469 |
| 182/20 |
Convertible |
88 |
| 182/35 |
Furniture |
24 |
| 182/21 |
Ladder |
17 |
| 182/34 |
Bed |
4 |
| 182/33 |
Chair or stool |
41 |
| 182/33.2 |
Bottom and legs invert to unveil ladder |
1 |
| 182/33.5 |
Step withdraws from beneath seat |
2 |
| 182/33.6 |
End-for-end turnout |
3 |
| 182/33.3 |
Steps on chair back |
4 |
| 182/33.4 |
Fixed steps |
0 |
| 182/22 |
Ladder of different type |
36 |
| 182/23 |
Stepladder prop pivoted to inverted position |
17 |
| 182/24 |
Stile and prop end abutting |
9 |
| 182/25 |
With spreader or tie |
5 |
| 182/26 |
Stepladder type with variable prop and ladder connection |
3 |
| 182/27 |
Scaffold |
19 |
| 182/28 |
Table |
7 |
| 182/29 |
Ironing board |
1 |
| 182/30 |
Board as pivoted ladder prop |
0 |
| 182/31 |
Crossed leg board support |
1 |
| 182/32 |
Wash stand |
0 |
| 182/53 |
Detachable window seat type |
4 |
| 182/56 |
Extensible platform |
1 |
| 182/57 |
Interior wall-engaging means |
7 |
| 182/58 |
Depending |
1 |
| 182/59 |
Saddle |
1 |
| 182/61 |
Exterior strut |
4 |
| 182/60 |
Wall-clamping means |
6 |
| 182/62 |
With outside strut or brace |
3 |
| 182/55 |
Platform below window |
9 |
| 182/54 |
With step or additional platform |
0 |
| 182/77 |
Door and ladder |
52 |
| 182/78 |
Door operates ladder |
17 |
| 182/81 |
Door and ladder on opposite sides of wall |
21 |
| 182/79 |
Guided rigid ladder |
3 |
| 182/80 |
Guide on wall or frame |
1 |
| 182/42 |
Endless conveyer escape |
19 |
| 182/43 |
Top and bottom support |
10 |
| 182/44 |
With pivoted or folding attached carrier |
5 |
| 182/63.1 |
Having transpositioning base and erecting means |
112 |
| 182/69.6 |
And platform elevatable relative to its support |
47 |
| 182/69.5 |
Erecting means actuated by lazy tong |
44 |
| 182/64.1 |
Ladder pivotably mounted on transpositioning base (e.g., on vehicle) |
2 |
| 182/65.1 |
About vertical axis |
5 |
| 182/66.1 |
Extension ladder (i.e., ladder having sliding section) |
7 |
| 182/67.1 |
Manually operated |
1 |
| 182/67.3 |
By use of gear |
0 |
| 182/67.2 |
By use of screw |
0 |
| 182/66.2 |
Motor operated |
7 |
| 182/67.4 |
Folding ladder |
0 |
| 182/67.5 |
Having screw rod for erecting ladder about horizontal pivot |
0 |
| 182/68.1 |
Extension ladder pivotally mounted to be erected about a horizontal axis |
15 |
| 182/68.3 |
Having gear means for erecting ladder |
0 |
| 182/69.1 |
Having lazy tong extending means |
10 |
| 182/69.3 |
And gear to actuate lazy tong |
0 |
| 182/69.2 |
And winch to actuate lazy tong |
1 |
| 182/68.2 |
Having winch means for erecting ladder |
0 |
| 182/69.4 |
Telescopic erecting means |
30 |
| 182/12 |
Horizontal traversing - actuation, control, or response |
23 |
| 182/17 |
Holding means |
57 |
| 182/13 |
Occupant actuation or control |
29 |
| 182/15 |
Holding means |
30 |
| 182/14 |
Occupant-controlled ascent or descent |
16 |
| 182/16 |
With handle or steering means |
32 |
| 182/10 |
Inclined cable supporting carrier traveling therealong |
26 |
| 182/11 |
Occupant-controlled |
5 |
| 182/151 |
Kit or separable parts |
68 |
| 182/115 |
Ladder and platform |
71 |
| 182/116 |
Platform with ladder as support |
137 |
| 182/117 |
Between spaced ladders |
26 |
| 182/118 |
Facing ladders |
52 |
| 182/119 |
Readily detachable platform |
81 |
| 182/120 |
Detachable step, single ladder |
35 |
| 182/121 |
Plural rung-engaging |
77 |
| 182/122 |
Stile-contacting |
24 |
| 182/124 |
Ladder with pivoted ladder prop and pivoted platform |
8 |
| 182/125 |
Platform positioned by ladder and prop divergence |
4 |
| 182/123 |
Plural platforms |
2 |
| 182/126 |
Prop-pivoted platform |
7 |
| 182/127 |
Ladder with land vehicle |
264 |
| 182/165 |
Ladder with pivoted prop |
49 |
| 182/171 |
Converging and contacting stiles or props |
3 |
| 182/168 |
Coplanar extension with prop pivoted to lower section |
5 |
| 182/173 |
Hinged to top-step rear flange |
11 |
| 182/172 |
Lateral prop |
55 |
| 182/177 |
Overlapping stile and prop |
0 |
| 182/174 |
Pivoted to top-step cleat |
3 |
| 182/175 |
With cleat spaced spreader or tie |
2 |
| 182/176 |
Multiple link folding spreader |
5 |
| 182/170 |
Rear prop, laterally moving |
7 |
| 182/166 |
Section extensible below prop pivot |
15 |
| 182/167 |
With step registration |
9 |
| 182/169 |
Single rear prop, pole type |
8 |
| 182/101 |
Ladder with vertically moving platform or escape |
4 |
| 182/102 |
Ladder supports platform |
16 |
| 182/103 |
Stile or prop-guided carriage |
35 |
| 182/194 |
Ladder |
76 |
| 182/207 |
Extension |
34 |
| 182/208 |
Mechanical or power-extending |
13 |
| 182/209 |
With latch |
15 |
| 182/210 |
Section movement actuated |
8 |
| 182/211 |
Spring-biased latch |
13 |
| 182/212 |
With remote control of latch |
5 |
| 182/213 |
Elevating cable actuated |
7 |
| 182/196 |
Flexible |
74 |
| 182/199 |
Plural spaced strand stile member |
9 |
| 182/197 |
With spacer |
11 |
| 182/198 |
Rung-attached |
25 |
| 182/220 |
Independent support for rung |
16 |
| 182/215 |
Rung sandwiched between elements of composite stile |
3 |
| 182/195 |
Slidable nested single rung units |
37 |
| 182/200 |
Supporting surface compensating means |
63 |
| 182/201 |
Stile extension |
39 |
| 182/202 |
Equalizing extensions |
15 |
| 182/204 |
Increment adjustment |
85 |
| 182/205 |
Ratchet type |
13 |
| 182/203 |
Rung-engaging means |
9 |
| 182/216 |
Tie rod assembled |
1 |
| 182/206 |
With hook or grab |
165 |
| 182/217 |
With reinforcing means |
9 |
| 182/218 |
Bow string type |
5 |
| 182/219 |
For side rail |
15 |
| 182/214 |
With spacer means |
156 |
| 182/221 |
Leg or shoe attachable pole climber |
37 |
| 182/2.1 |
Means maintaining platform level on angularly movable support |
42 |
| 182/2.2 |
Adjustable to plural operating positions |
17 |
| 182/2.3 |
Swingable support |
21 |
| 182/2.8 |
Foldable hinged support |
46 |
| 182/2.9 |
Hydraulically operated |
60 |
| 182/2.5 |
Ladder associated |
13 |
| 182/2.4 |
Of dielectric material |
15 |
| 182/2.7 |
Parallelogram linkage |
28 |
| 182/2.6 |
Providing access to underside of elevated surface |
14 |
| 182/2.11 |
Telescopic support |
80 |
| 182/1 |
Means maintaining step lever on horizontally pivoted ladder |
31 |
| 182/230 |
Miscellaneous |
90 |
| 182/241 |
Movable strand escape and means for retarding travel of strand |
14 |
| 182/45 |
Pitched roof conforming scaffold |
192 |
| 182/104 |
Pivotally connected ladders, mutually sustaining |
17 |
| 182/105 |
Central upright ladder section supported therebetween |
4 |
| 182/141 |
Platform with elevating or lowering means |
235 |
| 182/148 |
Operating means on platform |
84 |
| 182/142 |
Suspended |
195 |
| 182/147 |
Plural distinct elevating means |
6 |
| 182/145 |
Separate (i.e., nonwork) support for suspension means |
54 |
| 182/146 |
Platform holding detent coacts with support |
38 |
| 182/143 |
Simultaneously operable suspension means |
7 |
| 182/144 |
Platform continuously level |
15 |
| 182/149 |
Trestle-type support, beam-elevating |
3 |
| 182/222 |
Platform |
139 |
| 182/223 |
Relatively movable sections |
70 |
| 182/130 |
Plural platforms, common support |
26 |
| 182/131 |
Mounted for relative motion |
36 |
| 182/132 |
Stepped |
34 |
| 182/133 |
Pole or strand grasping-type climber |
73 |
| 182/136 |
Alternate grasping |
91 |
| 182/134 |
Foot- or leg-attachable |
65 |
| 182/135 |
With diverse holding means for occupant |
88 |
| 182/229 |
Putlog or spacer |
30 |
| 182/228.1 |
Rung or rung-to-stile connection |
85 |
| 182/228.3 |
Bracket-type connection |
12 |
| 182/228.6 |
Hollow rung |
28 |
| 182/228.5 |
Rung for a motor vehicle |
10 |
| 182/228.2 |
Rung having anti-skid surface |
36 |
| 182/228.4 |
Sleeve-type connection |
10 |
| 182/107 |
Safety device for ground-supported ladder |
222 |
| 182/108 |
Terminal foot or shoe |
50 |
| 182/109 |
Diverse ground-engaging means |
18 |
| 182/111 |
Pivotal component |
49 |
| 182/110 |
Suction cup |
1 |
| 182/112 |
Safety device, platform associated |
35 |
| 182/113 |
Railing |
220 |
| 182/187 |
Scaffold external of shaft |
403 |
| 182/188 |
Horizontally adjustable |
37 |
| 182/224 |
Scaffold horse beam or leg |
50 |
| 182/225 |
Relatively movable |
92 |
| 182/226 |
Beam clamped by pivoting leg |
21 |
| 182/227 |
With intermediate staff |
8 |
| 182/128 |
Scaffold supported internally on shaft |
62 |
| 182/179.1 |
Self-sustaining |
55 |
| 182/186.7 |
Connector for horizontal or diagonal brace |
33 |
| 182/186.8 |
Releasable connector |
70 |
| 182/186.9 |
Having cantilivered auxillary platform |
9 |
| 182/186.6 |
Having height adjustable platform |
38 |
| 182/180.1 |
Ladder |
22 |
| 182/180.2 |
Having supporting base |
10 |
| 182/180.3 |
Vertically pivoted to supporting base |
4 |
| 182/181.1 |
Scaffold horse (e.g., trestle) |
93 |
| 182/186.1 |
Beam clamped by leg actuation |
19 |
| 182/186.2 |
Pivotally connected legs |
10 |
| 182/182.1 |
Having height adjustable beam |
19 |
| 182/182.2 |
By extensible leg brace |
7 |
| 182/182.3 |
Step-by-step adjustment |
9 |
| 182/182.5 |
By extensible leg |
31 |
| 182/182.4 |
By slidable leg |
32 |
| 182/186.3 |
Having leg to beam attaching bracket |
36 |
| 182/183.1 |
Having longitudinally extensible beam |
9 |
| 182/185.1 |
Having unitary leg to beam coupler and brace |
11 |
| 182/186.5 |
Knockdown |
31 |
| 182/186.4 |
Leg coupled directly to beam |
14 |
| 182/189 |
Single stile, strand or pole |
61 |
| 182/190 |
Flexible |
27 |
| 182/191 |
With sliding carrier |
31 |
| 182/192 |
Load-responsive brake |
44 |
| 182/193 |
Occupant-actuated brake |
56 |
| 182/178.1 |
Stackable |
58 |
| 182/178.2 |
Ladder section |
16 |
| 182/178.3 |
Male and female connecting means |
14 |
| 182/178.4 |
Overlapping sections |
4 |
| 182/178.5 |
Male and female connecting means |
28 |
| 182/178.6 |
Double-ended pin |
13 |
| 182/150 |
Suspended platform |
213 |
| 182/3 |
Torso harness |
399 |
| 182/231 |
Attached to strand wound on reel, and means for retarding unwinding of strand |
47 |
| 182/233 |
Fluid resistance brake |
28 |
| 182/235 |
Friction brake and occupant-operated mechanism for applying brake during descent |
17 |
| 182/232 |
Including spring for rewinding strand |
11 |
| 182/234 |
Movable, friction brake element applied by centrifugal force |
38 |
| 182/8 |
Ladder-associated |
48 |
| 182/5 |
Strand-engaging, with descent retarder |
188 |
| 182/6 |
Leg or loop type |
57 |
| 182/7 |
With seat |
67 |
| 182/4 |
Window washer type |
12 |
| 182/9 |
With pole encircling or grasping means |
51 |
| 182/36 |
Traversing, track-mounted |
139 |
| 182/39 |
Ground- or floor-engaging |
17 |
| 182/37 |
With occupant elevating or lowering means |
43 |
| 182/38 |
With vertically spaced second track |
23 |
| 182/152 |
Unitary foldable, rigid scaffold or ladder |
110 |
| 182/156 |
Collapsible ladder |
43 |
| 182/163 |
Folding stile |
93 |
| 182/164 |
Rung-to-rung stile sections |
26 |
| 182/157 |
Lazy tong type |
6 |
| 182/158 |
Mechanical or power-extending means |
1 |
| 182/159 |
Parallel moving side, pivoted rung or step |
28 |
| 182/161 |
Plural element stile |
24 |
| 182/160 |
Storage providing component |
29 |
| 182/162 |
With collapsible prop |
14 |
| 182/153 |
Trestle |
107 |
| 182/154 |
Crossed leg |
9 |
| 182/155 |
Legs foldable parallel to beam axis in all planes |
55 |
| 182/40 |
Upwardly extensible flexible ladder or escape |
6 |
| 182/41 |
Self-rigidifying |
10 |
| 182/82 |
Wall- or floor-attached |
241 |
| 182/87 |
Embedded scaffold support member |
9 |
| 182/90 |
Independent rung or step |
76 |
| 182/91 |
Pivoted |
104 |
| 182/92 |
Readily detachable |
160 |
| 182/93 |
Ladder |
129 |
| 182/95 |
Folding, rigid components |
39 |
| 182/96 |
Parallelogram type |
42 |
| 182/97 |
Pivoted |
87 |
| 182/98 |
Normally counterbalanced to inoperative position |
10 |
| 182/94 |
Wall penetrating operating means |
3 |
| 182/99 |
With portion overhanging roof |
4 |
| 182/88 |
Retractable or collapsible beneath floor, track-mounted |
68 |
| 182/100 |
Single pole or strand |
83 |
| 182/89 |
Spring-biased pivoted step or ladder |
19 |
| 182/83 |
Wall-mounted platform, with ladder |
13 |
| 182/85 |
Movable ladder |
10 |
| 182/86 |
Pivoted |
31 |
| 182/84 |
Movable platform with movable ladder |
40 |
| 182/62.5 |
With extensible vertical and nonvertical sections |
27 |
| 182/51 |
With fluid handling |
11 |
| 182/52 |
Conduit is support |
2 |
| 182/106 |
With handrail or guard for ladder |
155 |
| 182/18 |
With indicator, signal or alarm |
106 |
| 182/46 |
With insulation |
93 |
| 182/47 |
Fire or heat shield |
37 |
| 182/50 |
With projector or projectile |
5 |
| 182/70 |
With storage device for supple escape |
78 |
| 182/71 |
Occupant weight-actuated descent device |
25 |
| 182/72 |
Occupant-controlled descent retarder |
25 |
| 182/73 |
Reel |
16 |
| 182/74 |
Escape of ladder type lowers upon release of latch |
4 |
| 182/75 |
With retarder or brake on reel |
4 |
| 182/236 |
With means for retarding unwinding of strand type escape |
43 |
| 182/238 |
Fluid resistance brake |
34 |
| 182/240 |
Friction brake and occupant-operated mechanism for applying brake during descent |
11 |
| 182/237 |
Including spring for rewinding strand |
13 |
| 182/239 |
Movable, friction brake element applied by centrifugal force |
43 |
| 182/76 |
Wall-embedded |
18 |
| 182/114 |
With sucker rod support |
4 |
